a participatory assessment of ecosystem services and human wellbeing in rural costa rica using photo-voice. | human well-being is intricately connected to ecosystem services. a keystone contribution to the ecosystem service literature has been the millennium ecosystem assessment, ma, (ecosystems and human well-being: a framework for assessment, island press, washington, dc; 2003, 2005). much of the work on ecosystem services to date has focused on the assessment and classification of environmental functions. the need for inclusion of community perspectives in ecosystem assessments has been widely recogn ... | 2012 | 22402931 |
adsorption and kinetic behavior of recombinant multifunctional xylanase in hydrolysis of pineapple stem and bagasse and their hemicellulose for xylo-oligosaccharide production. | a recombinant multifunctional xylanase (rmfxase) was utilized to hydrolyze xylan in pineapple stems and bagasse. the feasibility of using rmfxase and the two agricultural by-products for producing xylo-oligosaccharides was demonstrated. adsorption dynamics showed that lignin and cellulose delayed the adsorption equilibrium. the adsorption data fit the langmuir-type adsorption isotherm. the extent of hydrolysis was quantified by measuring the reducing and total sugars in substrate-rmfxase complex ... | 2012 | 22342034 |
population dynamics of earthworms in relation to soil physico-chemical parameters in agroforestry systems of mizoram, india. | earthworm population dynamics was studied in two agroforestry systems in the tropical hilly terrain of mizoram, north-east india, over a period of 24 months, from july 2002 to june 2004. two sites of agroforestry situated at sakawrtuichhun (skt) and pachhunga university college (puc) campus, aizawl, having pineapple as the main crop, were selected for detail studies on population dynamics. five of the total twelve species of earthworm reported from the state were recorded in the study sites. the ... | 2011 | 22319875 |
cloning and expression analysis of a pistillata homologous gene from pineapple (ananas comosus l. merr). | pistillata (pi)-like genes are crucial regulators of flowering in angiosperms. a homologue of pi, designated as acpi (genbank accession number hq717796), was isolated from pineapple cultivar comte de paris by reverse transcriptase polymerase chain reaction (rt-pcr) and rapid amplification of cdna ends (race). the cdna sequence of acpi is 907 bp in length and contains an open reading frame of 594 bp, which encodes a protein of 197 amino acids. the molecular weight was 2.29 kda and the isoelectric ... | 2012 | 22312303 |
[development of cereal bar with pineapple skin]. | the cereal bars are multi-component products consisting of cereals, dried fruit and syrup binder and may be added to the consumable parts of fruits and vegetables which usually are not exploited and have high nutritional value, thereby reducing food waste. it was developed a jam with pineapple skin, which it was utilized in 13.5% in the cereal bar formulation. the cereal bar was sensorial evaluated and had its centesimal and mineral composition determined. the new product achieved average of 8.3 ... | 2011 | 22308949 |
real-time magnetic resonance imaging of normal swallowing. | to evaluate the use of a novel real-time magnetic resonance imaging (mri) technique for the assessment of normal swallowing dynamics. | 2012 | 22271426 |
amperometric fructose sensor based on ferrocyanide modified screen-printed carbon electrode. | the first fructose sensor using a commercial screen-printed ferrocyanide/carbon electrodes (spfce) is reported here. the ferrocyanide is included in the carbon ink of the commercial screen-printed carbon electrode. the immobilization of enzyme d-fructose dehydrogenase (fdh) was carried out in an easy way. an aliquot of 10μl fdh was deposited on the electrode surface and left there until dried (approximately 1h) at room temperature. the sensor, so constructed, shows a good sensitivity to fructose ... | 2012 | 22265522 |
antioxidant, antimicrobial, 15-lox, and ages inhibitions by pineapple stem waste. | pineapple stem has been extensively used for bromelain extraction; however, almost no attention has been given to the waste obtained during bromelain manufacturing. in this regard, antioxidant, antimicrobial, and inhibitions against 15-lipoxygenase and advanced glycation end product formations by pineapple stem waste (psw) obtained during bromelain manufacturing process were studied. the psw had moderate bioactivities in all the performed assays. it also showed a considerable inhibition against ... | 2012 | 22260109 |
high fat meal increase of il-17 is prevented by ingestion of fruit juice drink in healthy overweight subjects. | an emerging role of il-17 in the inflammatory response associated with pathogenesis of neurodegeneration has been recently suggested. however, though diet represents a key factor in the modulation of inflammatory processes, evidence is not currently available on the nutritional regulation of il-17 in humans. in a double blind, randomized, placebo controlled, crossover study, we investigated the effect of high fat meal (hfm) on il-17 circulating levels in presence of a placebo (hfm-p) or with a f ... | 2012 | 22211683 |
development of ests and data mining of pineapple est-ssrs. | improving the quality of the non-climacteric fruit, pineapple, is possible with information on the expression of genes that occur during the process of fruit ripening. this can be made known though the generation of partial mrna transcript sequences known as expressed sequence tags (ests). ests are useful not only for gene discovery but also function as a resource for the identification of molecular markers, such as simple sequence repeats (ssrs). this paper reports on firstly, the construction ... | 2012 | 22207174 |
[consumption of fruit juices and fruit drinks: impact on the health of children and teenagers, the dentist's point of view]. | the french dietary guidelines published in 2001 recommend daily consumption of 5 portions of fruit or vegetable. despite this advice, the consumption of fruit in france, especially in the north of france, is low, whereas sale of 100% fruit juices, fruit drinks, and fruit-flavored beverages is increasing. the impact of contemporary changes in beverage patterns on dental caries has received less attention than the impact on childhood obesity. nevertheless, the cariogenic potential of soft drinks i ... | 2012 | 22206891 |
bromelain-induced apoptosis in gi-101a breast cancer cells. | bromelain is a proteolytic enzyme extracted from the stems and the immature fruits of pineapple that was found to be antitumorigenic in different in vitro models. bromelain has been reported to promote apoptosis, particularly in breast cancer cells, with the up-regulation of c-jun n-terminal kinase and p38 kinase. our study was designed to determine if bromelain could induce apoptosis in gi-101a breast cancer cells. gi-101a cells were treated with increasing concentrations of bromelain for 24 ho ... | 2012 | 22191568 |
effect of flammulina velutipes on spent-hen breast meat tenderization. | an experiment was carried out to investigate the effects of powdered vegetable dip sauces to improve the tenderness of spent-hen breast meat. our overall purpose was to find lower-priced materials for the tenderization of spent-hen breast meat. the spent-hen breast meat was dipped into vegetable powder for 24 h at 4°c, and then the samples were analyzed. in the results for vegetable-powder treated samples, those treated with papain and pineapple had higher (p ≤ 0.05) myofibrillar fragmentation i ... | 2012 | 22184449 |
the physiology of ex vitro pineapple (ananas comosus l. merr. var md-2) as cam or c3 is regulated by the environmental conditions. | many plant species grown under in vitro controlled conditions can be used as models for the study of physiological processes. adult pineapple can display cam physiology while in vitro it functions as a c3 plant. ex vitro ananas comosus has plastic morphology and physiology, both easy to modify from c3 to cam by changing the environmental conditions. the yield of survival for a rentable propagation protocol of pineapple is closely related with the c3/cam shift and the associated physiological cha ... | 2012 | 22134875 |
effect of acidic agents on surface roughness of dental ceramics. | an increase in surface roughness of ceramics may decrease strength and affect the clinical success of ceramic restorations. however, little is known about the effect of acidic agents on ceramic restorations. the aim of this study was to evaluate the surface roughness of dental ceramics after being immersed in acidic agents. | 2011 | 22132009 |
preparative purification of bromelain (ec 3.4.22.33) from pineapple fruit by high-speed counter-current chromatography using a reverse-micelle solvent system. | the crude protein of pineapple fruit was purified by high-speed counter-current chromatography (hsccc). excellent separation was achieved after careful investigation as follows: cetyltrimethylammonium bromide (ctab) was selected to prepare the reverse micelle phase at the concentration of 0.10g/ml. the mobile phase was 0.05m sodium phosphate buffer solution, including mobile phase a (ph 9.5, containing 0.2m kcl) used for equilibration and mobile phase b (ph 7.0, containing 0.4m kcl) used for elu ... | 2011 | 25212320 |
quantification of allyl hexanoate in pineapple beverages and yogurts as a case study to characterise a source of uncertainty in dietary exposure assessment to flavouring substances. | one source of uncertainty in the estimation of dietary exposure to flavouring substances is the uncertainty in the occurrence and concentration levels of these substances naturally present or added to foodstuffs. the aim of this study was to assess the variability of concentration levels of allyl hexanoate, considered as a case study, in two main food categories to which it is often added: pineapple juice-based beverages and yogurts containing pineapple. thirty-four beverages and 29 yogurts, wit ... | 2012 | 22043838 |
glycaemic response to some commonly eaten fruits in type 2 diabetes mellitus. | it is not known which of the commonly consumed fruits in nigeria are suitable for persons with diabetes mellitus especially with regards to the attendant plasma glucose response (pgr) to consumption of such fruits. | 2011 | 21984455 |
comparison of the carbon-sequestering abilities of pineapple leaf residue chars produced by controlled combustion and by field burning. | this study was undertaken to compare the chemical properties and yields of pineapple leaf residue (plr) char produced by field burning (cf) with that produced by a partial combustion of air-dried plr at 340 °c for 3 h in a furnace (cl). higher total c, lignin content, and yield from cl as well as the presence of aromatic compounds in the fourier transform infrared spectra of the char produced from cl suggest that the cl process was better in sequestering c than was the cf process. although the c ... | 2011 | 21958525 |
content of phenolic compounds in aerial parts of chamomilla suaveolens from estonia. | the content of total polyphenols, flavonoids and coumarins in the aerial parts of pineapple weed (chamomilla suaveolens (pursh) rydb.), growing wild in estonia, was determined chromato-spectrophotometrically, and individual polyphenols were quantified using hplc-dad-ms/ms. the total content of polyphenols was rather similar in flowers (9.1-11.5%) and in whole aerial parts (8.4-10.9%) of pineapple weed. the upper one-third (1/3) and upper two-thirds (2/3) of the aerial parts contained more flavon ... | 2011 | 21922910 |
gradual surface degradation of restorative materials by acidic agents. | the aim of this study was to investigate the effect of acidic agents on surface roughness and characteristics of four restorative materials. fifty-two discs were created from each restorative material: metal-reinforced glass ionomer cement (ketac-s), resin-modified glass ionomer cement (fuji ii lc), resin composite (filtek z250), and amalgam (valiant-phd); each disc was 12 mm in diameter and 2.5 mm thick. the specimens were divided into four subgroups (n=13) and immersed for 168 hours in four st ... | 2013 | 21903509 |
evaluation of antioxidant activity and antiproliferative effect of fruit juices enriched with pycnogenol® in colon carcinoma cells. the effect of in vitro gastrointestinal digestion. | the aim of this study was to examine the effect of in vitro gastrointestinal digestion on the antioxidant and antiproliferative effect of fruit juices enriched with pycnogenol® (0.5 g/l) on a colon carcinoma cell line (caco-2). the total phenolic concentration (tpc), antioxidant activity and inhibition cell growth were studied in fresh and digested pineapple juice and red fruits juice (both enriched with pine bark extract and not). after in vitro digestion the level of detectable phenolic compou ... | 2011 | 21887808 |
modification of pineapple peel fibre with succinic anhydride for cu2+, cd2+ and pb2+ removal from aqueous solutions. | research on chemical modification of pineapple peel fibre with succinic anhydride was carried out to create a novel adsorbent for cu2+, cd2+ and pb2+ removal from aqueous solution. after pretreatment with iso-propyl alcohol and naoh, pineapple peel fibre was modified via reaction with succinic anhydride for introduction of carboxylic functional groups. the modified pineapple peel fibre was characterized with fourier transform infrared (ftir) spectroscopy and evaluated for its adsorptive ability ... | 2013 | 21879549 |
headspace-solid phase microextraction coupled to gas chromatography-combustion-isotope ratio mass spectrometer and to enantioselective gas chromatography for strawberry flavoured food quality control. | authenticity assessment of flavoured strawberry foods was performed using headspace-solid phase microextraction (hs-spme) coupled to gas chromatography-combustion-isotope ratio mass spectrometry (gc-c-irms). an authenticity range was achieved, investigating on the carbon isotope ratio of numerous selected aroma active volatile components (methyl butanoate, ethyl butanoate, hex-(2e)-enal, methyl hexanoate, buthyl butanoate, ethyl hexanoate, hexyl acetate, linalool, hexyl butanoate, octyl isovaler ... | 2011 | 21872872 |
dissolution of undigested food in a diabetic patient's stomach by drinking pineapple juice. | | 2011 | 21837823 |
extraction of pesticides, dioxin-like pcbs and pahs in water based commodities using liquid-liquid microextraction and analysis by gas chromatography-mass spectrometry. | water based samples such as flavored drinks, juices and drinking water may contain contaminants at ultra trace level belonging to different chemical classes. a novel, simple, low-cost and fast method was developed and validated for trace residue extraction of pesticides, dioxin-like pcbs and pahs from water and water based samples followed by analysis through gas chromatography (gc) coupled with time-of-flight mass spectrometry (tofms). the extraction solvent type, volume; sample volume and othe ... | 2011 | 21820665 |
quantitative analysis of essential oils in perfume using multivariate curve resolution combined with comprehensive two-dimensional gas chromatography. | the use of multivariate curve resolution (mcr) to build multivariate quantitative models using data obtained from comprehensive two-dimensional gas chromatography with flame ionization detection (gc×gc-fid) is presented and evaluated. the mcr algorithm presents some important features, such as second order advantage and the recovery of the instrumental response for each pure component after optimization by an alternating least squares (als) procedure. a model to quantify the essential oil of ros ... | 2011 | 21704766 |
characteristic aroma compounds from different pineapple parts. | characteristic aroma volatile compounds from different parts of cayenne pineapple were analyzed by headspace-solid phase microextraction (hs-spme) and gas chromatography-mass spectrometry (gc/ms). the main volatile compounds were esters, terpenes, ketones and aldehydes. the number and content of aroma compounds detected in pulp were higher than those found in core. in pulp, the characteristic aroma compounds were ethyl 2-methylbutanoate, ethyl hexanoate, 2,5-dimethyl-4-hydroxy-3(2h)-furanone (dm ... | 2011 | 21694674 |
identification of volatiles from pineapple (ananas comosus l.) pulp by comprehensive two-dimensional gas chromatography and gas chromatography/mass spectrometry. | combining qualitative data from the chromatographic structure of 2-d gas chromatography with flame ionization detection (gc×gc-fid) and that from gas chromatography-mass spectrometry (gc/ms) should result in a more accurate assignment of the peak identities than the simple analysis by gc/ms, where coelution of analytes is unavoidable in highly complex samples (rendering spectra unsuitable for qualitative purposes) or for compounds in very low concentrations. using data from gc×gc-fid combined wi ... | 2011 | 21644251 |
use of pineapple juice with gadopentetate dimeglumine as a negative oral contrast for magnetic resonance cholangiopancreatography: a multicentric study. | we evaluated the efficacy of pineapple juice with gadopentetate dimeglumine as a negative oral contrast agent for magnetic resonance cholangiopancreatography (mrcp). images were obtained before and after the intake of a negative oral contrast agent. images obtained from six different areas of the biliary tree were analyzed by three different radiologists, who were blind to the exams; scores regarding image quality were given to each area. the statistical analysis showed a significant difference ... | 2012 | 21630051 |
in silico mining for simple sequence repeat loci in a pineapple expressed sequence tag database and cross-species amplification of est-ssr markers across bromeliaceae. | a collection of 5,659 expressed sequence tags (ests) from pineapple [ananas comosus (l.) merr.] was screened for simple sequence repeats (est-ssrs) with motif lengths between 1 and 6 bp. lower thresholds of 15, 7 and 5 repeat units were used to define microsatellites of the mono-, di-, and tri- to hexanucleotide repeat type, respectively. based on these criteria, 696 ssrs were identified among 3,389 est unigenes, together representing 2,840 kb. this corresponds to an average density of one ssr e ... | 2011 | 21625993 |
flexural strength of fluorapatite-leucite and fluorapatite porcelains exposed to erosive agents in cyclic immersion. | the aim of this study was to evaluate the flexural strength of two porcelain materials (ips d.sign and ips e.max ceram) exposed to erosive agents. | 2011 | 21552708 |
aroma profile and volatiles odor activity along gold cultivar pineapple flesh. | physicochemical attributes, aroma profile, and odor contribution of pineapple flesh were studied for the top, middle, and bottom cross-sections cut along the central axis of gold cultivar pineapple. relationships between volatile and nonvolatile compounds were also studied. aroma profile constituents were determined by headspace solid-phase microextraction at 30 °c, followed by gas chromatography/mass spectrometry analysis. a total of 20 volatile compounds were identified and quantified. among t ... | 2016 | 21535624 |
postprandial glucose response to selected tropical fruits in normal glucose-tolerant nigerians. | the glycemic response to commonly eaten fruits in nigeria has not been reported. therefore, this study assessed the plasma glucose response to selected fruits in nigeria. | 2014 | 21493998 |
in vivo genotoxicity evaluation of atrazine and atrazine-based herbicide on fish carassius auratus using the micronucleus test and the comet assay. | atrazine is a selective triazine herbicide used to control broadleaf and grassy weeds mainly in corn, sorghum, sugarcane, pineapple, and other crops, and in conifer reforestation planting fields. it has been showed that atrazine is one of the most frequently detected pesticides in agricultural streams and rivers, over the past two decades. although the toxic properties of atrazine are well known, the data on the genotoxic effects of atrazine on aquatic organisms are rather scarce. thus, in the p ... | 2011 | 21443921 |
effective treatment with pineapple juice in small bowel obstruction due to phytobezoar in a gastrectomized patient. | | 2011 | 21429030 |
two phosphoenolpyruvate carboxykinases coexist in the crassulacean acid metabolism plant ananas comosus. isolation and characterization of the smaller 65 kda form. | two phosphoenolpyruvate carboxykinase (pepck, ec 4.1.1.49) isoforms of 74 and 65 kda were found to coexist in vivo in pineapple leaves, a constitutive crassulacean acid metabolism plant. the 65 kda form was not the result of proteolytic cleavage of the larger form since extraction methods reported to prevent pepck proteolysis in other plant tissues failed to yield a single immunoreactive pepck polypeptide in leaf extracts. in this work, the smaller form of 65 kda was purified to homogeneity and ... | 2011 | 21398135 |
spider-fed bromeliads: seasonal and interspecific variation in plant performance. | several animals that live on bromeliads can contribute to plant nutrition through nitrogen provisioning (digestive mutualism). the bromeliad-living spider psecas chapoda (salticidae) inhabits and breeds on bromelia balansae in regions of south america, but in specific regions can also appear on ananas comosus (pineapple) plantations and aechmea distichantha. | 2011 | 21385776 |
[analytical method of hydramethylnon in agricultural products by lc-ms/ms]. | a simple determination method of hydramethylnon in agricultural products by liquid chromatography-tandem mass spectrometry (lc-ms/ms) was developed. the sample was homogenized with phosphoric acid and extracted with acetone. an aliquot of crude extract was re-extracted with hexane and sat. nacl solution. in the case of tea leaf, solidification processing using ammonium chloride and phosphoric acid was performed before re-extraction with hexane. clean-up was performed using a silica-gel mini colu ... | 2011 | 21383534 |
effect of wine inhibitors on free pineapple stem bromelain activity in a model wine system. | the influence of potential inhibitors, naturally present in wine, on the activity of stem bromelain was investigated in order to evaluate the applicability of this enzyme for protein stabilization in white wine. bromelain proteolytic activity was tested against a synthetic substrate (bz-phe-val-arg-pna) in a model wine system after adding ethanol, sulfur dioxide (so(2)), skin, seed, and gallic and ellagic tannins at the average range of their concentration in wine. all the inhibitors of stem bro ... | 2011 | 21381670 |
influence of unclogging agents on the surface state of enteral feeding tubes. | despite standardized prevention procedures, recalcitrant clogging of enteral feeding tubes is observed, which requires recourse to varied unclogging agents. some of these agents have proved effective in routine use, but their impact on the surface state of the tube materials has never been studied. in this work, the authors tested the impact of different unclogging agents on the materials used for these tubes (polyurethane and silicone). | 2011 | 21378255 |
biosorption of basic green 4 from aqueous solution by ananas comosus (pineapple) leaf powder. | biosorption characteristics of ananas comosus (pineapple) leaf powder was investigated for decolorization of basic green 4 (bg 4), a cationic dye from its aqueous solutions employing a batch experimental set-up. parameters that influence the sorption process such as ph, biosorbent dosage, contact time, initial dye concentration and temperature were systematically studied. the optimum conditions for removal of bg 4 were found to be ph 9.0, contact time=150 min, biosorbent dosage=5.0 g l(-1), init ... | 2011 | 21349693 |
preparation of antioxidant enzymatic hydrolysates from honeybee-collected pollen using plant enzymes. | enzymatic hydrolysates of honeybee-collected pollen were prepared using food-grade proteinase and aminopeptidases entirely of plant origin. bromelain from pineapple stem was applied (8 mau/g substrate) in the first hydrolysis stage. aminopeptidase (0.05 u/g substrate) and proline iminopeptidase (0.03 u/g substrate) from cabbage leaves (brassica oleracea var. capitata), and aminopeptidase (0.2 u/g substrate) from chick-pea cotyledons (cicer arietinum l.) were involved in the additional hydrolysis ... | 2011 | 21318132 |
effect of naturally acidic agents on microhardness and surface micromorphology of restorative materials. | this study investigated the titratable acidity and erosive potential of acidic agents on the microhardness and surface micromorphology of four restorative materials. | 2011 | 21311608 |
use of dispersive liquid-liquid microextraction for the determination of carbamates in juice samples by sweeping-micellar electrokinetic chromatography. | dispersive liquid-liquid microextraction (dllme) has been proposed for the extraction and preconcentration of 12 carbamate pesticides in juice samples, followed by their determination by micellar electrokinetic chromatography with diode-array detection. to improve sensitivity, an on-capillary sample concentration method based on sweeping has been developed. also, separations were performed in an extended light path fused-silica capillary; the separation buffer consisted of 100 mm borate and 50 m ... | 2011 | 21279629 |
surface characteristic changes of dental ceramics after cyclic immersion in acidic agents and titratable acidity. | the potential erosive effect of acidic food, sour fruits and drinks on all-ceramic restorations used in dentistry has not been clearly documented. surface characteristic changes have been evaluated and compared for disc-shaped specimens (diameter 12.0 mm and thickness 2.0 mm) of fluorapatite-leucite and fluorapatite ceramics using various storage agents (deionized water, citrate buffer solution, pineapple juice, green mango juice, cola soft drink and 4% acetic acid). immersion in pineapple juice ... | 2010 | 21265437 |
pesticide residue analysis of fruit juices by lc-ms/ms direct injection. one year pilot survey. | for this work, thirteen types of fruit juices (orange, pineapple, peach, apple, multifruit, mango, strawberry, tomato, pear, mandarin, grape, banana and grapefruit) were selected to develop an analytical method for the analysis of 53 pesticides by direct injection in lc-ms/ms. the preparation of the samples was very simple: an aliquot of the juice was centrifuged and it was ten-times diluted prior to analysis, which allowed reducing considerably the time and cost of the analyses. besides, diluti ... | 2011 | 21238751 |
online intelligent controllers for an enzyme recovery plant: design methodology and performance. | this paper focuses on the development of intelligent controllers for use in a process of enzyme recovery from pineapple rind. the proteolytic enzyme bromelain (ec 3.4.22.4) is precipitated with alcohol at low temperature in a fed-batch jacketed tank. temperature control is crucial to avoid irreversible protein denaturation. fuzzy or neural controllers offer a way of implementing solutions that cover dynamic and nonlinear processes. the design methodology and a comparative study on the performanc ... | 2010 | 21234106 |
growth of byssochlamys nivea in pineapple juice under the effect of water activity and ascospore age. | the study of thermal resistant mould, including byssochlamys nivea, is of extreme importance since it has been associated with fruit and fruit products. the aim of this work is to analyze the influence of water activity (aw) and ascospore age (i) on the growth of byssochlamys nivea in pineapple juice. mold growth was carried out under different conditions of water activity (aw) (0.99, 0.96, 0.95, 0.93, 0.90) and ascospore age (i) (30, 51, 60, 69, 90 days). growth parameters as length of adaptati ... | 2011 | 24031622 |
modulatory effect of pineapple peel extract on lipid peroxidation, catalase activity and hepatic biomarker levels in blood plasma of alcohol-induced oxidative stressed rats. | to investigate the ability of the methanolic extract of pineapple peel to modulate alcohol-induced lipid peroxidation, changes in catalase activities and hepatic biochemical marker levels in blood plasma. | 2011 | 23569717 |
polyphenol oxidase and peroxidase expression in four pineapple varieties (ananas comosus l.) after a chilling injury. | pineapple internal browning (ib) is a chilling injury that produces enzymatic browning associated with flesh translucency. pineapple biodiversity allowed the investigation of how polyphenol oxidase (ppo) and peroxidase (pod) activities with their different isoforms are involved in the ib mechanism. fruits of four varieties that expressed ib symptoms differently, smooth cayenne (scay) and the hybrids md2, flhoran 41 (flh 41), and flhoran 53 (flh 53), were stressed by cold. the susceptible varieti ... | 2011 | 21133422 |
food allergy in ghanaian schoolchildren: data on sensitization and reported food allergy. | epidemiological data on food allergy are scarce in african countries. we studied the prevalence of food sensitization in ghanaian schoolchildren. | 2011 | 21109750 |
simultaneous analysis of amino acids and carboxylic acids by capillary electrophoresis-mass spectrometry using an acidic electrolyte and uncoated fused-silica capillary. | a simple, low-cost capillary electrophoresis-mass spectrometry (ce-ms) method is demonstrated for the simultaneous analysis of amino acids and small carboxylic acids (glycerate, lactate, fumarate, succinate, malate, tartrate, citrate, iso-citrate, cis-aconitate, and shikimate). all ce-ms experiments were performed using a single uncoated fused-silica capillary and with a single separation electrolyte, formic acid. for ce polarity, the ce inlet was set as the anode, and the ms side was set as the ... | 2010 | 21080676 |
improved characterization of the botanical origin of sugar by carbon-13 snif-nmr applied to ethanol. | until now, no analytical method, not even isotopic ones, had been able to differentiate between sugars coming from c4-metabolism plants (cane, maize, etc.) and some crassulacean acid metabolism plants (e.g., pineapple, agave) because in both cases the isotope distributions of the overall carbon-13/carbon-12 and site-specific deuterium/hydrogen isotope ratios are very similar. following recent advances in the field of quantitative isotopic carbon-13 nmr measurements, a procedure for the analysis ... | 2010 | 21028824 |
stability of pycnogenol® as an ingredient in fruit juices subjected to in vitro gastrointestinal digestion. | the enrichment of fruit juices with concentrated polyphenolic extracts is an expedient strategy to compensate possible phenolic loss through gastrointestinal processing. pycnogenol, a standardised procyanidin-rich extract from pine bark, has been proposed as a potential candidate for polyphenol enrichment of foods. in this study the effects of in vitro digestion on the phenolic profile of fruit juices enriched with pycnogenol were investigated. | 2011 | 20872816 |
modification of pineapple peel fiber as metal ion adsorbent through reaction with succinic anhydride in pyridine and dimethyl sulfoxide solvents. | reactions between saponified pineapple peel fiber (sppf) and succinic anhydride were performed in refluxed pyridine and dimethyl sulfoxide to obtain modified pineapple peel fiber in pyridine (mppf-py) and modified pineapple peel fiber in dimethyl sulfoxide at room temperature (mppf-dmrt) and at 70 degrees c (mppf-dm70) as novel metal ionic adsorbents. the modified pineapple peel fibers were characterized by fourier transform infrared (ftir) and x-ray diffraction (xrd). the mppf-py, mppf-dmrt, an ... | 2010 | 20853752 |
pineapple bromelain induces autophagy, facilitating apoptotic response in mammary carcinoma cells. | bromelain, from pineapple, possesses potent anticancer effects. we investigated autophagic phenomenon in mammary carcinoma cells (estrogen receptor positive and negative) under bromelain treatment and also illustrated the relationship between autophagy and apoptosis in mcf-7 cells. mcf-7 cells exposed to bromelain showed delayed growth inhibitory response and induction of autophagy, identified by monodansylcadaverine localization. it was succeeded by apoptotic cell death, evident by sub-g1 cell ... | 2013 | 20848558 |
sulfur-containing constituents and one 1h-pyrrole-2-carboxylic acid derivative from pineapple [ananas comosus (l.) merr.] fruit. | two sulfur-containing compounds, (s)-2-amino-5-((r)-1-carboxy-2-((e)-3-(4-hydroxy-3-methoxyphenyl)allylthio)ethyl-amino)-5-oxopentanoic acid (1) and (s)-2-amino-5-((r)-1-(carboxymethylamino)-3-((e)-3-(4-hydroxyphenyl)allylthio)-1-oxopropan-2-ylamino)-5-oxopentanoic acid (2), and one 1h-pyrrole-2-carboxylic acid derivative, 6-(3-(1h-pyrrole-2-carbonyloxy)-2-hydroxypropoxy)-3,4,5-trihydroxy-tetrahydro-2h-pyran-2-carboxylic acid (3), together with eighteen known phenolic compounds, were isolated fr ... | 2010 | 20843530 |
degradability of fluorapatite-leucite ceramics in naturally acidic agents. | this study was conducted to evaluate the titratable acidity and effect of naturally acidic agents on the surface microhardness, elemental composition, and surface morphology of fluorapatite-leucite ceramics. one hundred and ten ceramic disks (ips d.sign), 12.0 mm in diameter and 2.0 mm in thickness, were fabricated. before immersion, the baseline data of vickers microhardness and elemental composition were recorded. four groups were immersed in acidic agents (citrate buffer solution, green mango ... | 2010 | 20827032 |
reduction of voc emission from natural flours filled biodegradable bio-composites for automobile interior. | various experiments, such as the thermal extract (te) method, field and emission cell (flec) method and 20 l small chamber, were performed to examine the total volatile organic compound (tvoc) emissions from bio-composites. the tvoc of neat poly(lactic acid) (pla) was ranged from 0.26 mg/m(2)h to 4.11 mg/m(2)h with increasing temperature. for both pla bio-composites with pineapple flour and destarched cassava flour, the temperature increased from 0.30 mg/m(2)h to 3.72 mg/m(2)h and from 0.19 mg/m ... | 2011 | 20739121 |
[determination of amitrole in agricultural products by high performance liquid chromatography-tandem mass spectrometry]. | a high performance liquid chromatography-tandem mass spectrometry method (hplc-ms/ms) was developed for the analysis of amitrole residues in agricultural products. the samples were extracted by 25% acetone for wheat, fish, pork and liver samples, 1% acetic acid-25% acetone for maize and peanut samples, 1% acetic acid solution for honeysuckle, the powder of ginger, the powder of bunge prickly ash and tea leaves samples, 1% acetic acid solution-dichloromethane for apple, pineapple, spinach, carrot ... | 2010 | 20549983 |
chemical examination of citrus sinensis flavedo variety pineapple. | phytochemical examination of citrus sinensis flavedo var. pineapple resulted in the isolation of six compounds characterized as tetracosane, ethyl pentacosanoate, tetratriacontanoic acid, tangertin, beta-sitosteryl-beta-d-glucoside and 3,5,4'-trihydroxy-7,3'-dimethoxy flavanone 3-o-beta-glucoside. of these 3,5,4'-trihydroxy-7,3'-dimethoxy flavanone 3-o-beta-glucoside is a hitherto unreported compound. | 2009 | 20376223 |
glycemic index and glycemic load of selected chinese traditional foods. | to determine the glycemic index (gi) and glycemic load (gl) values of chinese traditional foods in hong kong. | 2010 | 20333793 |
influence of modified atmosphere packaging on volatile compounds and physicochemical and antioxidant attributes of fresh-cut pineapple (ananas comosus). | the effects of modified atmosphere packaging on volatile compound content and physicochemical and antioxidant attributes of gold cultivar fresh-cut pineapples were assessed throughout storage at 5 degrees c. fresh-cut pineapple pieces were packed under lo (low oxygen, 12% o(2), 1% co(2)), air (20.9% o(2)) and ho (high oxygen, 38% o(2)) headspace atmospheres. methyl butanoate, methyl 2-methylbutanoate, and methyl hexanoate were the most abundant volatiles regardless of the packaging atmosphere an ... | 2010 | 20225823 |
the effect of acidic agents on surface ion leaching and surface characteristics of dental porcelains. | acidic food and sour fruits and drinks have been investigated for their destructive effects on enamel. however, their effect on porcelain restorations has not been widely examined. | 2010 | 20188237 |
composition of essential oil of aerial parts of chamomilla suaveolens from estonia. | variations in the essential oil composition of aerial parts of pineapple weed (chamomilla suaveolens (pursh) rydb.) growing wild in estonia, were determined using gc/fid and gc/ms. forty-four components were identified, representing over 90% of the total oil. nine compounds have not been mentioned in the literature before. the principal biologically active compounds in c. suaveolens oils were (z)-en-yne-dicycloether (17.0-40.7%), (e)-beta-farnesene (19.5-32.2%), geranyl isovaleriate (8.4-18.4%), ... | 2010 | 20184038 |
nitric oxide mediates the hormonal control of crassulacean acid metabolism expression in young pineapple plants. | genotypic, developmental, and environmental factors converge to determine the degree of crassulacean acid metabolism (cam) expression. to characterize the signaling events controlling cam expression in young pineapple (ananas comosus) plants, this photosynthetic pathway was modulated through manipulations in water availability. rapid, intense, and completely reversible up-regulation in cam expression was triggered by water deficit, as indicated by the rise in nocturnal malate accumulation and in ... | 2010 | 20147491 |
screening of trichoderma isolates as a biological control agent against ceratocystis paradoxa causing pineapple disease of sugarcane. | in this study, dual culture, poison agar, and direct methods were used to assess the ability of trichoderma virens imi-392430, t. pseudokoningii imi-392431, t. harzianum imi-392432, t. harzianum imi-392433, and t. harzianum imi-392434 to control ceratocystis paradoxa, which causes the pineapple disease of sugarcane. the highest percentage inhibition of radial growth (pirg) values were observed with t. harzianum imi-392432 using two dual culture methods, 63.80% in method i and 80.82% in method ii ... | 2009 | 23983548 |
determination of the insecticide imidacloprid in fruit juices using micellar high-performance liquid chromatography. | a simple and reliable hplc method was developed to determine imidacloprid, a chloronicotinyl insecticide that has a highly specific affinity to the nicotinic acetylcholine receptor of insects, above its permissible limit of consumption in fruit juices (orange, apple, and a mixture of pineapple and pear). samples were injected directly into a kromasil c18 column, without any pretreatment step, using the micellar mobile phase 0.10 m sodium dodecyl sulfate and 2.5% (v/v) propanol buffered at ph 7 a ... | 2012 | 19916392 |
complementary therapies: your questions answered. use of pineapple for induction of labour. | | 2009 | 19899285 |
factors affecting migration of vanillin from chitosan/methyl cellulose films. | the diffusion kinetics and factors affecting the migration of vanillin from chitosan/methyl cellulose (chi/mc) films into water, cantaloupe juice (cj), pineapple juice (pj), and citrate buffer adjusted to ph values of 3.5, 5, and 6.5 were studied. vanillin was incorporated into the chi/mc films to provide an inhibitory effect against microorganisms. initial vanillin concentration in the films, temperature, and ph of extracting solvent impacted the migration behavior of vanillin. the diffusion co ... | 2009 | 19895459 |
chemical durability and microhardness of dental ceramics immersed in acidic agents. | to evaluate the microhardness and surface elemental compositions of ceramics immersed in acidic agents. | 2010 | 19878041 |
matrix effects observed during pesticides residue analysis in fruits by gc. | the influence of the sample matrix in the gc-electron-capture detection analysis of the pesticides dimethoate, diazinon, chlorothalonil, parathion methyl and fenitrothion in fruits samples has been studied. experiments have been carried out where the pesticide responses in standard solutions prepared in selected solvent were compared with their response when present in apple, mango, papaya, banana, pineapple and melon extracts. the presence of matrix effects (mes) and their extent were shown to ... | 2009 | 19877144 |
oriented cell division as a response to cell death and cell competition. | the imaginal disc epithelia that give rise to the adult ectoderm of drosophila can compensate to produce normal adult organs after damage. we looked at the local response to cell death by using two genetic methods to elevate cell death rates. during cell competition, sporadic cell death occurs predictably along the boundaries between populations of competing wild-type and "minute" cells (m/+). boundaries between m/+ and wild-type populations show an unusual degree of mixing, associated with mito ... | 2009 | 19853449 |
formation of shaped barium sulfate-dye hybrids: waste dye utilization for eco-friendly treatment of wastewater. | owing to the present complexity and difficulty of concentrated dye wastewater treatment, this work aimed to synthesize a reproducible waste-sorbing material for the treatment of wastewater by forming the dye-conjugating complex hybrid. | 2010 | 19844752 |
thermoperiod affects the diurnal cycle of nitrate reductase expression and activity in pineapple plants by modulating the endogenous levels of cytokinins. | nitrate reductase (nr, ec 1.6.6.1) activity in higher plants is regulated by a variety of environmental factors and oscillates with a characteristic diurnal rhythm. in this study, we have demonstrated that the diurnal cycle of nr expression and activity in pineapple (ananas comosus, cv. smooth cayenne) can be strongly modified by changes in the day/night temperature regime. plants grown under constant temperature (28 degrees c light/dark) showed a marked increase in the shoot nr activity (nra) d ... | 2009 | 19832938 |
vicker's microhardness and energy dispersive x-ray analysis of fluorapatite-leucite and fluorapatite ceramics cyclically immersed in acidic agents. | this study evaluated the microhardness and elemental composition of various ceramics immersed in acidic agents. one hundred and five discs of fluorapatite-leucite (ips d.sign) and fluorapatite ceramics (ips e.max ceram) were randomly divided into 7 groups of 15 each. five groups were alternately immersed in acidic agents (citrate buffer solution, pineapple juice, green mango juice, cola soft drink and 4% acetic acid) for 30 min and deionized water for 5 min in 7 cycles at 37 degrees c. two group ... | 2009 | 19776513 |
structure, stability, and thermochemistry of the fullerene derivatives c(64)x(6) (x = h, f, cl). | the geometrical structures, electronic properties, and stabilities of the unconventional fullerene derivatives c(64)x(6) (x = h, f, cl) have been systematically studied by the first-principle calculations based on the density functional theory. the fullerene derivatives 1911(2)-c(64)x(6) generated from the pineapple-shaped c(64)x(4) are predicted to possess the lowest energies. the other two x atoms are added to the carbon atoms with the highest local strain assessed by the pyramidalization angl ... | 2009 | 19757780 |
an extended ae-rich n-terminal trunk in secreted pineapple cystatin enhances inhibition of fruit bromelain and is posttranslationally removed during ripening. | phytocystatins are potent inhibitors of cysteine proteases and have been shown to participate in senescence, seed and organ biogenesis, and plant defense. however, phytocystatins are generally poor inhibitors of the cysteine protease, bromelain, of pineapple (ananas comosus). here, we demonstrated that pineapple cystatin, accys1, inhibited (>95%) stem and fruit bromelain. accys1 is a unique cystatin in that it contains an extended n-terminal trunk (ntt) of 63 residues rich in alanine and glutama ... | 2009 | 19648229 |
the prevalence of food hypersensitivity in young adults. | rising prevalence of food hypersensitivity (fhs) and severe allergic reactions to foods have been reported in the last decade. however, little is known on the prevalence in young adults. this study estimated the prevalence of fhs to the most common allergenic foods in an unselected population of young adults. we investigated a cohort of 1272 young adults 22 years of age by questionnaire, skin prick test (spt) and histamin release (hr) followed by oral challenge to the most common allergenic food ... | 2009 | 19594854 |
detection of urease in the cell wall and membranes from leaf tissues of bromeliad species. | urea is an important nitrogen source for some bromeliad species, and in nature it is derived from the excretion of amphibians, which visit or live inside the tank water. its assimilation is dependent on the hydrolysis by urease (ec: 3.5.1.5), and although this enzyme has been extensively studied to date, little information is available about its cellular location. in higher plants, this enzyme is considered to be present in the cytoplasm. however, there is evidence that urease is secreted by the ... | 2009 | 19508368 |
the pineapple upside-down liver cake. | | 2009 | 19479784 |
screening of antiproliferative effect of aqueous extracts of plant foods consumed in méxico on the breast cancer cell line mcf-7. | we evaluated the antiproliferative effect of aqueous extracts of 14 plant foods consumed in mexico on the breast cancer cell line mcf-7. the plant foods used were avocado, black sapote, guava, mango, prickly pear cactus stems (called nopal in mexico, cooked and raw), papaya, pineapple, four different cultivars of prickly pear fruit, grapes and tomato. β-carotene, total phenolics and gallic acid contents and the antioxidant capacity, measured by the ferric reducing/antioxidant power and the 2,2-d ... | 2009 | 19468947 |
removal of methylene blue from aqueous solution by adsorption onto pineapple leaf powder. | the ability of an unconventional bio-adsorbent, pineapple leaf powder (plp) for the adsorption of methylene blue (mb) from aqueous solution was studied. it was observed that intra-particle diffusion was involved in the adsorption process and that the kinetic data fitted well with a pseudo-second-order equation. fitting parameters revealed that the rate of adsorption increased with decrease in dye concentration and decrease in ionic strength while the mixing speed did not have a significant effec ... | 2009 | 19447547 |
[the characteristic analysis of several mineral contents in chinese orange juice]. | a study was carried out on the contents of mineral elements such as k, ca, na, and mg in seven different orange varieties, namely pineapple orange, hamlin, trovita, jincheng, 1,232 tangor, olinda valencia and delta valencia, by flame atomic absorption spectrometry. the results indicated that the content sequence of different nutritional elements was k > mg > ca > na, with a range of 1,233.75-1,866.23, 77.51-167.15, 49.32-125.29 and 1.22-9.26 mg x l(-1) respectively. the range scale of the four e ... | 2009 | 19385253 |
pineapple and banana pectins comprise fewer homogalacturonan building blocks with a smaller degree of polymerization as compared with yellow passion fruit and lemon pectins: implication for gelling properties. | pectins are viewed as multiblock cobiopolymers of different pectic polysaccharides, notably, homogalacturonan (hg) and rhamnogalacturonan i (rg i). furthermore, on the basis of hgs isolated from different (pectins from) dicot cell walls, hg is supposed to have an average degree of polymerization (dp) of approximately 100 irrespective of the plant source. to validate or invalidate these suppositions, pectins from both monocot (pineapple and banana) and dicot (yellow passion fruit and lemon) cell ... | 2009 | 19260678 |
soft fruit traceability in food matrices using real-time pcr. | food product authentication provides a means of monitoring and identifying products for consumer protection and regulatory compliance. there is a scarcity of analytical methods for confirming the identity of fruit pulp in products containing soft fruit. in the present work we have developed a very sensible qualitative and quantitative method to determine the presence of berry dnas in different food matrices. to our knowledge, this is the first study that shows the applicability, to soft fruit tr ... | 2009 | 22253987 |
antioxidant capacity of infant fruit beverages: influence of storage and in vitro gastrointestinal digestion. | the total antioxidant capacity of three beverages based on fruit juice, milk and cereals, intended for infants and young children up to 3 years of age was evaluated by two methods trolox equivalent antioxidant capacity and oxygen radical absorption capacity. | 2015 | 19132262 |
evaluation of genetic variability in micropropagated propagules of ornamental pineapple [ananas comosus var. bracteatus (lindley) coppens and leal] using rapd markers. | the objective of the present study was to evaluate the genetic variability in micropropagated plantlets of ornamental pineapple, after the fourth period of subculture. the basal culture medium consisted of ms salts, vitamins, 3% sucrose, liquid formulation, supplemented with 6-benzylaminopurine (bap) at concentrations of 0.125, 0.25, 0.5, 1.0, and 2.0 mg/l. the addition of bap influenced the occurrence of genetic variation revealed using random amplified polymorphic dna (rapd) markers. of a tota ... | 2008 | 19048488 |
biophenols from agro-industrial wastes. | large quantities of agro-based liquid wastes are produced every year and their disposal is often a problem for industries. in light of that, in this study prudent effort was done to screen the agro-industrial wastes - pineapple waste (paw) and palm oil mill effluent (pome) for valuable biophenols product. three different solvents; ethanol, acetone and distilled water were screened in order to enhance the process. all experiments were performed using fixed process conditions of solid to solvent r ... | 2008 | 19025008 |
absolute side-chain structure at position 13 is required for the inhibitory activity of bromein. | bromelain isoinhibitor (bromein), a cysteine proteinase inhibitor from pineapple stem, has a unique double-chain structure. the bromein precursor protein includes three homologous inhibitor domains, each containing an interchain peptide between the light and heavy chains. the interchain peptide in the single-chain precursor is immediately processed by bromelain, a target proteinase. in the present study, to clarify the essential inhibitory site of bromein, we constructed 44 kinds of site-directe ... | 2008 | 18948264 |
the importance and provision of oral hygiene in surgical patients. | the provision of mouth care on the general surgical ward and intensive care setting has recently gained momentum as an important aspect of patient care. oropharyngeal morbidity can cause pain and disordered swallowing leading to reluctance in commencing or maintaining an adequate dietary intake. on the intensive care unit, aside from patient discomfort and general well-being, oral hygiene is integral to the prevention of ventilator-associated pneumonia. chlorhexidine (0.2%) is widely used to dec ... | 2008 | 18947816 |
fusarium-induced diseases of tropical, perennial crops. | abstract the world's oldest ecosystems are found in the tropics. they are diverse, highly evolved, but barely understood. this and subsequent papers describe diseases of tropical, perennial plants that are caused by fusarium spp. many of these are economically significant, difficult to manage, and of scientific interest. some represent coevolved patho-systems (e.g., panama disease, tracheomycosis of coffee, fusariosis of pineapple, and fusarium wilt of oil palm), whereas others may be new-encoun ... | 2006 | 18943183 |
multi-walled carbon nanotubes as efficient solid-phase extraction materials of organophosphorus pesticides from apple, grape, orange and pineapple fruit juices. | multi-walled carbon nanotubes (mwcnts) have been used for the first time as solid-phase extraction (spe) sorbents for the extraction of eight organophosphorus pesticides (i.e. ethoprophos, diazinon, chlorpyriphos-methyl, fenitrothion, malathion, chlorpyriphos, fenamiphos and buprofezin) from different commercial fruit juices (i.e. apple, grape, orange and pineapple). the developed method, which involves spe and direct gas chromatography with nitrogen phosphorus detection analysis, is very fast, ... | 2008 | 18849040 |
the effect of different hormones and incubation periods on in vitro proliferation of pineapple (ananas comosus l.) merr cv. smooth cayenne) shoot-tip culture. | seven different hormone treatments, namely 6-benzylaminopurine (bap) at 2, 3 mg l(-1) was applied singly and in combination with indole acetic acid (iaa) at 0.18, 0.8 and 1.8 mg l(-l), bap at 3.3 mg l(-l) in combination with iaa at 1.8 and 3.3 mg l(-l) and triple combination of bap at 2.3, iaa at 1.8 and gibberellic acid (ga3) at 1.0 mg l(-1) were tested, over four different incubation periods of 30, 45, 60 and 75 days, for their effect in the proliferation and growth of smooth cayenne pineapple ... | 2008 | 18817160 |
preparation of ferulic acid from agricultural wastes: its improved extraction and purification. | ferulic acid (fa) is a phenolic antioxidant present in plants, which is widely used in the food and cosmetic industry. in the present study, various agricultural wastes such as maize bran, rice bran, wheat bran, wheat straw, sugar cane baggasse, pineapple peels, orange peels, and pomegranate peels were screened for the presence of esterified fa (efa). among the sources screened, maize bran was found to contain the highest amount of efa. pineapple peels, orange peels, and pomegranate peels were a ... | 2008 | 18707110 |
trace metal levels in fruit juices and carbonated beverages in nigeria. | trace metal levels in selected fruit juices and carbonated beverages purchased in lagos, nigeria were determined using atomic absorption spectrophotometer (unicam model 969) equipped with solaar 32 windows software. fruit juices analysed were grape, pineapple, apple, orange, lemon juices and their brand names were used. some carbonated drinks were also evaluated for metal levels. trace metals investigated were cr, cu, pb, mn, ni, zn, sn, fe, cd and co. trace metal contents of fruit juices were f ... | 2009 | 18704729 |
evaluation of crude sesquiterpenoid extract of phellinus fastuosus as a natural preservative. | it has been revealed that the use of synthetic food preservatives has variety of various side effects and hence search of safe and effective natural preservative has become a need. with the afore said objective the present study to screen the possibility of using sesquiterpenoid extract of local folk mushroom phellinus fastuosus as food preservative was undertaken. microbial growth inhibition by sesquiterpenoid extract of phellinus was evaluated in the media with natural ingredient such as milk ... | 2013 | 18697727 |
the effects of concentrate added to pineapple (ananas comosus linn. mer.) waste silage in differing ratios to form complete diets, on digestion, excretion of urinary purine derivatives and blood metabolites in growing, male, thai swamp buffaloes. | four, male, growing thai swamp buffaloes (197 +/- 5.3 kg and all 1 year old) were used to evaluate the effects of concentrate added to pineapple waste silage in differing ratios, to form a complete diet, studying in vivo digestion, the rate of passage, microbial protein synthesis and blood metabolites. animals were fed ad libitum with 4 diets, using four combinations of pineapple waste silage (p) and concentrate (c), in the proportions (on a dry matter basis) of 0.8:0.2 (p80:c20), 0.6:0.4 (p60:c ... | 2009 | 18649000 |
multiresidue method for fast determination of pesticides in fruit juices by ultra performance liquid chromatography coupled to tandem mass spectrometry. | a new analytical method for the simultaneous determination of 90 pesticides in fruit juices by ultra performance liquid chromatography coupled to tandem mass spectrometry (uplc-ms/ms) has been developed and validated. extraction was performed with acetonitrile, applying quechers methodology, and the extracts were analyzed without any further clean-up step, providing better results than solid phase extraction (spe) procedure. before chromatographic step, extracts were diluted with water (1:1) in ... | 2008 | 18585265 |