| homology of the major birch-pollen allergen, bet v i, with the major pollen allergens of alder, hazel, and hornbeam at the nucleic acid level as determined by cross-hybridization. | to investigate the relationship of the major allergens of birch (bet v i), alder (aln g i), hazel (cor a i), and hornbeam (car b i) at the nucleic acid level, a cdna clone coding for the complete bet v i protein was used for northern and southern blot experiments. rnas were isolated from pollen of birch (betula verrucosa), alder (alnus glutinosa), hazel (corylus avellana), and hornbeam (carpinus betulus). hybridization was performed at different stringencies. at high stringency, comparable bindi ... | 1991 | 2005320 |
| comparative studies on tree pollen allergens. xiv. characterization of the birch (betula verrucosa) and hazel (corylus avellana) pollen extracts by horizontal 2-d sds-page combined with electrophoretic transfer and ige immunoautoradiography. | the crude aqueous extracts of birch (betula verrucosa) and hazel (corylus avellana) pollen were characterized by horizontal isoelectric focusing (ief) and one-dimensional and two-dimensional sodium dodecyl sulfate polyacrylamide gel electrophoresis (1-d and 2-d sds/page). isoelectric focusing reference patterns obtained in ph 3.5 to 9.5 gradient gels contained 31 and 41 bands while the 2-d patterns consisted of 51 and 72 protein spots, respectively. electrophoretic transfer to nitrocellulose mem ... | 1988 | 3189966 |
| immuno-electronmicroscopic identification and localization of the antigenic proteins of tree pollen grains. | the localization of antigenic proteins on ultrathin sections of pollen grains represents an interesting approach to understanding the release mechanisms of these antigens when the pollen grains come in contact with various physiological fluids. using different rabbit antibodies we have demonstrated the locations of these antigens in the various structures of pollen grains. we further demonstrated the cross-reactivities between alder (alnus incana), birch (betula verrucosa) and hazel (corylus ave ... | 1988 | 3207183 |
| elemental analysis of hazelnut kernels and shells by spark source mass spectrometry. | samples from three varieties of hazelnuts, namely corylus avellana var. pontica, c. maxima mill. and corylus colurna var. glandulifera, which are cultivated in turkey, were analyzed by spark-source mass spectrometry (ssms). a total of 35 elements were determined in the samples. it was generally shown that 3-5 elements were in nontrace, 9-13 were in trace and 17-20 were in ultratrace amounts in kernels and shells. | 1985 | 4002863 |
| immunochemical characterization of reference alder (alnus glutinosa) and hazel (corylus avellana) pollen extracts and the partial immunochemical identity between the major allergens of alder, birch and hazel pollens. | dialysed extracts of alder (alnus glutinosa) and hazel (corylus avellana) pollens were characterized by immunochemical methods. the alder pollen extract contained at least 33 distinct antigens of which one, antigen 5, was classified as a major allergen, three, antigens 4, 10, and 17, were classified as intermediate allergens and two, antigens 19 and 23, were classified as minor allergens. the molecular weight and pi of the major allergen were determined to be 19,000 d and 5.2, respectively. the ... | 1985 | 4073410 |
| kinesin-related polypeptide is associated with vesicles from corylus avellana pollen. | a 100-kda polypeptide with microtubule-interacting properties was identified in a golgi vesicle-enriched fraction from corylus avellana pollen. the k71s23 antibody (directed to the kinesin heavy chain from bovine brain) [tiezzi et al., 1992: cell motil. cytoskeleton 21:132-137] localized the polypeptide on the external surface of membrane-bounded organelles. some 100-kda-containing vesicles copelleted with microtubules (polymerized from purified bovine brain tubulin) either in presence or absenc ... | 1994 | 7820865 |
| mycoflora and mycotoxin of hazelnut (corylus avellana l.) and walnut (juglans regia l.) seeds in egypt. | fifty-one species and 3 varieties appertaining to 20 genera were collected from 20 samples of each of hazelnut and walnut seeds on glucose- and 40% (w/v) sucrose-czapek's agar at 25 degrees c and 45 degrees c with the most common mesophiles were aspergillus flavus, a. fumigatus, a. niger, cladosporium cladosporioides, c. herbarum, penicillium chrysogenum, p. citrinum and p. oxalicum. fusarium (represented by f. equiseti, f. moniliforme and f. oxysporum) was recovered from walnut seeds in moderat ... | 1993 | 8480455 |
| evaluation of anti-inflammatory activity of some swedish medicinal plants. inhibition of prostaglandin biosynthesis and paf-induced exocytosis. | plants used in swedish traditional medicine to treat inflammatory diseases and/or wounds were selected, based on literature data, for evaluation of inhibitory activity on prostaglandin biosynthesis and platelet activating factor (paf)-induced exocytosis in vitro. fifty-nine water extracts from 52 different plants in 28 families were tested. a number of plants, e.g. calluna vulgaris, corylus avellana, geum urbanum, juniperus communis, polygonum aviculare, potentilla erecta and salix caprea were f ... | 1995 | 8583796 |
| high-level expression of tree pollen isoallergens in escherichia coli. | cdnas coding for the major allergen of alder (alnus glutinosa) pollen aln g 1, for nine isoforms of bet v 1, the major birch (betula verrucosa) pollen allergen, and for four isoforms of cor a 1, the major allergen of hazel (corylus avellana) pollen, were inserted into the plasmid pmw175 or pmw 172 and expressed in escherichia coli as recombinant non-fusion proteins. these constructs produced between 20 and 160 mg protein/l. the recombinant tree pollen isoallergens were tested in immunoblots for ... | 1996 | 8688676 |
| microspectrophotometric evaluation of digestibility of pollen grains. | digestibility of pollen grains of poppy (papaver rhoeas) and hazelnut (corylus avellana) subjected to a human-like in vitro digestion with pancreatic enzymes was evaluated. pollens showed different types of walls. digestibility was determined for total protein and insoluble carbohydrate contents by means of a new application of microspectrophotometry. results demonstrated that pollen grains of both species were only partly digested; after 24 h treatment, only 26% of carbohydrates and 48% of prot ... | 1997 | 9201746 |
| quantification in mass units of bet v 1, the main allergen of betula verrucosa pollen, by a monoclonal antibody based-elisa. | fagales pollens are considered among the main agents responsible for allergic diseases in many countries of the northern hemisphere and single major allergens have been shown to be responsible for these responses. | 1997 | 9291291 |
| effects of corylus avellana in acetaminophen and ccl4 induced toxicosis. | our study investigated the effects of corylus avellana extract on acetaminophen and carbon tetrachloride intoxicated liver of young rats. hepatocytolysis was determined by measuring the level of serum transaminases (gpt and got), steatosis by sudan black staining, histological structures by hamatoxylineosin staining and the activity of enzymes such as sdh, gtdh, g-6-pase and atpase. comparatively, the most serious lesions appeared in ccl4 intoxication. corylus avellana extract had some beneficia ... | 1999 | 10190184 |
| variation of gas exchange within native plant species of switzerland and relationships with ozone injury: an open-top experiment. | gas exchange and ozone-induced foliar injury were intensively measured during a 6-day period in mid-august 1998 on leaves of acer pseudoplatanus, betula pendula, corylus avellana, fagus sylvatica, fraxinus excelsior, morus nigra, prunus avium, prunus serotina, rhamnus cathartica, and viburnum lantana at a forest nursery site in canton ticino, switzerland. plants were grown in four open plots (aa), four open-top chambers receiving carbon-filtered (cf) air, and four receiving non-filtered (nf) air ... | 2001 | 11383335 |
| comparison of four variants of a major allergen in hazelnut (corylus avellana) cor a 1.04 with the major hazel pollen allergen cor a 1.01. | the aim of this study was to produce the bet v 1-related major hazelnut allergen cor a 1.0401 and variants thereof as recombinant allergens, and to compare their immuno-reactivity with the major hazel pollen allergen using sera of patients whose hazelnut allergy recently was confirmed by double-blind placebo-controlled food challenges (dbpcfc) in a multicenter study. total rna was isolated from immature hazelnuts and transcribed into cdna. full length coding dna obtained by pcr-strategy was subc ... | 2002 | 11750653 |
| phenological modifications in plants by various edaphic factors. | various mechanical, chemical and physical soil analyses were carried out, in addition to weather observations, for 3 years at several sites along an oceanic-continental gradient in a fjord district in western norway. all the environmental factors observed were correlated with the spring and a few late-season phenophases of many native and cultivated woody plants and some herbs by simple, linear correlations and by stepwise multiple and partial analyses. different techniques were used to try and ... | 2001 | 11769320 |
| lichens of the knyszyńska forest (ne poland). | during the period 1991-1999 the lichen species composition of 26 reserves of the knyszyńska forest were examined. 315 taxa, including 271 species were found. epiphytic lichens were predominant, while epilithic species were the least common. of the coniferous trees, pine (pinus sylvestis) was the habitat which supported most species (67), and common larch (larix decidua) the fewest (5). only two species were found on juniper (juniper communis). of deciduous trees, the largest number of species de ... | 2001 | 11780570 |
| bacteria associated with hazelnut (corylus avellana l.) decline are of two groups: pseudomonas avellanae and strains resembling p. syringae pv. syringae. | a total of 118 fluorescent pseudomonads associated with hazelnut decline, which has been occurring for many years in different areas of northern greece and italy, were assessed by performing a repetitive pcr analysis with enterobacterial repetitive intergenic consensus, box element, and repetive extragenic palindromic primer sets, sodium dodecyl sulfate-polyacrylamide gel electrophoresis (sds-page) of whole-cell protein extracts, a carbon compound utilization analysis, and an analysis to determi ... | 2002 | 11823181 |
| mycoflora of hazelnut (corylus avellana l.) and aflatoxin content in hazelnut kernels artificially infected with aspergillus parasiticus. | in this research, 30 hazelnut samples were used to determine their internal mould populations and their aflatoxin contents. the results showed that aspergillus was the most common genus in the experimental samples (96.6% of all samples). thirty-one% of isolates were classified as aspergillus flavus and none of the samples contained aflatoxins. in the second part of the experiment, the kernels were inoculated with conidia of aspergillus parasiticus and incubated at three different humidified cond ... | 2002 | 12108220 |
| potential bioindicator plant species for ambient ozone in forested mountain areas of central europe. | from 1993 to 2000, trees, shrubs, forbs and vines were evaluated for symptoms of probable ozone injury in the vicinity of passive ozone samplers or active ozone monitors in forest condition assessment networks in mostly mountainous regions, principally the carpathian mountain range, in the central european countries czech republic, poland, romania, slovakia and ukraine. each country was visited at least twice during the time period. over the course of eight seasons, 29 species of native plants w ... | 2002 | 12166662 |
| remarkable, overlooked and new microfungi in north rhine-westphalia, germany. | during our investigations of the micro flora in nrw in the years of 1999 and 2000 we were able to collect and identify some new and rare species of micro fungi as parasites and saprophytes on wild and ornamental plants. some of them are new for germany: podosphaera xanthii on coreopsis verticillata; cercospora traversiana on trigonella foenum-graecum; passalora dubia on atriplex hortensis; ophiobolus cirsii on carduus spec.; periconia britannica on polemonium coeruleum; ascochyta leptospora on a ... | 2001 | 12425026 |
| stoichiometry of foliar carbon constituents varies along light gradients in temperate woody canopies: implications for foliage morphological plasticity. | foliar morphology and chemical composition were examined along a light gradient in the canopies of five deciduous temperate woody species, ranked according to shade-tolerance as populus tremula l. < fraxinus excelsior l. < tilia cordata mill. = corylus avellana l. < fagus sylvatica l. foliar carbon was divided between structural (cell-wall polysaccharides, lignin) and nonstructural (proteins, ethanol-soluble carbohydrates, starch) fractions. foliar morphology of all species was strongly affected ... | 1998 | 12651358 |
| an analysis of light effects on foliar morphology, physiology, and light interception in temperate deciduous woody species of contrasting shade tolerance. | maximum rubisco activities (v(cmax)), rates of photosynthetic electron transport (j(max)), and leaf nitrogen and chlorophyll concentrations were studied along a light gradient in the canopies of four temperate deciduous species differing in shade tolerance according to the ranking: populus tremula l. < fraxinus excelsior l. < tilia cordata mill. = corylus avellana l. long-term light environment at the canopy sampling locations was characterized by the fractional penetration of irradiance in the ... | 1998 | 12651418 |
| turkish tombul hazelnut (corylus avellana l.). 1. compositional characteristics. | the quality of tombul (round) hazelnut, grown in the giresun province of turkey, was determined by measuring proximate composition, minerals, vitamins, dietary fiber, amino acids, and taste active components (free amino acids, sugars, and organic acids). fat was the predominant component in tombul hazelnut (approximately 61%). the major minerals were potassium, phosphorus, calcium, magnesium, and selenium. hazelnut was also found to serve as an excellent source of vitamin e (24 mg/100 g) and a g ... | 2003 | 12797745 |
| turkish tombul hazelnut (corylus avellana l.). 2. lipid characteristics and oxidative stability. | the quality of crude hazelnut oil extracted from tombul (round) hazelnut, grown in the giresun province of turkey, was determined by measuring lipid classes, fatty acids, and fat soluble bioactives (tocopherols and phytosterols). oxygen uptake, peroxide value, thiobarbituric acid reactive substances, and alpha-tocopherol levels of stripped and crude hazelnut oils in bulk and oil-in-water (o/w) emulsion systems were also evaluated as indices of lipid oxidation over a 21 day storage period at 60 d ... | 2003 | 12797746 |
| rapd markers linked to eastern filbert blight resistance in corylus avellana. | a total of 1,110 decamer primers were screened for rapd markers linked to a dominant allele in hazelnut ( corylus avellana) that confers resistance to eastern filbert blight caused by anisogramma anomala. twenty rapd markers linked in coupling, and five markers linked in repulsion, were found. a seedling population was used to construct a linkage map of the region flanking the resistance locus. the map spans 46.6 cm, with 14 markers on one side of the resistance locus and eight on the other side ... | 2004 | 14569427 |
| biochemical and molecular characterization of hazelnut (corylus avellana) seed lipoxygenases. | plant lipoxygenases (loxs) are a class of dioxygenases which display diverse functions in several physiological processes such as growth, development and response to biotic and abiotic stresses. even though loxs have been characterized from several plant species, the physiological role of seed loxs is still unclear. with the aim to better clarify the occurrence of loxs and their influence on hazelnut seed quality, we carried out the biochemical and molecular characterization of the main lox isof ... | 2003 | 14622302 |
| variations in leaf morphometry and nitrogen concentration in betula pendula roth., corylus avellana l. and lonicera xylosteum l. | relations between leaf dry weight to leaf area (lwa), leaf nitrogen concentration and irradiance inside a natural canopy were studied in betula pendula roth., corylus avellana l. and lonicera xylosteum l. in all species, lwa increased with increasing irradiance. relative variability in lwa was smaller in betula pendula than in the other two species. in corylus avellana, lwa also depended on total plant height. foliar nitrogen concentration (on a dry weight basis) increased with increasing irradi ... | 1993 | 14969921 |
| bioindicator plants for ambient ozone in central and eastern europe. | sixteen species of native detector plants for ambient ozone have been identified for use in central and eastern europe. they include the forbs alchemilla sp., astrantia major, centuarea nigra, centauria scabiosa, impatiens parviflora, lapsana communis, rumex acetosa and senecio subalpinus; the shrubs corylus avellana, cornus sanguinea and sambucus racemosa; the trees alnus incana, pinus cembra and sorbus aucuparia; and the vines humulus lupulus and parthenocissus quinquefolia. sensitivity to ozo ... | 2004 | 15046838 |
| hazelnut (corylus avellana) vicilin cor a 11: molecular characterization of a glycoprotein and its allergenic activity. | in europe, hazelnuts (corylus avellana) are a frequent cause of food allergies. several important hazelnut allergens have been previously identified and characterized. specific n-glycans are known to induce strong ige responses of uncertain clinical relevance, but so far the allergenic potential of glycoproteins from hazelnut has not been investigated. the aim of the study was the molecular characterization of the glycosylated vicilin cor a 11 from hazelnut and the analysis of its allergenic act ... | 2004 | 15233621 |
| in vitro effects of three woody plant and sainfoin extracts on 3rd-stage larvae and adult worms of three gastrointestinal nematodes. | most studies on the effects of tanniferous plants on nematodes have examined forages but have neglected the woody plants. therefore, in vitro effects of extracts from 3 woody plants (rubus fructicosus, quercus robur, corylus avellana) have been tested on trichostrongyles and compared to sainfoin, a legume forage. because some in vivo results indicated that the effects of tannins differed depending on the parasitic species and/or stages, the effects were measured on 3rd-stage larvae (l3) and adul ... | 2004 | 15267113 |
| sensitization to common allergens, especially pollens, among children with respiratory allergy in the trakya region of turkey. | asthma and allergic rhinitis are common problems in children and the causative pollen allergens vary according to the geographical area. the aim of this study was to investigate patterns of sensitization to common inhalant allergens, especially pollens, in turkish children living in the trakya region and to determine differences between rural and urban areas. allergen skin testing was prospectively performed on 539 children aged between 4 and 17 years with respiratory allergy. the reaction was c ... | 2004 | 15783130 |
| sandwich immunoassays for the determination of peanut and hazelnut traces in foods. | people suffering from food allergies are dependent on accurate food labeling, as an avoidance diet is the only effective countermeasure. even a small amount of allergenic protein can trigger severe reactions in highly sensitized patients. therefore, sensitive and reliable tests are needed to detect potential cross-contamination. in this paper two fast sandwich immunoassays are described for the determination of peanut (arachis hypogaea) and hazelnut (corylus avellana) traces in complex food matr ... | 2005 | 15853366 |
| a genetic linkage map for hazelnut (corylus avellana l.) based on rapd and ssr markers. | a linkage map for european hazelnut (corylus avellana l.) was constructed using random amplified polymorphic dna (rapd) and simple sequence repeat (ssr) markers and the 2-way pseudotestcross approach. a full-sib population of 144 seedlings from the cross osu 252.146 x osu 414.062 was used. rapd markers in testcross configuration, segregating 1:1, were used to construct separate maps for each parent. fifty additional rapd loci were assigned to linkage groups as accessory markers whose exact locat ... | 2006 | 16498462 |
| dna typing and genetic relations among european hazelnut (corylus avellana l.) cultivars using microsatellite markers. | in this work, 78 hazelnut (corylus avellana l.) cultivars from various germplasm repositories were studied at 16 simple sequence repeat (ssr) loci in order to identify the genotypes and investigate their genetic relations. polymorphism at ssr loci was evaluated on the basis of number of alleles (mean: 9.4), expected heterozygosity (mean: 0.78), and power of discrimination (mean: 0.91). several synonyms reported in the literature were confirmed, and new cases of synonymy were identified. the pare ... | 2006 | 16936839 |
| clinical efficacy and safety of sublingual immunotherapy with tree pollen extract in children. | subcutaneous immunotherapy has been the principal approach of immunotherapy in the treatment of allergic diseases. several clinical studies with birch, alder or hazel pollen extract conducted as subcutaneous immunotherapy have been published suggesting a well-tolerated and clinically effective treatment. only a few clinical studies of sublingual immunotherapy (slit) with these allergens have been published. this study investigated the clinical efficacy, safety and dose-response relationship of s ... | 2006 | 16942565 |
| sublingual immunotherapy in children modulates allergen-induced in vitro expression of cytokine mrna in pbmc. | during subcutaneous immunotherapy (scit), there is a local mucosal shift from th2 to th1 type cytokine predominance and downregulation of interleukin (il)-5 and eosinophilia. according to recent studies il-10- and transforming growth factor (tgf)-beta-induced tolerance is another key phenomenon in scit. few data to date is available on mechanisms and roles of these cytokines in sublingual immunotherapy (slit). | 2006 | 16942566 |
| in vitro cell cultures obtained from different explants of corylus avellana produce taxol and taxanes. | taxol is an effective antineoplastic agent, originally extracted from the bark of taxus brevifolia with a low yield. many attempts have been made to produce taxol by chemical synthesis, semi-synthesis and plant tissue cultures. however, to date, the availability of this compound is not sufficient to satisfy the commercial requirements. the aim of the present work was to produce suspension cell cultures from plants not belonging to taxus genus and to verify whether they produced taxol and taxanes ... | 2006 | 17150090 |
| functional lipid characteristics of turkish tombul hazelnut (corylus avellana l.). | the quality of crude oil extracted from tombul (round) hazelnut, grown in the giresun province of turkey, was evaluated for its fatty acid, triacylglycerol (tag), tocol, and phytosterol compositions. oleic acid contributed 82.78% to the total fatty acids, followed by linoleic, palmitic, and stearic acids. among 12 tags separated, 11 were identified (including one unknown): lll, oll, pll, ool, pol, ppl, ooo, poo, ppo, soo, and pso (where p, palmitoyl; s, stearoyl; o, oleoyl; and l, linoleoyl). th ... | 2006 | 17177557 |
| antioxidant phytochemicals in hazelnut kernel (corylus avellana l.) and hazelnut byproducts. | antioxidant efficacies of ethanol extracts of defatted raw hazelnut kernel and hazelnut byproducts (skin, hard shell, green leafy cover, and tree leaf) were evaluated by monitoring total antioxidant activity (taa) and free-radical scavenging activity tests [hydrogen peroxide, superoxide radical, and 2,2-diphenyl-1-picrylhydrazyl (dpph) radical], together with antioxidant activity in a beta-carotene-linoleate model system, inhibition of oxidation of human low-density lipoprotein (ldl) cholesterol ... | 2007 | 17249682 |
| wild vascular plants gathered for consumption in the polish countryside: a review. | this paper is an ethnobotanical review of wild edible plants gathered for consumption from the end of the 18th century to the present day, within the present borders of poland. | 2007 | 17433114 |
| allergen-induced in vitro expression of il-18, slam and gata-3 mrna in pbmc during sublingual immunotherapy. | signalling lymphocytic activation molecule (slam) and interleukin (il)-18 induce interferon (ifn)-gamma production from th1 cells. the allergen-induced slam and il-18 mrna expressions are increased during subcutaneous immunotherapy (scit), but nothing is known about their role during sublingual immunotherapy (slit). transcription factor gata-3 is associated with th2 cells but its role in scit and slit is yet unexplored. this study was undertaken to analyse the allergen induced in vitro mrna expr ... | 2007 | 17620074 |
| evaluation of the microelement profile of turkish hazelnut (corylus avellana l.) varieties for human nutrition and health. | in this study, the levels of boron (b), cobalt (co), copper (cu), chromium (cr), iron (fe), lithium (li), nickel (ni), selenium (se) and zinc (zn) microelements in 16 hazelnut samples were determined by inductively coupled plasma mass spectrometry and atomic absorption spectroscopy after microwave digestion, and are discussed for human nutrition and health. significant differences were observed between the microelement contents of the 16 varieties (p < 0.01). the average microelements concentrat ... | 2007 | 17852487 |
| molecular cloning and functional analysis of the gene encoding 3-hydroxy-3-methylglutaryl coenzyme a reductase from hazel (corylus avellana l. gasaway). | the enzyme 3-hydroxy-3-methylglutaryl-coa reductase (hmgr; ec1.1.1.34) catalyzes the first committed step of isoprenoids biosynthesis in mva pathway. here we report for the first time the cloning and characterization of a full-length cdna encoding hmgr (designated as cghmgr, genbank accession number ef206343) from hazel (corylus avellana l. gasaway), a taxol-producing plant species. the full-length cdna of cghmgr was 2064 bp containing a 1704-bp orf encoding 567 amino acids. bioinformatic analys ... | 2007 | 18047779 |
| taxanes from shells and leaves of corylus avellana. | paclitaxel is an effective antineoplastic agent originally extracted in low yield from the bark of taxus brevifolia. although it was generally considered a particular metabolite of taxus sp., paclitaxel was recently found in hazel cell cultures. the aim of the present work was to verify whether hazel differentiated tissues could be used as a commercial source of paclitaxel and other taxanes. thus, shells and leaves of hazel plants were analyzed by elisa and hplc-ms. both shell and leaf extracts ... | 2008 | 18163585 |
| factors influencing fungal and aflatoxin levels in turkish hazelnuts (corylus avellana l.) during growth, harvest, drying and storage: a 3-year study. | the levels aflatoxins in turkish hazelnuts have been monitored over a 3-years period (2002-2004). periodical sampling was made in 72 different orchards at different locations representative of the hazelnut-growing areas and post-harvest applications. various parameters (aflatoxins, water activity, moulds) were analysed and environmental conditions (temperature and relative humidity) recorded during growing and at different stages of harvest and post-harvest processing, involving three different ... | 2008 | 18286411 |
| chemical composition, and antioxidant and antimicrobial activities of three hazelnut (corylus avellana l.) cultivars. | hazelnut (corylus avellana l.) is a very popular dry fruit in the world being consumed in different form and presentations. in the present work, three hazelnut cultivars (cv. daviana, fertille de coutard and m. bollwiller) produced in portugal, were characterized in respect to their chemical composition, antioxidant potential and antimicrobial activity. the samples were analysed for proximate constituents (moisture, fat, crude protein, ash), nutritional value and fatty acids profile by gc/fid. a ... | 2008 | 18316150 |
| antibacterial activity of tannin constituents from phaseolus vulgaris, fagoypyrum esculentum, corylus avellana and juglans nigra. | tannins were fractionated from acetonic extract preparations of phenolic compounds from phaseolus vulgaris, fagoypyrum esculentum, corylus avellana and juglans nigra. wide variations in antibacterial activities ranging from mics of 62.5 to 500 microg/ml were apparent. of particular note was a relatively high level of activity (62.5 to 125 microg/ml) for all extracts against listeria monocytogenes. | 2008 | 18325686 |
| comparative measurements of transpiration and canopy conductance in two mixed deciduous woodlands differing in structure and species composition. | transpiration of two heterogeneous broad-leaved woodlands in southern england was monitored by the sap flux technique throughout the 2006 growing season. grimsbury wood, which had a leaf area index (lai) of 3.9, was dominated by oak (quercus robur l.) and birch (betula pubescens l.) and had a continuous hazel (corylus avellana l.) understory. wytham woods, which had an lai of 3.6, was dominated by ash (fraxinus excelsior l.) and sycamore (acer pseudoplatanus l.) and had only a sparse understory. ... | 2008 | 18381276 |
| characterisation and phylogenetic relationships of anisogramma virgultorum and a. anomala in the diaporthales (ascomycota). | the two diaporthalean fungi anisogramma virgultorum and a. anomala are biotrophic parasites. a. virgultorum causes stromatal cankers on young shoots of birch whereas a. anomala infects young branches of corylus avellana. although previous classifications based on morphological characteristics placed both species in the gnomoniaceae, diaporthales, their taxonomic position within the order and their relationship to each other required further clarification. we determined the nucleotide sequences o ... | 2009 | 18824098 |
| pseudomonas syringae pv. coryli, the causal agent of bacterial twig dieback of corylus avellana. | abstract thirty-eight bacterial strains isolated from hazelnut (corylus avellana) cv. tonda gentile delle langhe showing a twig dieback in piedmont and sardinia, italy, were studied by a polyphasic approach. all strains were assessed by fatty acids analysis and repetitive sequence-based polymerase chain reaction (pcr) fingerprinting using box and eric primer sets. representative strains also were assessed by sequencing the 16s rdna and hrpl genes, determining the presence of the syrb gene, testi ... | 2005 | 18943363 |
| factors affecting the release of ascospores of anisogramma anomala. | abstract relationships between environmental factors and release of ascospores of anisogramma anomala, the causal agent of eastern filbert blight, were examined in four european hazelnut (corylus avellana) orchards during a 2-year period. in each orchard, burkhard volumetric spore traps and automated weather-monitoring equipment were deployed for 12-week periods beginning at budbreak, when hazelnut becomes susceptible to infection. ascospores of a. anomala were released when stromata on the surf ... | 1998 | 18944980 |
| seed dispersal patterns in a temperate forest during a mast event: performance of alternative dispersal kernels. | seed dispersal patterns were studied in a north-western spain temperate forest community to assess the performances of alternative dispersal kernels during two years with ecologically contrasting scenarios; a non-mast year, and a mast year of the dominant canopy species, beech fagus sylvatica. dispersal kernels were fitted under a bayesian modeling framework. both simple and mixture kernels were considered for the five more abundant tree species (corylus avellana, crataegus monogyna, f. sylvatic ... | 2009 | 19018573 |
| molecular cloning and functional expression analysis of a new gene encoding geranylgeranyl diphosphate synthase from hazel (corylus avellana l. gasaway). | geranylgeranyl diphosphate synthase (ggpps) [ec 2.5.1.29] catalyzes the biosynthesis of geranylgeranyl diphosphate (ggpp), which is a key precursor for diterpenes such as taxol. herein, a full-length cdna encoding ggpps (designated as cgggpps) was cloned and characterized from hazel (corylus avellana l. gasaway), a taxol-producing angiosperms. the full-length cdna of cgggpps was 1515 bp with a 1122 bp open reading frame (orf) encoding a 373 amino acid polypeptide. the cgggpps genomic dna sequenc ... | 2010 | 20012370 |
| biodiversity and new records of microfungi in the ruhrarea (north rhine westfalia), germany. | during our investigations of the microflora in nrw (duisburg, düsseldorf and essen incl. the greenhouse of the botanical garden) in 2007 and 2008, we were able to collect and identify about 55 species on trees, bushes and ornamental plants as parasites and saprophytes. some of these species are new for germany or have been only rarely found until now. most of the species belong the ascomycotina, basidiomycotina and deuteromycotina for example arthrocladiella mougeotii (lév.) vassilkov. on lycium ... | 2009 | 20222564 |
| effects of roasting on oil and fatty acid composition of turkish hazelnut varieties (corylus avellana l.). | a total of 18 natural and roasted hazelnut varieties (namely, aci, cavcava, cakildak, foşa, ham, incekara, kalinkara, kan, karafindik, kargalak, kuş, mincane, palaz, sivri, tombul, uzunmusa, yassi badem, and yuvarlak badem), grown in the giresun province of turkey, were compared for their differences in oil content and fatty acid profiles. the oil content in natural and roasted hazelnut varieties ranged from 57.85% for kargalak to 68.31% for incekara and from 61.37% for kargalak to 71.72% for in ... | 2010 | 20384549 |
| pollen enzymes degrade human tear fluid and conjunctival cells: an approach to understanding seasonal non-allergic conjunctivitis. | during pollen seasons, allergy-like symptoms can be observed in proven non-allergy sufferers. pollen enzymes are thought to be responsible for conjunctival irritation. we investigated the influence of the well-known aggressive pollen species hazelnut (corylus avellana) and birch pollen (betula pendula) on both human tear fluid and conjunctival cell cultures. this study is an approach to seasonal non-allergic conjunctivitis (snac) syndrome. | 2010 | 20502029 |
| young infants with atopic dermatitis can display sensitization to cor a 9, an 11s legumin-like seed-storage protein from hazelnut (corylus avellana). | allergy to hazelnut (corylus avellana) can be severe and occur at young age. atopic dermatitis (ad) can involve sensitization to various foods. the objective is to investigate the pattern of hazelnut sensitization in infants with ad. sera of 34 infants all under 1 year of age and suffering from ad were selected according to prior specific ige results. twenty-nine infants were sensitized to traditional food allergens, five were not. from the 29 infants with a sensitization to at least one food al ... | 2011 | 20579306 |
| effects of roasting on taste-active compounds of turkish hazelnut varieties ( corylus avellana l.). | the effect of roasting on taste-active components of 18 native hazelnut varieties, grown in the giresun province of turkey, was assessed. samples were examined for their sugars, organic acids, condensed tannins, and free phenolic acids. six sugars (fructose, glucose, sucrose, myo-inositol, raffinose, and stachyose), seven organic acids (oxalic, maleic, citric, malic, lactic, succinic, and acetic), and one phenolic acid (gallic acid) were positively identified in natural and roasted hazelnut vari ... | 2010 | 20681657 |
| age-related sensitization profiles for hazelnut (corylus avellana) in a birch-endemic region. | symptoms of hazelnut allergy seem related to geographic and possibly age variations in allergen recognition. | 2011 | 21342279 |
| A bacterial artificial chromosome library for 'Jefferson' hazelnut and identification of clones associated with eastern filbert blight resistance and pollen-stigma incompatibility. | European hazelnut (Corylus avellana L.) is the only economically important nut crop in the family Betulaceae. Because of its small genome size (~385 Mb / 1C), relatively short life cycle, availability of a dense linkage map, and amenability to transformation by Agrobacterium, the European hazelnut could serve as a model plant for the Betulaceae. Here we report the construction of a bacterial artificial chromosome (BAC) library for 'Jefferson' hazelnut using the cloning enzyme MboI and the vector ... | 2011 | 21936690 |
| Simulated environmental criticalities affect transglutaminase of Malus and Corylus pollens having different allergenic potential. | Increases in temperature and air pollution influence pollen allergenicity, which is responsible for the dramatic raise in respiratory allergies. To clarify possible underlying mechanisms, an anemophilous pollen (hazel, Corylus avellana), known to be allergenic, and an entomophilous one (apple, Malus domestica), the allergenicity of which was not known, were analysed. The presence also in apple pollen of known fruit allergens and their immunorecognition by serum of an allergic patient were prelim ... | 2011 | 21847612 |
| extensive remodeling of the pseudomonas syringae pv. avellanae type iii secretome associated with two independent host shifts onto hazelnut. | hazelnut (corylus avellana) decline disease in greece and italy is caused by the convergent evolution of two distantly related lineages of pseudomonas syringae pv. avellanae (pav). we sequenced the genomes of three pav isolates to determine if their convergent virulence phenotype had a common genetic basis due to either genetic exchange between lineages or parallel evolution. | 2012 | 22800299 |
| comparative genomic analyses of multiple pseudomonas strains infecting corylus avellana trees reveal the occurrence of two genetic clusters with both common and distinctive virulence and fitness traits. | the european hazelnut (corylus avellana) is threatened in europe by several pseudomonads which cause symptoms ranging from twig dieback to tree death. a comparison of the draft genomes of nine pseudomonas strains isolated from symptomatic c. avellana trees was performed to identify common and distinctive genomic traits. the thorough assessment of genetic relationships among the strains revealed two clearly distinct clusters: p. avellanae and p. syringae. the latter including the pathovars avella ... | 2015 | 26147218 |
| the skin prick test - european standards. | skin prick testing is an essential test procedure to confirm sensitization in ige-mediated allergic disease in subjects with rhinoconjunctivitis, asthma, urticaria, anapylaxis, atopic eczema and food and drug allergy. this manuscript reviews the available evidence including medline and embase searches, abstracts of international allergy meetings and position papers from the world allergy literature. the recommended method of prick testing includes the appropriate use of specific allergen extract ... | 2013 | 23369181 |
| static hot air and infrared rays roasting are efficient methods for aflatoxin decontamination on hazelnuts. | aflatoxins are a group of secondary metabolites produced by members of aspergillus section flavi that are dangerous to humans and animals. nuts can be potentially contaminated with aflatoxins, often over the legal threshold. food processes, including roasting, may have different effects on mycotoxins, and high temperatures have proven to be very effective in the reduction of mycotoxins. in this work, two different roasting methods-traditional static hot air roasting and infra-red rays roasting-w ... | 2017 | 28230792 |
| efficacy of condensed tannins against larval hymenolepis diminuta (cestoda) in vitro and in the intermediate host tenebrio molitor (coleoptera) in vivo. | natural anti-parasitic compounds in plants such as condensed tannins (ct) have anthelmintic properties against a range of gastrointestinal nematodes, but for other helminths such effects are unexplored. the aim of this study was to assess the effects of ct from three different plant extracts in a model system employing the rat tapeworm, hymenolepis diminuta, in its intermediate host, tenebrio molitor. an in vitro study examined infectivity of h. diminuta cysticercoids (excystation success) isola ... | 2015 | 25468673 |
| influence of catchment vegetation on mercury accumulation in lake sediments from a long-term perspective. | organic matter (om) cycling has a large impact on the cycling of mercury (hg) in the environment. hence, it is important to have a thorough understanding on how changes in, e.g., catchment vegetation - through its effect on om cycling - affect the behavior of hg. to test whether shifts in vegetation had an effect on hg-transport to lakes we investigated a sediment record from herrenwieser see (southern germany). this lake has a well-defined holocene vegetation history: at ~8700years bp corylus a ... | 2015 | 26363145 |
| leaf gas exchange performance and the lethal water potential of five european species during drought. | establishing physiological thresholds to drought-induced mortality in a range of plant species is crucial in understanding how plants respond to severe drought. here, five common european tree species were selected (acer campestre l., acer pseudoplatanus l., carpinus betulus l., corylus avellana l. and fraxinus excelsior l.) to study their hydraulic thresholds to mortality. photosynthetic parameters during desiccation and the recovery of leaf gas exchange after rewatering were measured. stem vul ... | 2016 | 26614785 |
| nondestructive estimation of anthocyanins and chlorophylls in anthocyanic leaves. | the anthocyanin and chlorophyll contents in leaves provide valuable information about the physiological status of plants. thus, there is a need for accurate, efficient, and practical methodologies to estimate these biochemical parameters of vegetation. in this study, we tested the performance and accuracy of several nondestructive, reflectance-based techniques for estimating anthocyanin and chlorophyll contents in leaves of four unrelated species, european hazel (corylus avellana), siberian dogw ... | 2009 | 21622307 |
| light absorption by anthocyanins in juvenile, stressed, and senescing leaves. | the optical properties of leaves from five species, norway maple (acer platanoides l.), cotoneaster (cotoneaster alaunica golite), hazel (corylus avellana l.), siberian dogwood (cornus alba l.), and virginia creeper (parthenocissus quinquefolia (l.) planch.), differing in pigment composition and at different stages of ontogenesis, were studied. anthocyanin absorption maxima in vivo, as estimated with spectrophotometry of intact anthocyanic versus acyanic leaves and microspectrophotometry of vacu ... | 2008 | 18796701 |
| suitability of different pollen as alternative food for the predatory mite amblyseius swirskii (acari, phytoseiidae). | the predacious mite amblyseius swirskii athias-henriot is used as a biological control agent against various pests in greenhouses. pollen offered as supplementary food is reported to improve their fast establishment and performance. however, the nutritional suitability of different pollens for a. swirskii is not sufficiently known yet. pollens of 21 plant species were offered to the mites as exclusive food during preimaginal development. preimaginal mortality and developmental time have been ass ... | 2013 | 23670826 |
| [distribution of endogenous inhibitors of the respiratory chain in plants]. | 70 phosphate buffer extracts of various plant tissues of 40 species as well as of 2 bacteria were tested for the presence of endogenous inhibitors of the respiratory chain. electron transfer particles (etp) from beef heart mitochondria served as test object. the nadh oxidase (spectrophotometrically) and the succinate oxidase activity (manometrically) were measured. inhibitory activities could be detected in all the plant species tested, but there were quantitative differences by orders of magnit ... | 1975 | 1233839 |
| factors for converting hazelnut (corylus avellana l) into black alder (alnus glutinosa yalt.) plantations. | hazelnut plantations, which are a major source of income for the villagers in the eastern black sea region are notable to provide sufficient income to the villagers due to price fluctuations and sudden falls witnessed in recent years. alternative investments in place of hazelnut cultivation are being investigated in order to prevent migration to urban areas and to increase the welfare of the rural population in the region. black alder plantation investments have been assessed as one of the most ... | 2009 | 20120499 |
| validation of a method using queenless bombus terrestris micro-colonies for testing the nutritive value of commercial pollen mixes by comparison with queenright colonies. | the nutritive value of pollen blends purchased by bumble bee producers from beekeepers is a key factor of successful mass rearing. we have already devised a method for quality ranking of pollen diets. it was a 1-mo bioassay using queenless micro-colonies of three callow workers (bombus terrestris l.; apidae: bombinae). in the current study, we tested three pollen diets through the micro-colony method and compared the results to the development of queenright colonies supplied with the same diets. ... | 2008 | 19133450 |
| isolation of a gene encoding for a class iii peroxidase in female flower of corylus avellana l. | hazelnut is a monoecious species characterized by mid-winter blooming and sporophytic incompatibility. the molecular mechanisms at the basis of the female flower development and of the pollen-stigma interaction are little known, although pollination in this species is a critical factor to ensure good yield. differential display technique was used to study genes expressed during the female flower development, comparing styles before emergence from the bud and styles at full bloom. the full-length ... | 2012 | 22362313 |
| elemental composition of edible nuts: fast optimization and validation procedure of an icp-oes method. | an inductively coupled plasma-optical emission spectrometry method for the speedy simultaneous detection of 19 elements in edible nuts (walnuts: juglans nigra; almonds: prunus dulcis; hazelnuts: corylus avellana; brazil nuts: bertholletia excelsa; cashews: anacardium occidentalle; pistachios: pistacia vera; and peanuts: arachis hypogaea) available on the serbian markets, was optimized and validated through the selection of instrumental parameters and analytical lines free from spectral interfere ... | 2015 | 25298065 |
| multiplex dna detection of food allergens on a digital versatile disk. | the development of a dna microarray method on a digital versatile disk (dvd) is described for the simultaneous detection of traces of hazelnut ( corylus avellana l.), peanut ( arachis hypogaea ), and soybean ( glycine max ) in foods. after dna extraction, multiplex pcr was set up using 5'-labeled specific primers for cor a 1, ar h 2, and le genes, respectively. digoxin-labeled pcr products were detected by hybridization with 5'-biotinylated probes immobilized on a streptavidin-modified dvd surfa ... | 2012 | 22126645 |
| commercial lateral flow devices for rapid detection of peanut (arachis hypogaea) and hazelnut (corylus avellana) cross-contamination in the industrial production of cookies. | lateral flow devices (lfds) are qualitative immunochromatographic tests for the rapid and specific detection of target analytes. we investigated commercially available lfds for their ability to detect potentially allergenic peanut and hazelnut in raw cookie dough and chocolate, two important food matrices in the industrial production of cookies. each three commercial lfds for the detection of hazelnut and peanut were performed according to the manufacturers' instructions. all lfds had comparably ... | 2009 | 19280180 |
| the responses of stomata and leaf gas exchange to vapour pressure deficits and soil water content : i. species comparisons at high soil water contents. | the responses of photosynthesis, transpiration and leaf conductance to changes in vapour pressure deficit were followed in well-watered plants of the herbaceous species, helianthus annuus, helianthus nuttallii, pisum sativum and vigna unguiculata, and in the woody species having either sclerophyllous leaves, arbutus unedo, nerium oleander and pistacia vera, or mesomorphic leaves, corylus avellana, gossypium hirsutum and prunus dulcis. when the vapour pressure deficit of the air around a single l ... | 1984 | 28311208 |
| the shifting phenological landscape: within- and between-species variation in leaf emergence in a mixed-deciduous woodland. | many organisms rely on synchronizing the timing of their life-history events with those of other trophic levels-known as phenological matching-for survival or successful reproduction. in temperate deciduous forests, the extent of matching with the budburst date of key tree species is of particular relevance for many herbivorous insects and, in turn, insectivorous birds. in order to understand the ecological and evolutionary forces operating in these systems, we require knowledge of the factors i ... | 2017 | 28303184 |
| characterization of profilin polymorphism in pollen with a focus on multifunctionality. | profilin, a multigene family involved in actin dynamics, is a multiple partners-interacting protein, as regard of the presence of at least of three binding domains encompassing actin, phosphoinositide lipids, and poly-l-proline interacting patches. in addition, pollen profilins are important allergens in several species like olea europaea l. (ole e 2), betula pendula (bet v 2), phleum pratense (phl p 12), zea mays (zea m 12) and corylus avellana (cor a 2). in spite of the biological and clinical ... | 2012 | 22348028 |
| the decomposition of branch-wood in the canopy and floor of a mixed deciduous woodland. | the pattern of decomposition of branch-wood greater than 2 cm diameter is described for a one hectare site at meathop wood, cumbria, based on studies carried out as part of the ibp between 1967 and 1972. three phases of decomposition are recognised. following the death of branches in the canopy and their colonisation by fungi, decomposition proceeded at an average annual loss rate of about 8.4%. wood at branch-fall had on average lost about 40% of its original dry weight. on the forest floor the ... | 1976 | 28309258 |
| phenological research of climate changes in the north part of lithuania by the phenological garden of šiauliai university. | šiauliai university botanical garden is a member of the international phenological garden network since 2005. it is the only one botanical garden in the east europe that participated in the programme. in 2015, 18 species were observed. for research, data of 14 plants was used. the aim of this study is to estimate the responsiveness of the species of plants of the phenological garden to annual and monthly precipitation and temperature of the air. the main variables in this investigation were grow ... | 2017 | 27604576 |
| nonvolatile chemical cues affect host-plant ranking by gravid polygonia c-album females. | in a multiple-choice test, the preference of egg-laying polygonia c-album (comma butterfly) females was studied for oviposition on plants bearing surrogate leaves treated with crude methanol extracts obtained from leaves of seven host-plant species: humulus lupulus, urtica dioica, ulmus glabra, salix caprea, ribes nigrum, corylus avellana, and betula pubescens. the ranking order of surrogate leaves treated with host-plant extracts corresponded well to that reported on natural foliage, except r. ... | 2012 | 22486046 |
| new tuber species found in poland. | new information from a survey of truffles carried out in southern part of poland in september 2007 is presented. the fruit bodies of tuber aestivum, t. excavatum, t. rufum and one unidentified tuber sp. were found. the soil chemistry of the five t. aestivum sites was analysed. our inventory showed that t. aestivum prefers the mixed forest with host-trees such as: quercus robur, corylus avellana, carpinus betulus, fagus silvaticus and tilia cordata. selection of local inocula of t. aestivum for t ... | 2008 | 18414906 |
| determination of 21 organochlorine pesticides in tree leaves using solid-phase extraction clean-up cartridges. | a method to determine 21 organochlorine pesticides (ocps) in tree leaves [chestnut (castanea sativa), hazel (corylus avellana), oak (quercus robur) and walnut tree (juglans regia)] based on microwave-assisted extraction (mae) followed by solid-phase extraction (spe) clean-up is described. after extraction with hexane:acetone (50:50), four different sorbents (florisil, tandem florisil + alumina, silica and envi-carb) were assayed for the clean-up step. pesticides were eluted with 5 ml of hexane:e ... | 2004 | 15641355 |
| fifteen-year phenological plant species and meteorological trends in central italy. | the present study was carried out in a phenological garden in central italy that contains vegetative clones of shrubs and trees common to several international phenological gardens, such as cornus sanguinea l.; corylus avellana l.; ligustrum vulgare l.; robinia pseudoacacia l.; salix acutifolia willd. and sambucus nigra l. vegetative plant growth monitoring was carried out weekly using common international keys: bbch07, bud break and leaf unfolding; bbch19, young unfolded leaf; bbch91, adult lea ... | 2014 | 23435513 |
| link between defoliation and light treatments on root vitality of five understory shrubs with different resistance to insect herbivory. | understory shrubs are frequently attacked by insect herbivores. however, very little is known regarding possible interactions between light condition, defoliation (d) and fine root vitality (% live roots) and metabolic activity, and whether different plant strategies (compensation, trade-off and equilibrium) to defoliation depend on individual species light requirements. to explore the response of roots to such conditions, an experiment was established in which we experimentally removed 50% of l ... | 2010 | 20624813 |
| fruit position within the canopy affects kernel lipid composition of hazelnuts. | the aim of this research was to study the variability in kernel composition within the canopy of hazelnut trees. | 2017 | 28374458 |
| influence of different hazelnut cultivars on some demographic characteristics of the filbert aphid (hemiptera: aphididae). | the filbert aphid myzocallis coryli (goeze) is a serious pest of hazelnut in north america, italy, spain, and turkey. to evaluate the resistance of hazelnut to this insect, aphids were reared on five major cultivars ('tombul,' 'palaz,' 'çakıldak,' 'foşa,' and 'mincane') under laboratory conditions. the developmental times of preadult and adult stages, total longevity, reproduction, and life table parameters were analyzed according to age-stage, two-sex life table theory, in which the stage diffe ... | 2017 | 28334379 |
| viability-reducing activity of coryllus avellana l. extracts against human cancer cell lines. | the increasing rate of cancer incidence has encouraged the search for novel natural sources of anticancer compounds. the presence of small quantities of taxol and taxanes in corylus avellana l. has impelled new potential applications for this plant in the field of biomedicine. in the present work, the cell viability-reducing activity of stems and leaves from three different hazel trees was studiedagainst three human-derived cancer cell lines (hela, hepg2 and mcf-7). both leaf and stem extracts s ... | 2017 | 28258038 |
| ftir analysis of molecular composition changes in hazel pollen from unpolluted and urbanized areas. | in this study, the effect of urbanization and environmental pollution on qualitative (structural) and quantitative changes of the corylus avellana (hazel) pollen was investigated using scanning electron microscopy, fourier transform infrared (ftir) spectroscopy and curve-fitting analysis of amide i profile. the obtained spectroscopic results show significant variations in the fraction of proteins in the hazel pollen, which probably depend on various degrees of anthropopression. our results sugge ... | 2017 | 28255194 |
| hazelnut (corylus avellana l.) shells extract: phenolic composition, antioxidant effect and cytotoxic activity on human cancer cell lines. | hazelnut shells, a by-product of the kernel industry processing, are reported to contain high amount of polyphenols. however, studies on the chemical composition and potential effects on human health are lacking. a methanol hazelnut shells extract was prepared and dried. our investigation allowed the isolation and characterization of different classes of phenolic compounds, including neolignans, and a diarylheptanoid, which contribute to a high total polyphenol content (193.8 ± 3.6 mg of gallic ... | 2017 | 28208804 |
| the cyclic diarylheptanoid asadanin as the main contributor to the bitter off-taste in hazelnuts (corylus avellana l.). | activity-guided fractionation and taste dilution analysis (tda), followed by lc-ms/ms, lc-tof-ms, and 1d/2d-nmr spectroscopy, led to the identification of the cyclic diarylheptanoid asadanin exhibiting a human bitter recognition threshold of 13 μmol/kg, as the major inducer of the sporadic bitter off-taste of hazelnut kernels (corylus avellana l.). sensory analysis of hazelnut samples from two origins (ordu/2013 and akçakoca/2014) and from cimiciato-infected hazelnut kernels, followed by lc-ms/m ... | 2017 | 28166631 |
| food targeting: geographical origin determination of hazelnuts (corylus avellana) by lc-qqq-ms/ms-based targeted metabolomics application. | a targeted metabolomics lc-esi-qqq-ms application for geographical origin discrimination based on 20 nonpolar key metabolites was developed, validated according to accepted guidelines and used for quantitation via stable isotope labeled internal standards in 202 raw authentic hazelnut samples from six countries (turkey, italy, georgia, spain, france, and germany) of harvest years 2014 and 2015. multivariate statistics were used for detection of significant variations in metabolite levels between ... | 2017 | 28068089 |
| a new pollen-derived microcarrier for pantoprazole delivery. | plant-derived carriers have emerged as promising materials for drug encapsulation. especially, sporopollenin microcapsules extracted from diverse pollen species have been proved to be effective drug carriers due to their biocompatibility, homogeneity in size, resistance to harsh chemical conditions and high thermal stability. here in this study, sporopollenin microcapsules were isolated successfully from the pollens of a common tree (corylus avellana, the european hazelnut) and used as a carrier ... | 2017 | 27987792 |
| food fingerprinting: metabolomic approaches for geographical origin discrimination of hazelnuts (corylus avellana) by uplc-qtof-ms. | ultraperformance liquid chromatography quadrupole time-of-flight mass spectrometry (uplc-qtof-ms) was used for geographical origin discrimination of hazelnuts (corylus avellana l.). four different lc-ms methods for polar and nonpolar metabolites were evaluated with regard to best discrimination abilities. the most suitable method was used for analysis of 196 authentic samples from harvest years 2014 and 2015 (germany, france, italy, turkey, georgia), selecting and identifying 20 key metabolites ... | 2016 | 27933993 |
| effects of hazelnut consumption on blood lipids and body weight: a systematic review and bayesian meta-analysis. | hazelnuts are rich in monounsaturated fatty acids and antioxidant bioactive substances: their consumption has been associated with a decreased risk of cardiovascular disease events. a systematic review and a meta-analysis was performed to combine the results from several trials and to estimate the pooled (overall) effect of hazelnuts on blood lipids and body weight outcomes. specifically, a bayesian random effect meta-analysis of mean differences of δ-changes from baseline across treatment (mdδ) ... | 2016 | 27897978 |
| chemical, mechanical and sensory monitoring of hot air- and infrared-roasted hazelnuts (corylus avellana l.) during nine months of storage. | roasted hazelnuts can be consumed as whole nuts, or as an ingredient in the confectionary and bakery industries and are highly appreciated for their typical taste, aroma and crunchy texture. in this work, two hazelnut types (tgt, ordu) from two harvests were roasted using two different systems (hot air, infrared) at different time/temperature combinations, and the evolution of oxidative stability, the total phenolic content (tpc), the antioxidant capacity, the mechanical and acoustic properties ... | 2017 | 27664651 |
| fatty acid content profile and main constituents of corylus avellana kernel in wild type and cultivars growing in italy. | the kernel composition (moisture, ash, protein, carbohydrate, calories, fat, monounsaturated and polyunsaturated fatty acids) of two hazelnut (corylus avellana l.) cultivars ('tonda gentile trilobata' and 'tonda gentile romana') and of two wild types growing in different climatic conditions (north-west and central italy) was evaluated. the main kernel component was fatty acid (65.9 ± 1.8%, mean value), and the most abundant fatty acid in hazelnut was oleic acid (c18:1) (83.5 ± 1.0%, mean value). ... | 2017 | 27605244 |