| interspecific variation in anthocyanins, phenolics, and antioxidant capacity among genotypes of highbush and lowbush blueberries (vaccinium section cyanococcus spp.). | recent interest in the possible protective effects of dietary antioxidant compounds against human degenerative disease has prompted investigation of foods such as blueberries (vaccinium sp.), which have a high antioxidant capacity. fruit obtained from genotypes of highbush blueberries (vaccinium corymbosum l.) and lowbush blueberries (vaccinium angustifolium aiton) were analyzed for their antioxidant capacity, their content of anthocyanins, and total phenolic compounds, to evaluate the intraspec ... | 2001 | 11600018 |
| effective separation of potent antiproliferation and antiadhesion components from wild blueberry (vaccinium angustifolium ait.) fruits. | extracts from wild blueberry (vaccinium angustifolium ait.) were separated into proanthocyanidin-rich fractions using liquid vacuum and open column chromatography on toyopearl and sephadex lh-20, respectively. fractions were characterized using analytical tools including mass spectrometry and nmr spectroscopy; fraction composition was correlated with bioactivity using antiproliferation and antiadhesion in vitro assays. there was a significant positive correlation between proanthocyanidin content ... | 2004 | 15479003 |
| decreasing photosynthesis at different spatial scales during the late growing season on a boreal cutover. | the relationship between photosynthesis and accumulated cold degree days (cdd) over the late growing season was examined at the shoot, ecosystem and landscape scales in a boreal cutover in eastern canada predominated by black spruce (picea mariana mill. bsp), lowbush blueberry (vaccinium angustifolium ait.) and sheep laurel (kalmia angustifolia l.). we calculated cdd as the sum of minimum daily temperatures below a 5 degrees c threshold. light-saturated photosynthesis at the shoot level (a(max)) ... | 2005 | 15805089 |
| the effect of dietary supplementation with blueberry, alpha-tocopherol or astaxanthin on oxidative stability of arctic char (salvelinus alpinus) semen. | the objective was to determine the oxidative stability of arctic char (salvelinus alpinus) semen following dietary supplementation with lowbush blueberry (vaccinium angustifolium) product, alpha-tocopherol, alpha-tocopherol+blueberry product, or alpha-tocopherol+astaxanthin. sperm lipid peroxidation was initiated by challenging with ferrous sulphate/ascorbic acid (fe(++)/asc) at level of 0.04/0.2 mmol/l. addition of blueberry, alpha-tocopherol, or both to char diets inhibited semen lipid peroxid ... | 2006 | 16420960 |
| a comparison of single oxidants versus advanced oxidation processes as chlorine-alternatives for wild blueberry processing (vaccinium angustifolium). | advanced oxidation processes and single chemical oxidants were evaluated for their antimicrobial efficacy against common spoilage bacteria isolated from lowbush blueberries. predominant bacterial flora were identified using biochemical testing with the assessment of relative abundance using non-selective and differential media. single chemical oxidants evaluated for postharvest processing of lowbush blueberries included 1% hydrogen peroxide, 100 ppm chlorine, and 1 ppm aqueous ozone while advanc ... | 2007 | 17350128 |
| microbial degradation of phosmet on blueberry fruit and in aqueous systems by indigenous bacterial flora on lowbush blueberries (vaccinium angustifolium). | phosmet-adapted bacteria isolated from lowbush blueberries (vaccinium angustifolium) were evaluated for their ability to degrade phosmet on blueberry fruit and in minimal salt solutions. microbial metabolism of phosmet by isolates of enterobacter agglomerans and pseudomonas fluorescens resulted in significant reductions (p < 0.05; 33.8%) in phosmet residues on blueberry fruit. degradation was accompanied by microbial proliferation of phosmet-adapted bacteria. preferential utilization of phosmet ... | 2007 | 17995608 |
| hypoglycemic activity of a novel anthocyanin-rich formulation from lowbush blueberry, vaccinium angustifolium aiton. | blueberry fruits are known as a rich source of anthocyanin components. in this study we demonstrate that anthocyanins from blueberry have the potency to alleviate symptoms of hyperglycemia in diabetic c57b1/6j mice. the anti-diabetic activity of different anthocyanin-related extracts was evaluated using the pharmaceutically acceptable self-microemulsifying drug delivery system: labrasol. treatment by gavage (500 mg/kg body wt) with a phenolic-rich extract and an anthocyanin-enriched fraction for ... | 2009 | 19303751 |
| improvement of lymphocyte resistance against h(2)o(2)-induced dna damage in sprague-dawley rats after eight weeks of a wild blueberry (vaccinium angustifolium)-enriched diet. | the effect of wild-blueberry consumption on the resistance of h(2)o(2)-induced dna damage was evaluated in the sprague-dawley (sd) rat. thirty-two, four week-old sd rats were randomly assigned to two groups of sixteen rats each and fed a control diet (c) or a wild-blueberry (wb) diet for four or eight weeks. following the dietary treatment, plasma antioxidant capacity was assessed by the trap assay. ex vivo protection from h(2)o(2)-induced dna damage was evaluated in lymphocytes by means of the ... | 2010 | 20800697 |
| a wild blueberry-enriched diet (vaccinium angustifolium) improves vascular tone in the adult spontaneously hypertensive rat. | the effect of a wild blueberry-enriched diet on vasoconstriction and vasorelaxation was examined in the adult, 20-week-old spontaneously hypertensive rat (shr) after 8 weeks of a control (c) or an 8% wild blueberry (wb) diet. nitric oxide (no)- and cyclooxygenase (cox)-mediated aortic responses were examined ex vivo with the agonists l-phenylephrine (phe) and acetylcholine (ach), in the absence or presence of the no synthase (nos) inhibitor l-ng-monomethyl arginine (l-nmma) or the cox inhibitor ... | 2010 | 20964405 |
| ecological impacts of the n-viro biosolids land-application for wild blueberry (vaccinium angustifolium. ait) production in nova scotia. | land application of biosolids from processed sewage sludge may deteriorate soil, water, and plants. we investigated the impact of the n-viro biosolids land-application on the quality of the soil water that moved through orthic humo-ferric podzols soil of nova scotia (ns) at the wild blueberry research institute, debert, ns canada. in addition, the response of major soilproperties and crop yield was also studied. wild blueberry (vaccinium angustifolium. ait) was grown under irrigated and rainfed ... | 2011 | 21547825 |
| the antimicrobial properties of the lowbush blueberry (vaccinium angustifolium) fractional components against foodborne pathogens and the conservation of probiotic lactobacillus rhamnosus. | the antimicrobial properties of lowbush blueberry (vaccinium angustifolium) were studied against escherichia coli o157:h7, listeria monocytogenes, salmonella typhimurium, and lactobacillus rhamnosus to determine which fractional components have antimicrobial effects and which microorganisms are most susceptible to these antimicrobial properties. lowbush blueberry extract (f1) was separated using a c-18 sep-pak cartridge into monomeric phenolics (f2) and anthocyanins plus proanthocyanidins (f3). ... | 2012 | 22265292 |
| the temporal effect of a wild blueberry (vaccinium angustifolium)-enriched diet on vasomotor tone in the sprague-dawley rat. | background and aims: we have previously reported that wild blueberry (vaccinium angustifolium)-enriched diets (wb) attenuate aortic adrenergic response through endothelial-mediated pathways. the duration of dietary intervention necessary to induce the positive changes on vasomotor tone has not been studied to date. thus, our objective was to investigate the temporal effect of wb consumption on vascular function and reactivity in sprague-dawley (sd) rat aorta after 4 and 7 weeks of dietary treatm ... | 2010 | 20709513 |
| anthocyanin absorption, metabolism, and distribution from a wild blueberry-enriched diet (vaccinium angustifolium) is affected by diet duration in the sprague-dawley rat. | the effect of wild blueberry consumption on anthocyanin (acns) distribution and metabolism in sprague-dawley (sd) rats was investigated. thirty-two rats were fed for 4 or 8 weeks with a control (c) or a wild blueberry-enriched diet (8%) (wb). anthocyanin profile in plasma, urine, feces, brain, and liver was evaluated by lc-ms/ms, and significantly increased in urine and not in feces after 8 weeks on the wb diet compared to that in 4 weeks, but no anthocyanins were detected in plasma, liver, and ... | 2010 | 20030330 |
| dietary enrichment with wild blueberries (vaccinium angustifolium) affects the vascular reactivity in the aorta of young spontaneously hypertensive rats. | we have previously reported on the positive effects of wild blueberries on arterial contractile response to alpha(1) adrenergic stimuli and on endothelium-mediated vasorelaxation. our present study was designed to evaluate the effects of the dietary enrichment with wild blueberries on aortic function and reactivity in the developmental phase of essential hypertension in spontaneously hypertensive rats (shr). we investigated the possible influence blueberries may have on the acetylcholine (ach)-i ... | 2010 | 19157824 |
| seasonal phytochemical variation of anti-glycation principles in lowbush blueberry (vaccinium angustifolium). | diabetic hyperglycaemia promotes the production of advanced glycation end-products (ages), which play a significant role in the development of complications associated with type 2 diabetes mellitus. vaccinium angustifolium, a medicinal plant used for the treatment of diabetes, produces a variety of phenolic metabolites with putative anti-diabetic activities. to assess optimal cultivation time, seasonal changes in the concentration of six phenolic compounds in leaves and twelve compounds in stems ... | 2009 | 19085814 |
| effect of a polyphenol-rich wild blueberry extract on cognitive performance of mice, brain antioxidant markers and acetylcholinesterase activity. | the aim of this study was to examine the effect of a polyphenol-rich extract (prb) of vaccinium angustifolium (wild blueberries) introduced intraperitoneally (i.p.) at 30 (prb30) and 60 (prb60) mg/kg body weight for 7 days, on cognitive performance, brain oxidative status and acetylcholinesterase activity in adult, male, 3-4-month-old balb-c mice. evaluation of rodent learning and memory was assessed by a step-through test on day 6 after a double training and an initial acquisition trial on day ... | 2009 | 19056430 |
| fermented canadian lowbush blueberry juice stimulates glucose uptake and amp-activated protein kinase in insulin-sensitive cultured muscle cells and adipocytes. | extracts of the canadian lowbush blueberry (vaccinium angustifolium ait.) have recently been demonstrated to possess significant antidiabetic potential, in accordance with the traditional use of this plant as an antidiabetic natural health product. fermentation of blueberry juice with the serratia vaccinii bacterium is known to modify the phenolic content and increase antioxidant activity. the present study evaluated the effects of fermented blueberry juice on glucose uptake, adipogenesis, and t ... | 2007 | 18066143 |
| flight activity of usda-ars russian honey bees (hymenoptera: apidae) during pollination of lowbush blueberries in maine. | flight activity was compared in colonies of russian honey bees, apis mellifera l. (hymenoptera: apidae), and italian bees during commercial pollination of lowbush blueberries (principally vaccinium angustifolium aiton) in washington co., me, in late may and early june in 2003 and 2004. colonies of the two stocks were managed equally in louisiana during autumn through early spring preceding observations in late spring each year. resulting average populations of adult bees and of brood were simila ... | 2007 | 17461046 |
| commercial bumble bee bombus impatiens (hymenoptera: apidae) as a pollinator in lowbush blueberry (ericale: ericaceae) fields. | here, we evaluate the potential of the bumble bee bombus impatiens cresson, obtained from commercial colonies, as a pollen vector for lowbush blueberry, vaccinium augustifolium aiton. we wanted to gain insight into the relationships between pollination by introduced bumble bees, the categories of seeds produced, and the weight and the maturity of the blueberries. the effect of b. impatiens foraging in blueberry stands was measured quantitatively through fruit set and seed set analysis. we create ... | 2006 | 16686145 |
| erratum to: bearing fruit: flower removal reveals the trade-offs associated with high reproductive effort for lowbush blueberry. | | 2017 | 28825112 |
| blueberry flavonoids inhibit matrix metalloproteinase activity in du145 human prostate cancer cells. | regulation of the matrix metalloproteinases (mmps), the major mediators of extracellular matrix (ecm) degradation, is crucial to regulate ecm proteolysis, which is important in metastasis. this study examined the effects of 3 flavonoid-enriched fractions (a crude fraction, an anthocyanin-enriched fraction, and a proanthocyanidin-enriched fraction), which were prepared from lowbush blueberries (vaccinium angustifolium), on mmp activity in du145 human prostate cancer cells in vitro. using gelatin ... | 2005 | 16234852 |
| inhibition of matrix metalloproteinase activity in du145 human prostate cancer cells by flavonoids from lowbush blueberry (vaccinium angustifolium): possible roles for protein kinase c and mitogen-activated protein-kinase-mediated events. | regulation of the matrix metalloproteinases (mmps) is crucial to regulate extracellular matrix (ecm) proteolysis which is important in metastasis. this study investigated the mechanism(s) by which three flavonoid-enriched fractions from lowbush blueberry (vaccinium angustifolium) down-regulate mmp activity in du145 human prostate cancer cells. metalloproteinase activity was evaluated from cells exposed to "crude," anthocyanin-enriched (an) and proanthocyanidin-enriched (pac) fractions. different ... | 2006 | 16111875 |
| wild blueberry (vaccinium angustifolium) consumption affects the composition and structure of glycosaminoglycans in sprague-dawley rat aorta. | it has been documented that increased intake of polyphenols may provide protection against coronary heart disease and stroke. blueberries (vaccinium angustifolium) are one of the richest sources of antioxidants among fruits and vegetables. phenolic compounds from berry extracts inhibit human low density lipoprotein and liposome oxidation. glycosaminoglycans (gags) and proteoglycans (pgs) are structural components of aortas with great structural diversity. their interaction with compounds such as ... | 2006 | 16111874 |
| vaccinium angustifolium root extract suppresses fcɛri expression in human basophilic ku812f cells. | vaccinium angustifolium, commonly known as the lowbush blueberry, is a rich source of flavonoids, with which various human physiological activities have been associated. the present study focuses on the investigation of the effect of the methanolic extract of v. angustifolium root extract (vae) on high affinity immunoglobulin e receptor (fcɛri) α chain antibody (cra-1)-induced allergic reaction in human basophilic ku812f cells. the total phenolic content of vae was found to be 170±1.9 mg gallic ... | 2017 | 28401082 |
| feeding rats diets enriched in lowbush blueberries for six weeks decreases ischemia-induced brain damage. | oxidative stress is an important element in the etiology of ischemic stroke. lowbush blueberries (vaccinium angustifolium aiton) have a high antioxidant capacity and thus we determined whether consumption of lowbush blueberries would protect neurons from stroke-induced damage. rats were fed ain-93g diets containing 0 or 14.3% blueberries (g fresh weight/100 g feed) for 6 weeks. stroke was then simulated by ligation of the left common carotid artery (ischemia), followed by hypoxia. one week later ... | 2002 | 12509072 |
| the effect of wild blueberry (vaccinium angustifolium) consumption on postprandial serum antioxidant status in human subjects. | the aim of the present study was to determine whether the consumption of wild blueberries (vaccinium angustifolium), a concentrated source of non-nutritive antioxidant phytochemicals, would enhance postprandial serum antioxidant status in healthy human subjects. a single-blinded crossover study was performed in a group of eight middle-aged male subjects (38-54 years). subjects consumed a high-fat meal and a control supplement followed 1 week later by the same high-fat meal supplemented with 100. ... | 2002 | 12323088 |
| fermented blueberry juice extract and its specific fractions have an anti-adipogenic effect in 3 t3-l1 cells. | obesity and type 2 diabetes have reached epidemic status worldwide. wild lowbush blueberry (vaccinium angustifolium aiton) is a plant of the north american aboriginal traditional pharmacopeia with antidiabetic potential, especially when it is fermented with serratia vaccinii. | 2017 | 28056918 |
| predator- and scavenger-mediated ecosystem services determined by distance to field-forest interface in the maine lowbush blueberry agroecosystem. | predators and scavengers play a vital role in regulating insect pests, weeds, and vertebrate scat in perennial agroecosystems. understanding how farm management practices and surrounding habitat influence these beneficial ecosystem services contributes to our understanding of these complex ecological systems and guides future management decisions. in a mensurative 2-yr study, we determined how different pest management strategies and surrounding forest composition influenced levels of sentinel i ... | 2016 | 27436844 |
| different effects of anthocyanins and phenolic acids from wild blueberry (vaccinium angustifolium) on monocytes adhesion to endothelial cells in a tnf-α stimulated proinflammatory environment. | monocyte adhesion to the vascular endothelium is a crucial step in the early stages of atherogenesis. this study aims to investigate the capacity of an anthocyanin (acn) and phenolic acid (pa) rich fraction (rf) of a wild blueberry, single acns (cyanidin, malvidin, delphinidin) and related metabolites (protocatechuic, syringic, and gallic acid) to counteract monocytes (thp-1) adhesion to human umbilical vein endothelial cells (huvecs) in a tumor necrosis factor α (tnf-α) mediated proinflammatory ... | 2016 | 27324255 |
| an efficient method for high-purity anthocyanin isomers isolation from wild blueberries and their radical scavenging activity. | an efficient process for the purification of anthocyanin monomeric isomers from wild blueberries of lake saint-jean region (quebec, canada) was developed and easy scalable at industrial purpose. the blueberries were soaked in acidified ethanol, filtered, and the filtrate was cleaned by solid phase extraction using silica gel c-18 and dsc-scx cation-exchange resin. anthocyanin-enriched elutes (87 wt.%) were successfully fractionated by preparative liquid chromatography. the major anthocyanins mon ... | 2016 | 26675861 |
| bombus impatiens (hymenoptera: apidae): an alternative to apis mellifera (hymenoptera: apidae) for lowbush blueberry pollination. | the pollination effectiveness of the commercially reared bumble bee bombus impatiens cresson, was compared in field studies to the honey bee, apis mellifera l., for lowbush blueberry, vaccinium angustifolium ait. a preliminary study indicated that b. impatiens had potential as an alternative pollinator. in a 3-yr study, percentage fruit set, percentage harvested berries, berry weight, and seeds per berry were compared in blueberry fields stocked at 7.5 a. mellifera hives per hectare to 5, 7.5, o ... | 2001 | 11425013 |
| suppression of escherichia coli o157:h7 by dung beetles (coleoptera: scarabaeidae) using the lowbush blueberry agroecosystem as a model system. | wildlife as a source of microbial contamination is a food safety concern. deer feces (scat) have been determined as a point source for escherichia coli o157:h7 contamination of fresh produce. the ecological role of the scooped scarab (onthophagus hecate (panzer)), a generalist dung beetle species common in maine blueberry fields, was explored as a biological control agent and alternatively as a pathogen vector between deer scat and food. a large-scale field survey of wildlife scat indicated that ... | 2015 | 25849430 |
| impact of procyanidins from different berries on caspase 8 activation in colon cancer. | the aim of this work is to identify which proapoptotic pathway is induced in human colon cancer cell lines, in contact with proanthocyanidins extracted from various berries. | 2015 | 26180579 |
| the influence of insecticides and vegetation in structuring formica mound ant communities (hymenoptera: formicidae) in maine lowbush blueberry. | assessing the influence of new, reduced-risk insecticides on natural enemies within agroecosystems is essential to developing integrated pest management strategies. three species of mound-building formica ants are abundant throughout maine lowbush blueberry fields (formica exsectoides forel, f. glacialis wheeler, and f. ulkei emery). all three species have been described in the literature as predaceous, with research demonstrating that f. exsectoides preys on major pest insects of lowbush bluebe ... | 2013 | 23786059 |
| antioxidant capacity, vitamin c, phenolics, and anthocyanins after fresh storage of small fruits. | fresh strawberries (fragaria x ananassa duch.), raspberries (rubus idaeus michx.), highbush blueberries (vaccinium corymbosum l.), and lowbush blueberries (vaccinium angustifolium aiton) were stored at 0, 10, 20, and 30 degrees c for up to 8 days to determine the effects of storage temperature on whole fruit antioxidant capacity (as measured by the oxygen radical absorbing capacity assay, cao et al., clin. chem. 1995, 41, 1738-1744) and total phenolic, anthocyanin, and ascorbate content. the fou ... | 1999 | 10552863 |
| anthocyanins and phenolic acids from a wild blueberry (vaccinium angustifolium) powder counteract lipid accumulation in thp-1-derived macrophages. | blueberries are a rich source of anthocyanins (acns) and phenolic acids (pa), which are hypothesized to protect against development of atherosclerosis. the present study examined the effect of an acn- and pa-rich fractions, obtained from a wild blueberry powder, on the capacity to counteract lipid accumulation in macrophages derived from monocytic thp-1 cells. in addition, we tested the capacity of pure acns and their metabolites to alter lipid accumulation. | 2016 | 25595100 |
| functionality of varroa-resistant honey bees (hymenoptera: apidae) when used in migratory beekeeping for crop pollination. | two types of honey bees, apis mellifera l. (hymenoptera: apidae), bred for resistance to varroa destructor anderson & trueman were evaluated for performance when used in migratory crop pollination. colonies of russian honey bees (rhb) and outcrossed bees with varroa-sensitive hygiene (vsh) were managed without miticide treatments and compared with colonies of italian honey bees that served as controls. control colonies were managed as groups which either were treated twice each year against v. d ... | 2012 | 22606798 |
| pollen loads and specificity of native pollinators of lowbush blueberry. | the reproduction of lowbush blueberry (vaccinium angustifolium aiton) is closely tied to insect pollination, owing to self-incompatibility. many species are known to have greater pollination efficiency than the introduced apis mellifera l., commonly used for commercial purposes. in this study, we measured the pollen loads of several antophilous insect species, mostly apoidea and syrphidae, present in four lowbush blueberry fields in lac-st-jean, québec. to measure pollen loads and species specif ... | 2014 | 25026677 |
| abundance and diversity of wild bees (hymenoptera: apoidea) found in lowbush blueberry growing regions of downeast maine. | insect-mediated pollination is critical for lowbush blueberry (ericaceae: vaccinium angustifolium aiton) fruit development. past research shows a persistent presence of wild bees (hymenoptera: apoidea) providing pollination services even when commercial pollinators are present. we undertook the study to 1) provide a description of bee communities found in lowbush blueberry-growing regions, 2) identify field characteristics or farm management practices that influence those communities, 3) identif ... | 2015 | 26314043 |
| pollination reservoirs in lowbush blueberry (ericales: ericaceae). | pollinator-dependent agriculture heavily relies upon a single pollinator-the honey bee. to diversify pollination strategies, growers are turning to alternatives. densely planted reservoirs of pollen- and nectar-rich flowers (pollination reservoirs, hereafter "prs") may improve pollination services provided by wild bees. our focal agroecosystem, lowbush blueberry (vaccinium angustifolium aiton), exists in a simple landscape uniquely positioned to benefit from prs. first, we contrast bee visitatio ... | 2017 | 28069631 |
| high-throughput screening for anti-influenza a virus drugs and study of the mechanism of procyanidin on influenza a virus-induced autophagy. | in this research, we have established a high-throughput screening (hts) platform based on the influenza a virus (iav) vrna promoter. using this hts platform, we selected 35 medicinal plants out of 83 examples of traditional chinese medicine and found that 7 examples had not been reported. after examining many previous reports, we found that vaccinium angustifolium ait., vitis vinifera l, and cinnamomum cassia presl had a common active compound, procyanidin, and then determined the anti-iav effec ... | 2012 | 22286278 |
| wild blueberry (vaccinium angustifolium ait.) polyphenols target fusobacterium nucleatum and the host inflammatory response: potential innovative molecules for treating periodontal diseases. | blueberries contain significant amounts of flavonoids to which a number of beneficial health effects in humans have been associated. the present study investigated the effect of a polyphenol-rich lowbush blueberry (vaccinium angustifolium ait.) extract on the two main etiologic components of periodontitis, a multifactorial disorder affecting the supporting structures of the teeth. phenolic acids, flavonoids (flavonols, anthocyanins, flavan-3-ols), and procyanidins made up 16.6, 12.9, and 2.7% of ... | 2015 | 26207764 |
| comparative analysis of phenolic content and profile, antioxidant capacity, and anti-inflammatory bioactivity in wild alaskan and commercial vaccinium berries. | wild alaskan vaccinium berries, v. vitis-idaea (lowbush cranberry) and v. uliginosum (bog blueberry), were investigated in parallel with their commercial berry counterparts, v. macrocarpon (cranberry) and v. angustifolium (lowbush blueberry). lowbush cranberry accumulated about twice the total phenolics (624.4 mg/100 g fw) and proanthocyanidins (278.8 mg/100 g) content as commercial cranberries, but a-type proanthocyanidins were more prevalent in the latter. bog blueberry anthocyanin and total p ... | 2014 | 24219831 |
| six-week consumption of a wild blueberry powder drink increases bifidobacteria in the human gut. | wild blueberries are a rich source of polyphenols and other compounds that are highly metabolized by the intestinal microbiota and may, at the same time, affect the intestinal environment itself. a repeated-measure, crossover dietary intervention on human volunteers was designed to study the effect of six week consumption of a wild blueberry ( vaccinium angustifolium ) drink, versus a placebo drink, in modulating the intestinal microbiota. relative to total eubacteria, bifidobacterium spp. sig ... | 2011 | 22060186 |
| cell-line specific protection by berry polyphenols against hydrogen peroxide challenge and lack of effect on metabolism of amyloid precursor protein. | amyloid precursor protein (app) altered metabolism, aβ-overproduction/aggregation and oxidative stress are implicated in the development of alzheimer's disease pathology. based on our previous data indicating that administration of a polyphenol-rich (prb) blueberry extract (from wild vaccinium angustifolium) is memory enhancing in healthy mice and in order to delineate the neuroprotective mechanisms, this study investigated the antioxidant effects of prb in h(2) o(2) -induced oxidative damage, a ... | 2011 | 22086824 |
| differential iridoid production as revealed by a diversity panel of 84 cultivated and wild blueberry species. | cultivated blueberry (vaccinium corymbosum, vaccinium angustifolium, vaccinium darrowii, and vaccinium virgatum) is an economically important fruit crop native to north america and a member of the ericaceae family. several species in the ericaceae family including cranberry, lignonberry, bilberry, and neotropical blueberry species have been shown to produce iridoids, a class of pharmacologically important compounds present in over 15 plant families demonstrated to have a wide range of biological ... | 0 | 28609455 |
| crowdcurio: an online crowdsourcing platform to facilitate climate change studies using herbarium specimens. | phenology is a key aspect of plant success. recent research has demonstrated that herbarium specimens can provide important information on plant phenology. massive digitization efforts have the potential to greatly expand herbarium-based phenological research, but also pose a serious challenge regarding efficient data collection. here, we introduce crowdcurio, a crowdsourcing tool for the collection of phenological data from herbarium specimens. we test its utility by having workers collect phen ... | 0 | 28394023 |
| epoxynemanione a, nemanifuranones a-f, and nemanilactones a-c, from nemania serpens, an endophytic fungus isolated from riesling grapevines. | ten polyketide specialized metabolites, epoxynemanione a, nemanifuranones a-f, and nemanilactones a-c, were isolated from the culture filtrate of nemania serpens (pers.) grey (1821), an endophytic fungus from a riesling grapevine (vitis vinifera) found in canada's niagara region. additionally, four known metabolites 2-(hydroxymethyl)-3-methoxy-benzoic acid, phyllostine, 5-methylmellein and a nordammarane triterpenoid were isolated. a related known metabolite 2,3-dihydro-2-hydroxy-2,4-dimethyl-5- ... | 2017 | 28441516 |
| economic risk of bee pollination in maine wild blueberry, vaccinium angustifolium. | recent pollinator declines highlight the importance of evaluating economic risk of agricultural systems heavily dependent on rented honey bees or native pollinators. our study analyzed variability of native bees and honey bees, and the risks these pose to profitability of maine's wild blueberry industry. we used cross-sectional data from organic, low-, medium-, and high-input wild blueberry producers in 1993, 1997-1998, 2005-2007, and from 2011 to 2015 (n = 162 fields). data included native and ... | 2017 | 28981673 |
| profiling of iridoid glycosides in vaccinium species by uhplc-ms. | the iridoid profile of four vaccinium species was investigated using uhplc-ms to obtain further information about this group of species for phytochemical characterization. fruits of bog bilberry (vaccinium uliginosum l.) showed 14 different iridoid glycosides with a total amount of 20mg/kg fresh weight (fw), whereas bilberry (vaccinium myrtillus l.) contained 11 iridoid glycosides and a total amount of 127mg/kg fw. highbush blueberry (vaccinium corymbosum l.) and lowbush blueberry (vaccinium ang ... | 2017 | 28964369 |
| wild blueberry (vaccinium angustifolium) consumption improves inflammatory status in the obese zucker rat model of the metabolic syndrome. | the metabolic syndrome (mets) is a major public health problem in the united states. chronic inflammation is a critical component of the mets, leading to dramatically increased risk of type ii diabetes and cardiovascular disease. this study investigates the ability of a wild-blueberry-enriched diet to improve the proinflammatory status associated with mets in the obese zucker rat (ozr). circulating levels of key inflammatory markers and their expression in the liver and abdominal adipose tissue ... | 2013 | 23465589 |
| flower power: floral and resource manipulations reveal how and why reproductive trade-offs occur for lowbush blueberry (vaccinium angustifolium). | plant reproductive trade-offs are thought to be caused by resource limitations or other constraints, but more empirical support for these hypotheses would be welcome. additionally, quantitative characterization of these trade-offs, as well as consideration of whether they are linear, could yield additional insights. we expanded our flower removal research on lowbush blueberry (vaccinium angustifolium) to explore the nature of and causes of its reproductive trade-offs. we used fertilization, defo ... | 2017 | 28808544 |
| bearing fruit: flower removal reveals the trade-offs associated with high reproductive effort for lowbush blueberry. | past studies have shown that taxa from disparate groups often respond similarly to reduced reproductive effort. these common responses imply that high reproductive effort trades off with a consistent set of other life functions for most angiosperms, albeit modulated by their growth form and life history. however, many questions remain about reproductive trade-offs in plants, including just how many other life functions they involve, how diverse these functions may be, and how the severity of the ... | 2017 | 28730344 |
| harvest date and storage effect on fruit size, phenolic content and antioxidant capacity of wild blueberries of nw ontario, canada. | blueberries are eaten fresh or after storing at room temperature, refrigerator or freezer but little is known about changes in food values of wild blueberries due to harvest dates and storage conditions. the aim of this study was to investigate the effect of harvest date and storage conditions of wild blueberries on berry quality and health related chemistry. we analyzed vaccinium angustifolium, v. angustifolium var. nigrum, and v. myrtilloides native to nw ontario, canada harvested early and la ... | 2017 | 28559614 |
| protein-bound vaccinium fruit polyphenols decrease ige binding to peanut allergens and rbl-2h3 mast cell degranulation in vitro. | peanut allergy is a worldwide health concern. in this study, the natural binding properties of plant-derived polyphenols to proteins was leveraged to produce stable protein-polyphenol complexes comprised of peanut proteins and cranberry (vaccinium macrocarpon ait.) or lowbush blueberry (vaccinium angustifolium ait.) pomace polyphenols. protein-bound and free polyphenols were characterized and quantified by multistep extraction of polyphenols from protein-polyphenol complexes. immunoblotting was ... | 2017 | 28294257 |
| ant diversity and distribution (hymenoptera: formicidae) throughout maine lowbush blueberry fields in hancock and washington counties. | a 6-yr survey (2003-2008) identifying the ant fauna present in maine lowbush blueberry fields was conducted in washington and hancock counties. pitfall trapping, leaf litter, and hand collections, as well as protein and sugar baits were used to characterize the resident ant community in this habitat. estimates of faunal richness as impacted by the blueberry crop stage (pruned or fruit-bearing), methods of pest management (grower standard, reduced-risk, or organic), and location within fields (mi ... | 2012 | 22506993 |
| flavonoid metabolites in human urine during blueberry anthocyanin intake. | the human health benefits of anthocyanins (anc) and other flavonoids are widely recognized. however, the flavonoid-based urinary metabolites arising in vivo after anc intake are not well described. human (n = 17) urine was collected while blueberry juice (bj) was consumed daily for 28 days and once after a 7 day washout. ms/ms scanning of 664 urine samples for 18 parent anc (panc) and 42 predicted anc metabolites (ancm) yielded 371 products (i.e., ms/ms × retention time (rt)). flavonoid-based an ... | 2017 | 28150498 |
| ecological gradients driving the distribution of four ericaceae in boreal quebec, canada. | understory species play a significant role in forest ecosystem dynamics. as such, species of the ericaceae family have a major effect on the regeneration of tree species in boreal ecosystems. it is thus imperative to understand the ecological gradients controlling their distribution and abundance, so that their impacts can be taken into account in sustainable forest management. using innovative analytical techniques from landscape ecology, we aimed to position, along ecological gradients, four e ... | 2015 | 26140200 |
| complex formation of blueberry (vaccinium angustifolium) anthocyanins during freeze-drying and its influence on their biological activity. | biological activity of polyphenols is influenced by their uptake and is highly influenced by their interactions with the food matrix. this study evaluated the complex formation of blueberry polyphenols with fruit matrixes such as pectin and cellulose and their effect on the biological and antiproliferative properties of human colon cell lines ht-29 and crl 1790. free or complexed polyphenols were isolated by dialyzing aqueous or methanolic blueberry homogenates. seven phenolic compounds and thir ... | 2015 | 25727778 |
| leaf and flower blight caused by monilinia vaccinii-corymbosi on lowbush blueberry: effects on yield and relationship to bud phenology. | abstract naturally established lowbush blueberry clones in four fields were evaluated for the incidence of leaf and flower blight, proportion of mummy berries, and yield reductions caused by monilinia vacciniicorymbosi. the relationship between the phenology of flower and leaf bud development and susceptibility also was examined. three fields were examined over one crop year and one field was studied in two subsequent crop years. the incidence of stems with blight was correlated to incidence of ... | 2005 | 18943470 |
| phenolic acids of the two major blueberry species in the us market and their antioxidant and anti-inflammatory activities. | highbush (cultivated) and lowbush (wild) are the two major blueberry species in the us market. eight phenolic acids were detected and quantified from these two species by hplc-ms. chlorogenic acid was found to be the predominant phenolic acid in both species, with 0.44 mg/g fresh weight in lowbush blueberries and 0.13 mg/g fresh weight in highbush blueberries. total phenolic content in lowbush blueberries is over three times higher than that of highbush blueberries. the phenolic acid mixtures re ... | 2015 | 25535004 |
| stability and biological activity of wild blueberry (vaccinium angustifolium) polyphenols during simulated in vitro gastrointestinal digestion. | wild blueberries are rich in polyphenols and have several potential health benefits. understanding the factors that affect the bioaccessibility and bioavailability of polyphenols is important for evaluating their biological significance and efficacy as functional food ingredients. since the bioavailability of polyphenols such as anthocyanins is generally low, it has been proposed that metabolites resulting during colonic fermentation may be the components that exert health benefits. in this stud ... | 2014 | 25038707 |
| a single hplc-pad-apci/ms method for the quantitative comparison of phenolic compounds found in leaf, stem, root and fruit extracts of vaccinium angustifolium. | a method was developed for the analysis of vaccinium angustifolium ait. (lowbush blueberry), which is a widely used natural health product, particularly for the treatment of diabetic symptoms. while the anthocyanin content of the fruit has been well characterized, the chemistry of the vegetative parts used in supportive therapy for diabetes has been largely ignored. using a metabolomics-based approach for compound identification with an emphasis on phenolic metabolites, a single hplc-pad-apci/ m ... | 2013 | 17439018 |
| evaluation of chemical and photochemical oxidation processes for degradation of phosmet on lowbush blueberries (vaccinium angustifolium). | chemical and photochemical oxidation processes were evaluated for their ability to degrade residual phosmet on lowbush blueberries and for their role in the conversion of phosmet to phosmet oxon--a toxic metabolite of phosmet. chemical processes included 1 ppm of aqueous ozone, 1% hydrogen peroxide, 100 ppm of chlorine, and uv, whereas photochemical processes included hydrogen peroxide/uv, chlorine/uv, and ozone/hydrogen peroxide/uv. phosmet applied as imidan 2.5ec under laboratory conditions re ... | 2006 | 17147453 |
| distinguishing vaccinium species by chemical fingerprinting based on nmr spectra, validated with spectra collected in different laboratories. | a method was developed to distinguish vaccinium species based on leaf extracts using nuclear magnetic resonance spectroscopy. reference spectra were measured on leaf extracts from several species, including lowbush blueberry (vaccinium angustifolium), oval leaf huckleberry (vaccinium ovalifolium), and cranberry (vaccinium macrocarpon). using principal component analysis, these leaf extracts were resolved in the scores plot. analysis of variance statistical tests demonstrated that the three group ... | 2014 | 24963620 |
| exobasidium maculosum, a new species causing leaf and fruit spots on blueberry in the southeastern usa and its relationship with other exobasidium spp. parasitic to blueberry and cranberry. | exobasidium leaf and fruit spot of blueberry (vaccinium section cyanococcus) is an emerging disease that has rapidly increased in prevalence throughout the southeastern usa. to determine whether this disease is caused by a new species of exobasidium, we studied the morphology and phylogenetic relationship of the causal fungus compared with other members of the genus, including the type species e. vaccinii and other species that parasitize blueberry and cranberry (v. macrocarpon). both scanning e ... | 2016 | 24871592 |
| inhibitory effects of wild blueberry anthocyanins and other flavonoids on biomarkers of acute and chronic inflammation in vitro. | wild lowbush blueberries (vaccinium angustifolium ait) are a rich source of anthocyanins and other flavonoids with anti-inflammatory activities; however, their individual effects on cellular signaling remain to be elucidated. this study determined the capacity of blueberry bioactives to protect murine raw 264.7 macrophages from lipopolysaccharide-induced inflammation. fractionation of the crude extract (ce) into polyphenol-rich (ppr), anthocyanin-rich (anc), and proanthocyanidin-rich (pac) fract ... | 2014 | 24397282 |
| field type, trap type and field-edge characteristics affect rhagoletis mendax captures in lowbush blueberries. | blueberry maggot, rhagoletis mendax curran (diptera: tephritidae), is the most important pest of blueberries in eastern north america. insecticide use in fruit-bearing lowbush blueberry fields could be reduced with management strategies focused on vegetative fields. fly distribution and fruit infestation levels were assessed where fruit-bearing and vegetative fields adjoin and along forested edges of vegetative fields. | 2014 | 24357556 |
| identification of sex pheromone components of blueberry spanworm itame argillacearia (lepidoptera: geometridae). | blueberry spanworm, itame argillacearia (packard), is an important defoliator of lowbush (syn. 'wild') blueberry, vaccinium angustifolium aiton, in north-eastern north america. the goal of the present study was to identify the female i. argillacearia sex pheromone, which could be used in traps for monitoring or mass-trapping this pest. gas chromatography/mass spectrometry (gc/ms) and electroantennogram (eag) recordings of sex pheromone gland extracts, in combination with chemical synthesis, a y- ... | 2013 | 23979535 |
| attenuation of alpha-adrenergic-induced vasoconstriction by dietary wild blueberries (vaccinium angustifolium) is mediated by the no-cgmp pathway in spontaneously hypertensive rats (shrs). | the role of wild blueberries (wb) on key signaling steps of nitric oxide (no) and cyclooxygenase (cox) pathways was examined in spontaneously hypertensive rats (shrs) after eight weeks on a control (c) or an 8% w/w wb diet. aortic rings from shrs were stimulated with phenylephrine (phe) in the absence or presence of inhibitors of: soluble guanylyl cyclase (sgc), phosphodiesterase-5 (pde(5)), prostaglandin i(2) (pgi(2)) synthase and thromboxane a(2) (txa(2)) synthase. additionally, enzymatic acti ... | 2013 | 23944991 |
| fractionation of polymeric procyanidins from lowbush blueberry and quantification of procyanidins in selected foods with an optimized normal-phase hplc-ms fluorescent detection method. | the polymeric procyanidins were fractionated from lowbush blueberry on a sephadex lh-20 column. the degree of polymerization (dp) for the polymers was determined by thiolysis to be in a range of 19.9 to 114.1. normal-phase hplc analysis indicated that the polymeric procyanidins did not contain oligomeric procyanidins with dp < 10. the polymers eluted as a single peak at the end of the chromatogram. the normal-phase hplc gradient was modified to improve the separation of procyanidin monomers thro ... | 2002 | 12166971 |
| wild blueberry (vaccinium angustifolium)-enriched diet improves dyslipidaemia and modulates the expression of genes related to lipid metabolism in obese zucker rats. | the present study investigated the potential of a wild blueberry (wb)-enriched diet to improve blood lipid profile and modulate the expression of genes related to lipid homeostasis in obese zucker rats (ozr), a model of the metabolic syndrome with severe dyslipidaemia. for this purpose, twenty ozr and twenty lean zucker rats (lzr; controls) were placed either on a control (c) or an 8 % wb diet for 8 weeks. plasma total cholesterol (tc), hdl-cholesterol and tag concentrations were determined. the ... | 2014 | 23920421 |
| differential modulation of human intestinal bifidobacterium populations after consumption of a wild blueberry (vaccinium angustifolium) drink. | bifidobacteria are gaining increasing interest as health-promoting bacteria. nonetheless, the genus comprises several species, which can exert different effects on human host. previous studies showed that wild blueberry drink consumption could selectively increase intestinal bifidobacteria, suggesting an important role for the polyphenols and fiber present in wild blueberries. this study evaluated the modulation of the most common and abundant bifidobacterial taxonomic groups inhabiting the huma ... | 2013 | 23883473 |
| concentrations of metals in tissues of lowbush blueberry (vaccinium angustifolium) near a copper-nickel smelter at sudbury, ontario, canada: a factor analytic approach. | | 1993 | 8400665 |
| persistence and degradation of the herbicide hexazinone in soils of lowbush blueberry fields in nova scotia, canada. | | 1987 | 3801694 |
| stem pigmentation in lowbush blueberry. | | 1963 | 16655773 |
| somatic deleterious mutation rate in a woody plant: estimation from phenotypic data. | we conducted controlled crosses in populations of the long-lived clonal shrub, vaccinium angustifolium (lowbush blueberry) to estimate inbreeding depression and mutation parameters associated with somatic deleterious mutation. inbreeding depression level was high, with many plants failing to set fruit after self-pollination. we also compared fruit set from autogamous pollinations (pollen collected from within the same inflorescence) with fruit set from geitonogamous pollinations (pollen collecte ... | 2013 | 23778990 |
| antioxidant and metabolite profiling of north american and neotropical blueberries using lc-tof-ms and multivariate analyses. | there are many neotropical blueberries, and recent studies have shown that some have even stronger antioxidant activity than the well-known edible north american blueberries. antioxidant marker compounds were predicted by applying multivariate statistics to data from lc-tof-ms analysis and antioxidant assays of 3 north american blueberry species (vaccinium corymbosum, vaccinium angustifolium, and a defined mixture of vaccinium virgatum with v. corymbosum) and 12 neotropical blueberry species (an ... | 2013 | 23547798 |
| biochemical properties and neuroprotective effects of compounds in various species of berries. | several species of berries, such as blueberries (vaccinium angustifolium) and lingonberries (vaccinium vitis-idaea l.), have attracted much scientific attention in recent years, especially due to their reported antioxidant and anti-inflammatory properties. berries, as with other types of plants, have developed metabolic mechanisms to survive various environmental stresses, some of which involve reactive oxygen species. in addition, the fruits and leaves of berries have high amounts of polyphenol ... | 2017 | 29271934 |
| pupation behavior and predation on drosophila suzukii (diptera: drosophilidae) pupae in maine wild blueberry fields. | drosophila suzukii (matsumura; diptera: drosophilidae) is an invasive vinegar fly and pest of soft fruits in north america, including wild blueberries (vaccinium angustifolium aiton) in maine. despite its presence in the continental united states for 9 yr, little is known about its natural enemy complex. here we report the results of a 3-yr study designed to identify naturally-occurring predators in maine's wild blueberry fields. experiments were conducted to determine pupation site and pupation ... | 2017 | 29029219 |
| effect of time and storage temperature on anthocyanin decay and antioxidant activity in wild blueberry ( vaccinium angustifolium ) powder. | this study evaluated the effects of storage on total and single anthocyanin (acn) content, and total antioxidant activity (taa) of freeze-dried wild blueberry (wb) powder maintained at 25, 42, 60, and 80 °c for 49 days. storage reduced single and total acn content at all of the temperatures; it was slower at 25 °c (-3% after 2 weeks), whereas it was faster at 60 °c (-60%) and at 80 °c (-85%) after 3 days. the values of half-life time (t1/2) were found to be 139, 39, and 12 days at 25, 42, and 60 ... | 2013 | 23489164 |
| characterization of changes in polyphenols, antioxidant capacity and physico-chemical parameters during lowbush blueberry fruit ripening. | changes in major polyphenols, antioxidant capacity, and selected physico-chemical parameters were examined in lowbush blueberry during fruit ripening. polyphenols (phenolic acids, flavonols, flavan-3-ols, and anthocyanins), density, soluble solid content, ph, titratable acidity, sugars, organic acids, and antioxidant capacity were determined in fruits of four maturities: green, pink/red, blue, and over-mature. highest concentrations of flavonols, flavan-3-ols, and phenolic acids were in green fr ... | 2013 | 26784460 |
| quantification of chlorogenic acid and hyperoside directly from crude blueberry (vaccinium angustifolium) leaf extract by nmr spectroscopy analysis: single-laboratory validation. | a single-laboratory-validated nmr spectroscopy method was established for determining the quantity of chlorogenic acid and hyperoside from crude extract material of blueberry leaves of the species vaccinium angustifolium var. laevifolium house. the calibration curve of chlorogenic acid showed a highly linear regression, r = 0.99998. nmr spectroscopy identification and quantification of the constituents directly from the mixture, within the error of hplc-diode array detector analysis, were determ ... | 2013 | 23175973 |
| post-disturbance plant community dynamics following a rare natural-origin fire in a tsuga canadensis forest. | opportunities to directly study infrequent forest disturbance events often lead to valuable information about vegetation dynamics. in mesic temperate forests of north america, stand-replacing crown fire occurs infrequently, with a return interval of 2000-3000 years. rare chance events, however, may have profound impacts on the developmental trajectories of forest ecosystems. for example, it has been postulated that stand-replacing fire may have been an important factor in the establishment of ea ... | 2012 | 22928044 |
| effect of a wild blueberry (vaccinium angustifolium) drink intervention on markers of oxidative stress, inflammation and endothelial function in humans with cardiovascular risk factors. | wild blueberries (wb) (vaccinium angustifolium) are rich sources of polyphenols, such as flavonols, phenolic acids and anthocyanins (acns), reported to decrease the risk of cardiovascular and degenerative diseases. this study investigated the effect of regular consumption of a wb or a placebo (pl) drink on markers of oxidative stress, inflammation and endothelial function in subjects with risk factors for cardiovascular disease. | 2013 | 22733001 |
| influence of accelerated solvent extraction and ultrasound-assisted extraction on the anthocyanin profile of different vaccinium species in the context of statistical models for authentication. | anthocyanins are frequently discussed as marker compounds for fruit product authenticity. proper analysis including sample preparation for the determination of anthocyanin concentrations is crucial for the comparability of authenticity data. the present study determined the influence of accelerated solvent extraction (ase) and ultrasound-assisted extraction (uae), using two different solvent compositions on the anthocyanin profile of bilberries (vaccinium myrtillus l.), lowbush blueberries (vacc ... | 2015 | 26330254 |
| elevated genetic diversity in the emerging blueberry pathogen exobasidium maculosum. | emerging diseases caused by fungi are increasing at an alarming rate. exobasidium leaf and fruit spot of blueberry, caused by the fungus exobasidium maculosum, is an emerging disease that has rapidly increased in prevalence throughout the southeastern usa, severely reducing fruit quality in some plantings. the objectives of this study were to determine the genetic diversity of e. maculosum in the southeastern usa to elucidate the basis of disease emergence and to investigate if populations of e. ... | 2015 | 26207812 |
| antioxidant capacity and polyphenolic content of blueberry (vaccinium corymbosum l.) leaf infusions. | antioxidant capacity and polyphenolic content of leaf infusions prepared from six highbush blueberry cultivars (vaccinium corymbosum l.), one wild lowbush blueberry cultivar (vaccinium myrtillus l.), and one commercially available mix of genotypes were determined. in order to simulate household tea preparation conditions, infusions were prepared in water heated to 95 degrees c. the dynamics of extraction of polyphenolic antioxidants were monitored over the course of 30 minutes. extraction effici ... | 2009 | 19627210 |
| rapid screening of anthocyanins in berry samples by surfactant-mediated matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. | surfactant-mediated matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (maldi-tof-ms) has been used for the identification of flavonoids from three berry extracts: lowbush blueberry (vaccinium angustifolium), lingonberry (vaccinium vitis-idaea), and blackberry (rubus armeniacus). the addition of the surfactant led to suppression of matrix ions from both alpha-cyano-4-hydroxycinnamic acid (chca) and 2',4',6'-trihydroxyacetophenone (thap). this is the first case of this m ... | 2008 | 18072192 |
| anthocyanins in wild blueberries of quebec: extraction and identification. | anthocyanins were extracted from a mixture of berries of vaccinium angustifolium and vaccinium myrtilloïdes at 7.7 degrees c, 26 degrees c, and 79 degrees c using ethanol alone or ethanol acidified with hydrochloric, citric, tartaric, lactic, or phosphoric acids at a solvent to solid ratio of 10. the effect of these parameters on extracted anthocyanins stability was investigated. the ph-differential and hplc-dad methods were used to determine anthocyanin contents. extracted anthocyanins were pur ... | 2007 | 17579428 |
| anti-diabetic properties of the canadian lowbush blueberry vaccinium angustifolium ait. | incidence of type ii diabetes is rapidly increasing worldwide. in order to identify complementary or alternative approaches to existing medications, we studied anti-diabetic properties of vaccinium angustifolium ait., a natural health product recommended for diabetes treatment in canada. ethanol extracts of root, stem, leaf, and fruit were tested at 12.5 microg/ml for anti-diabetic activity in peripheral tissues and pancreatic beta cells using a variety of cell-based bioassays. specifically, we ... | 2006 | 16979328 |
| resveratrol, pterostilbene, and piceatannol in vaccinium berries. | a study was conducted to determine the presence of resveratrol, pterostilbene, and piceatannol in vaccinium berries. samples representing selections and cultivars of 10 species from mississippi, north carolina, oregon, and canada were analyzed by gas chromatography/mass spectrometry. resveratrol was found in vaccinium angustifolium (lowbush blueberry), vaccinium arboretum (sparkleberry), vaccinium ashei (rabbiteye blueberry), vaccinium corymbosum (highbush blueberry), vaccinium elliottii (elliot ... | 2004 | 15264904 |
| effects of the herbicide hexazinone on nutrient cycling in a low-ph blueberry soil. | the herbicide hexazinone was applied as the commercial formulation velpar l at field-rate (fr) concentrations of fr (14.77 microg ai g(-1)), frx5 (73.85 microg ai g(-1)), frx10 (147.70 microg ai g(-1)), frx50 (738.50 microg ai g(-1)), and frx100 (1477.00 microg ai g(-1)) to acidic soil, ph 4.12, taken from a lowbush blueberry field. hexazinone was tested for inhibitory effects on various transformations of the nitrogen cycle and soil respiration. nitrogen fixation was unaffected by hexazinone le ... | 2004 | 15037997 |
| the influence of pruning on wasp inhabitants of galls induced by hemadas nubilipennis ashmead (hymenoptera: pteromalidae) on lowbush blueberry. | the efficacy of pruning methods for managing blueberry stem galls caused by the chalcid wasp, hemadas nubilipennis (ashmead), was studied in five commercial lowbush blueberry (vaccinium angustifolium aiton) fields in nova scotia, canada, between october 1999 and may 2000. blueberry fields were mowed in the fall, and burning treatments were subsequently applied either in the fall or the spring. three treatments were compared: mowing only, mowing plus fall burning, and mowing plus spring burning. ... | 2003 | 14503597 |
| resveratrol in raw and baked blueberries and bilberries. | resveratrol in the fruits of bilberry (vaccinium myrtillus l.), the lowbush "wild" blueberry (vaccinium angustifolium aiton), the rabbiteye blueberry (vaccinium ashei reade), and the highbush blueberry (vaccinium corymbosum l.) were measured using a new assay based on high-performance liquid chromatography-tandem mass spectrometry (lc-ms/ms). the lc-ms/ms assay provided lower limits of detection than previous methods for resveratrol measurement, 90 fmol of trans-resveratrol injected on-column, a ... | 2003 | 13129286 |
| integrated pest management of rhagoletis mendax (diptera: tephritidae) in lowbush blueberry using vegetative field management. | economic control of rhagoletis mendax was achieved by applying insecticidal sprays to commercial lowbush blueberry vegetative fields, in a biennial production system, rather than to the fruiting fields, when the threshold was exceeded. the viability of this integrated pest management of r. mendax for lowbush blueberries was demonstrated over a 9-yr interval in new brunswick where three sites were monitored for 2 yr, eight sites for 4 yr, and one site for 9 yr. control of r. mendax in lowbush blu ... | 2002 | 12403422 |
| absorption and metabolism of anthocyanins in elderly women after consumption of elderberry or blueberry. | the absorption and metabolism of anthocyanins (acn) in humans was studied in four elderly women given 12 g elderberry extract (ebx) (720 mg total acn), and six elderly women given 189 g lowbush blueberry (bb) (690 mg total acn). the two major acn in ebx, cyanidin-3-glucoside and cyanidin-3-sambubioside, as well as four metabolites: 1) peonidin 3-glucoside, 2) peonidin 3-sambubioside, 3) peonidin monoglucuronide, and 4) cyanidin-3-glucoside monoglucuronide were identified in urine within 4 h of c ... | 2002 | 12097661 |
| in vitro anticancer activity of fruit extracts from vaccinium species. | fruit extracts of four vaccinium species (lowbush blueberry, bilberry, cranberry, and lingonberry) were screened for anticarcinogenic compounds by a combination of fractionation and in vitro testing of their ability to induce the phase ii xenobiotic detoxification enzyme quinone reductase (qr) and to inhibit the induction of ornithine decarboxylase (odc), the rate-limiting enzyme in polyamine synthesis, by the tumor promoter phorbol 12-myristate 13-acetate (tpa). the crude extracts, anthocyanin ... | 1996 | 8693031 |
| procyanidin, anthocyanin, and chlorogenic acid contents of highbush and lowbush blueberries. | the health benefits of blueberry consumption on the vascular system and brain are mediated in part by their flavonoid content. in light of this, six cultivated highbush blueberry varieties ( vaccinium corymbosum l.) and one lowbush or wild blueberry ( vaccinium angustifolium l.) were analyzed for their anthocyanin, flavanol oligomer, and chlorogenic acid contents. the highbush varieties bluecrop, o'neal, bluejay, and brigitta had significantly greater levels of anthocyanidins compared to the oth ... | 2012 | 22175691 |
| harvestman (opiliones) fauna associated with maine lowbush blueberry fields in the major production areas of washington and hancock counties. | over a period of 19 yr, the harvestman (opiliones) community associated with the lowbush blueberry agro-ecosystem in maine was studied. eight species representing five genera, four subfamilies, and two families of harvestmen belonging to the suborder eupnoi were collected. the harvestman community was dominated by two introduced, synanthropic species: phalangium opilio in all but 1 yr (that year dominated by rilaena triangularis). rilaena was recorded for the first time from eastern north americ ... | 2010 | 22546437 |