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Results 301 - 350 of 607
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Hernández-Orte Purificación - - 2002
Synthetic solutions containing amino acids, sugar, water, and yeast nutrients have been fermented by Saccharomyces cerevisiae, and the volatile composition of the fermented media has been analyzed by GC. Eleven amino acid compositions imitating the characteristic amino acid profile of 11 different grape varieties were tested. Significant differences in the ...
O'Dowd Colin D - - 2002
Aerosol particles produced over forested areas may affect climate by acting as nuclei for cloud condensation, but their composition (and hence the chemical species that drive their production) remains an open question. Here we show, to our knowledge for the first time, that these newly formed particles (3-5 nm in ...
Stivarius M R - - 2002
The impact of 82°C hot water (HW) or 5% lactic acid (LA) applied aerobically or by vacuum to beef trimmings prior to grinding on Salmonella Typhimurium (ATCC 1769NR; ST), Escherichia coli (ATCC 11775; EC), coliform (CO), aerobic plate count (APC), instrumental color and sensory characteristics of ground beef through simulated ...
Oka A - - 2002
Two hundred ninety-three Japanese Black Wagyu steers derived from 34 sires were used to investigate genetic effects on the fatty acid composition of carcass fat. All steers were fed identical diets for 365 d and slaughtered at similar ages. If the percentage of genetic contribution of sire A, B, or ...
Stivarius M R - - 2002
Antimicrobial effects of selected acidulants in a ground beef production system were studied. Lean beef trimmings were inoculated with Escherichia coli (EC) and Salmonella Typhimurium (ST) then treated with either 5% acetic acid, 5% gluconic acid (GA) or 5% trisodium citrate and then compared with an untreated control (C). Trimmings ...
Peyron F - - 2002
The sterol and fatty acid compositions of four amphotericin B-resistant and of two amphotericin B-susceptible Candida lusitaniae clinical isolates were determined. A flow cytofluorometric susceptibility test (FCST) with a membrane potential-sensitive cationic dye was used as a complement to the conventional method for selecting the isolates. Compared to susceptible isolates, ...
Wolff Robert L - - 2002
The seed fatty acid (FA) compositions of Abietoids (Abies, Cedrus, Hesperopeuce, Keteleeria, Pseudolarix, and Tsuga) are reviewed in the present study in conclusion to our survey of Pinaceae seed FA compositions. Many unpublished data are given. Abietoids and Pinoids (Pinus, Larix, Picea, and Pseudotsuga)-constituting the family Pinaceae-are united by the ...
Reeves James B JB - - 2002
The objective of this work was to examine the role of ash in the compositional analysis of dried dairy manures. Ninety-nine dairy manures obtained from Connecticut, Maryland, New York, Pennsylvania and Virginia were dried at 60 degrees C, and ground to 20 mesh. Samples were analyzed for neutral and acid ...
Sorimachi K - - 2002
The free amino acid compositions in archaeobacteria, eubacteria, protozoa, blue-green alga, green alga, slime mold, plants and mammalian cells were analyzed, to investigate whether changes in their free amino acid compositions reflect biological evolution. Cell homogenates were treated with 80-90% ethanol to separate cellular proteins and free amino acids contained ...
Gardener M C - - 2001
Thirty species of flowering plants were analyzed for floral nectar amino acid composition. High-performance liquid chromatography (HPLC) was used in conjunction with AccQtag derivatization to produce accurate and precise data. For any one species, the total concentration of amino acids varies greatly (average coefficient of variation 0.65), but composition is ...
Sorimachi K - - 2001
Previous studies showed that the cellular amino acid composition obtained by amino acid analysis of whole cells, differs such as eubacteria, protozoa, fungi and mammalian cells. These results suggest that the difference in the cellular amino acid composition reflects biological changes as the result of evolution. However, the basic pattern ...
Siddhuraju P - - 2001
Seeds of the Indian tribal pulses Canavalia gladiata (red and brown varieties), C. ensiformis and C. virosa were analysed for their physical characters, proximate composition, minerals, amino acid composition, dietary fibre constituents, starch fractions, fatty acid profiles and various antinutritional and/or toxic factors. Among the different species/varieties of Canavalia, the ...
De Maeyer E A - - 2001
The composition of the degradable glasses used in commercial dental glass-ionomer cements determines their leaching behavior and hence the properties of the cement. The objective of the present study was to assess if the composition and leaching in acetic acid solutions are reflected in the x-ray diffraction characteristics of these ...
Orwa J A - - 2001
Preparative-scale separation of colistin sulphate bulk sample was carried out on a preparative poly(styrene-divinylbenzene) stationary phase. Isocratic elution with acetonitrile-sodium sulphate solution (0.7% m/v; pH adjusted to 2.5 with TFA) - water (16:50:34, % v/v/v) was carried out at a flow rate of 4.0 ml min(-1). Six colistin components were ...
Risbud M - - 2001
The aim of the study was to prepare composites of poly(butylene terepthalate)/wollastonite (PBT/W), evaluate their properties and in vitro biocompatibility. Composites of PBT with wollastonite in two different proportions, viz. 70/30 (PW-30), 50/50 (PW-50) were prepared. The DSC studies indicate marginal changes in the melting behavior and enhanced crystallization in ...
Wong M - - 2001
The purpose of this study was to investigate factors which enhanced the compressive properties of alginate/chondrocyte constructs. Firstly, we studied the effect of biochemical composition (high, mid and low guluronic acid content) and sterilization method on alginate properties. Secondly, we studied the biosynthetic characteristics of chondrocytes in three different alginate ...
Wolff R L - - 2001
Following our previous review on Pinus spp. seed fatty acid (FA) compositions, we recapitulate here the seed FA compositions of Larix (larch), Picea (spruce), and Pseudotsuga (Douglas fir) spp. Numerous seed FA compositions not described earlier are included. Approximately 40% of all Picea taxa and one-third of Larix taxa have ...
Arienti G - - 2001
The semen of several mammals contains vesicles of different composition and origin. We have recently reported on the presence of lipoprotein vesicles in stallion semen. To a certain extent, these resemble human prostasomes, but differ from them in amount and composition. These horse-semen prostasome-like vesicles may be important, not only ...
Thangadurai D - - 2001
Seeds of Galactia longifolia Benth. (Fabaceae), locally known as Kaattukollu in Tamil language, used as food by Malayali tribals in the Kolli hills of Namakkal District, Tamil Nadu in South India were analysed for proximate composition, total (true) seed proteins, amino acid composition, fatty acid composition, minerals and antinutritional factors. ...
Kreil D P - - 2001
The global amino acid compositions as deduced from the complete genomic sequences of six thermophilic archaea, two thermophilic bacteria, 17 mesophilic bacteria and two eukaryotic species were analysed by hierarchical clustering and principal components analysis. Both methods showed an influence of several factors on amino acid composition. Although GC content ...
el-Dengawy R A - - 2001
Quail meats have many advantages and superiority one the other species of poultry. This study was planned to throw plenty of light on gross chemical composition, lipid fractions, fatty acids composition, amino acids composition, of thigh and breast of male and female wild quail meat as well as the microbiological ...
Sann A I - - 2001
The effect of germination, cowpea fortification and fermentation on the chemical and amino acid composition of ogi-baba, a Nigerian fermented sorghum gruel was investigated. The lowest protein value of 1.4% was obtained in the traditionally prepared sample, while samples prepared from germinated, fortified sorghum had 13%. The ash ranged from ...
Sutcliffe I C - - 2000
Lipoglycans such as the mycobacterial lipoarabinomannans (LAM) are important cell envelope components of actinomycetes. To further our understanding of the diversity of these enigmatic macromolecules the lipoglycan composition of Dietzia maris has been investigated. Phenol-water extraction and hydrophobic interaction chromatography were used to purify a lipoglycan which was unusually small ...
Marais J P - - 2000
An acetone/water extract of the fodder legume Onobrychis viciifolia afforded arbutin, kaempferol, quercetin, rutin, afzelin, the branched quercetin-3-(2(G)-rhamnosylrutinoside), the amino acid L-tryptophan, the inositol (+)-pinitol, and relatively high concentrations of sucrose (ca. 35% of extractable material). Acid-catalyzed cleavage of the condensed tannins with phloroglucinol afforded catechin, epicatechin and gallocatechin as ...
Bell J G - - 2000
The fatty acid compositions of red blood cell (RBC) phospholipids from a patient with autistic spectrum disorder (ASD) had reduced percentages of highly unsaturated fatty acids (HUFA) compared to control samples. The percentage of HUFA in the RBC from the autistic patient was dramatically reduced (up to 70%) when the ...
Sidhu R S - - 2000
Glyphosate-tolerant (Roundup Ready) corn line GA21 has been developed by genetic modification to tolerate glyphosate, the active ingredient in Roundup herbicide. The purpose of this study was to evaluate the compositional and nutritional safety of corn line GA21 compared to that of conventional corn. Compositional analyses were conducted to measure ...
Padilla F C - - 2000
Cocoa butter is the most important fat used in the confectionery and chocolate industries. The main objective of the present study was to determine the physical and chemical characteristics of cocoa butter extracted from hybrid cultivars belonging to the germplasm bank of the Fondo Nacional de Investigaciones Agropecuarias (National Foundation ...
Yap A U - - 2000
OBJECTIVE: The aim of this study was to investigate the release of methacrylic acid from four commercial dental composite restoratives (Silux Plus (3M), Z100 (3M), Ariston pHc (Vivadent) and Surefil (Dentsply)). METHODS: Three specimen disks (10(0.2) mm in diameter and 2(0.2) mm thick), were prepared for each material using custom-made ...
Gil A M - - 2000
Liquid-state NMR spectroscopy was used to follow the compositional changes in mango juice during ripening, whereas MAS and HR-MAS techniques enabled resolved (13)C and (1)H NMR spectra of mango pulps to be recorded. Spectral assignment enabled the identification of several organic acids, amino acids, and other minor components, and the ...
Whitney S E - - 2000
Cellulose-based composite materials containing xyloglucans or mannan-based polysaccharides have been shown to possess organisational features with many characteristics similar to primary plant cell walls. We have tested the effects of a typical alpha-expansin (CsExp1) on these composites using two different mechanical assays. We show that CsExp1 induces very rapid extension ...
Dubois-Brissonnet F - - 2000
The influence of temperature and physiological state on fatty acid profiles of cell membranes of a gram-negative bacteria was studied in this work. It has been shown that fatty acid composition is largely modified by these two parameters. Lipids play an important role in the composition and the function of ...
Guerin-Mechin L - - 2000
The involvement of cell membrane fatty acids in resistance of Pseudomonas aeruginosa to Quaternary Ammonium Compounds (QACs) stresses was investigated. The strain was grown in a medium with increasing concentrations of different biocides: two QACs, and two non-QACs. In the presence of two QACs only, the strain was able to ...
Klisch M - - 2000
Cultures of the marine dinoflagellate Gyrodinium dorsum have been exposed to polychromatic radiation (photosynthetically active radiation and UV) from a solar simulator for up to 72 h. Different irradiance spectra in the ultraviolet are produced by inserting cut-off filters between lamp and samples. The mycosporine-like amino acid (MAA) content and ...
Upton C - - 2000
The amino acid composition and pI values were calculated for the predicted proteins of a series of complete poxvirus genomes. Many of the vaccinia virus (strain Copenhagen) minor ORFs, thought not to be functional genes, were found to have significantly more or less of several amino acids than a set ...
Flaherty C - - 1999
Lipoarabinomannans are well characterised lipoglycans present in the cell envelopes of mycobacteria and closely related bacteria. To define further the distribution of these lipoglycans we have investigated the mycolic acid-containing bacterium Gordonia rubropertincta and, by analysis of carbohydrate composition and antigenic cross-reactivity, demonstrated the presence of a lipoarabinomannan-like lipoglycan. A ...
Pelka M - - 1999
The toxic effects of mercury derived from amalgam fillings have been a focus of controversy in Germany during the last 25 years. As alternatives to amalgam, composites are used widely to restore anterior and posterior permanent teeth. This study quantifies the amount of TEGDMA and methacrylic acid that can be ...
Cromwell G L - - 1999
A cooperative research study involving members of a regional committee (North Central Regional Committee on Swine Nutrition [NCR-42]) was conducted to assess the variability in nutrient composition (DM, CP, Ca, P, Se, and amino acids) of corn and soybean meal from 16 sources (15 states, mostly in the Midwest) and ...
Guérin-Méchin L - - 1999
The role of membrane fatty acid composition in the resistance of Pseudomonas aeruginosa ATCC 15442 to the bactericidal activity of Quaternary Ammonium Compounds (QACs) was investigated. The strain was grown in a medium with increasing concentrations of a QAC, benzyldimethyltetradecylammonium chloride (C14) and two non-QACs, sodium dichloroisocyanurate and tri-sodium phosphate. ...
Taylor N B - - 1999
The compositional analyses and safety assessment of glyphosate-tolerant soybeans (GTS) were previously described. These analyses were extensive and included addressing the potential effects on seed composition from the genetic modification. Detailed compositional analyses established that GTS, which had not been treated with glyphosate, were comparable to the parental soybean line ...
Adeyeye E I - - 1999
The proximate and fatty acids compositions of dehulled African yam bean (Sphenostylis stenocarpa, Hochst ex A. Rich. Harms) flour were reported. The crude protein values ranged from 20.18 +/- 0.02 to 25.78 +/- 0.05 g/100 g; the ether extract values ranged from 1.93 +/- 0.05 to 10.18 +/- 0.04 g/100 ...
Resnick R B - - 1999
The heel fat pad is organized, both in structure and in composition, to bear the stresses and strains of normal activities and to permit pain-free weightbearing. The fatty acid composition of heel pads in 11 patients with rheumatoid arthritis, a disease process frequently associated with heel fat pad atrophy, was ...
Drake S R - - 1999
Gala apples and Bartlett pears were harvested over two crop seasons at different maturities and growing sources then stored in refrigerated storage alone and in controlled atmosphere storage (1% O(2) plus 1% CO(2) or 2% O(2) plus 3% CO(2)). Before and after storage of 45 or 90 days, the juice ...
Diogo A - - 1999
Numerical analysis of fatty acid methyl ester (FAME) profiles of 199 isolates and 76 reference strains, belonging to all validly described species of the genus Legionella that can be cultured in laboratory media, was used to differentiate between the species of this genus. With the exception of the strains that ...
Smith D B - - 1999
Despite being the most intensively studied part of the hepatitis C virus genome, our understanding of the function of the hypervariable region (HVR) at the NH2-terminus of the E2 protein remains very limited. During chronic infection the HVR usually changes over time, with changes usually mirrored by those of HVR-specific ...
Böttcher H - - 1999
The release of biocides (benzoic, sorbic and boric acids) incorporated into modified silica films was investigated with respect to composite structure. The liberation rates of the embedded acids are proportional to the biocide-to-silica ratio and are changed by adding soluble polymers such as hydroxypropylcellulose. The rates of liberation correlate with ...
Burkhart C N - - 1999
Flash pyrolysis-gas chromatography/mass spectrometry was used to assess the chemical composition of the head louse's nit sheath. The pyrolyzate of the female insect's secretions, which form a cement-like cylinder holding the egg onto the hair, is dominated by amino acid derivatives and fatty acids. No chitin-specific compounds were detected in ...
Méchin L - - 1999
The role of membrane fatty acid composition in the resistance of Pseudomonas aeruginosa ATCC 15442 to the bactericidal activity of didecyldimethyl ammonium bromide (DDAB) was investigated. In this study, the strain was sub-cultured in a medium with increasing DDAB concentrations. After adaptation, Ps. aeruginosa was able to grow until the ...
Chou K C - - 1999
The pair-coupled amino acid composition is introduced to predict the secondary structure contents of a protein. Compared with the existing methods all based on singlewise amino acid composition as defined in a 20D (dimensional) space, this represents a step forward to the consideration of the sequence coupling effect. The test ...
Verra F - - 1999
Many malarial antigens contain extensive arrays of tandemly repeated short amino acid sequences, and much of the antibody response induced by malaria infections is directed against these repeats. Indeed, it has been hypothesized that these repeats function to elicit a relatively ineffective T-cell-independent antibody response by the host. In order ...
Chang H M - - 1999
Duck eggs were pickled in alkali for 20 days to prepare Pidan. The extent of the degradation of compositional amino acids, the formation of lysinoalanine (LAL) in Pidan, and the relationship between the formation of LAL and the racemization values of D-serine and D-aspartic acid in Pidan albumen during the ...
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