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Results 451 - 500 of 720
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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 ...
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 ...
Resnick R B RB Hospital for Joint Diseases-Orthopaedic Institute, New York, New York, USA. - - 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 ...
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 ...
Casem M L - - 1999
The silks from the cob weaving spider, Latrodectus hesperus (black widow), have been examined with the goal of expanding our understanding of the relationship between the protein structure and mechanical performance of these unique biomaterials. The scaffolding, dragline and inner egg case silks each appear to be distinct fibers based ...
Cochet N - - 1999
Alpine marmots (Marmota marmota) were maintained on a laboratory diet, and the fatty acid composition of gonadal and subcutaneous white adipose tissues (WAT) was studied during a yearly cycle. Fatty acids (FA) released from isolated adipocytes were also identified after stimulation of in vitro lipolysis. Analysis of the FA composition ...
Kuti J O - - 1999
Proximate composition and mineral content of raw and cooked leaves of two edible tree spinach species (Cnidoscolus chayamansa and C. aconitifolius), known locally as 'chaya', were determined and compared with that of a traditional green vegetable, spinach (Spinicia oleraceae). Results of the study indicated that the edible leafy parts of ...
Viswanathan M B - - 1999
Seeds of Teramnus labialis (L.) Spreng. (Fabaceae), used as food by Malayali tribals in the Kollihills of Salem District, Tamil Nadu in South India, were investigated for their nutritional value. These seeds were analyzed for proximate composition, total (true) seed proteins, seed protein fractions, amino acid composition, fatty acid composition, ...
Sorimachi K - - 1999
Comparison of the amino acid composition of cell-proteins using 17 amino acids has been used to investigate the biological evolution of organisms such as bacteria, blue-green alga, green alga, fungi, slime mold, protozoa and vertebrates. The degree of difference in the amino acid ratios between any two groups reflects the ...
Perrin S - - 1999
In this communication we offer data to suggest that the zebrafish swimbladder may provide a simple model of elastin injury and repair which is amenable to genetic analysis and pertinent to lung physiology. In situ hybridization of zebrafish embryos illustrated that elastin gene expression is evident in the developing gut ...
Broun P - - 1998
Higher plants exhibit extensive diversity in the composition of seed storage fatty acids. This is largely due to the presence of various combinations of double or triple bonds and hydroxyl or epoxy groups, which are synthesized by a family of structurally similar enzymes. As few as four amino acid substitutions ...
Pramanik J - - 1998
The amino acid composition of proteins and the fatty acid composition of the cell membranes were measured in Escherichia coli growing exponentially in batch culture on glucose, succinate, glycerol, pyruvate, and acetate, and growing under continuous culture conditions on glucose at dilutions rates equivalent to the growth rates of the ...
Helversen O v. - - 1998
Male bushcrickets transfer large spermatophores of up to 40% of male body mass to the females during mating. These large nuptial gifts are later consumed by the female and have been shown to affect the size and number of eggs laid after mating in some species. The composition of the ...
Schaller G - - 1998
The viscotoxin composition of the vegetative part of V. album determined by HPLC was found to be different in the three European subspecies. The characteristic differences in viscotoxin composition were not affected by the host species and by the harvesting seasons investigated. However, host-dependent differences in the total amount of ...
Ishida Y - - 1998
Pyrolysis-gas chromatography (Py-GC) combined with on-line methylation was applied to a correlation analysis between the distributions of fatty acid components in the lipids of zooplankter individuals and those of ingested algae using principal component analysis (PCA). Py-GC in the presence of organic alkali, tetramethylammonium hydroxide (TMAH), was used to estimate ...
Attin T - - 1998
STATEMENT OF PROBLEM: Polyacid-modified composites are recommended for use in lesions that are subjected to toothbrushing abrasion and acidic challenges, such as cervical lesions. There is little information whether these materials are able to withstand degradation due to erosive attacks and toothbrushing abrasion. PURPOSE: This study evaluated the resistance of ...
Lee S Y - - 1998
The aim of this study was to analyse the leached moieties of dental composites after storage in ethanol and organic acids of plaque and further evaluate the resultant effect on the diametral tensile strength (DTS) of the composites. Three commercial composites were used: Bis-GMA-based Z100, Bis-GMA/UDMA-based Heliomolar, and Bis-MPEPP-based Marathon ...
Kong K H - - 1998
Three tyrosinase isozymes were purified to electrophoretic homogeneity from pine needles. The molecular weight of the three isozymes (P1, P2 and P3) were approximately 65,000, 50,000 and 45,000, and the pI values were 6.2, 5.9 and 5.3, respectively. The three isozymes have a number of common properties. These include amino ...
Goodrich-Tanrikulu M - - 1998
Fatty acid composition was determined during several stages of sexual development in Neurospora crassa. Triacylglycerol was the predominant acyl lipid in cultures undergoing sexual development. The absolute amounts of triacylglycerol in fertilized cultures varied over time, in contrast to control (unfertilized or mock-fertilized) cultures, in which the amount of triacylglycerol ...
Garcia G E - - 1998
A small, heat stable chromophore extracted from mosquitoes has recently been implicated as the signal that induces mating of Plasmodium, the malaria parasite. We have used high resolution electrospray mass spectrometry to determine that this gamete activation factor (GAF) has a m/z = 205.0450, suggesting a molecular species composition of ...
Mahan D C - - 1998
The amino acid composition of the body components (carcass, hair, whole blood, and a composite of the other body tissues) were determined from a total of 81 crossbred pigs at 10 weight intervals from birth to 145 kg body weight. Body component amino acid compositions (g/100 g protein) were multiplied ...
López C S - - 1998
The envelope properties of B. subtilis cultures grown in LB and LBN hyperosmotic media (LB + 1.5 M NaCl) were compared. Since hypertonic cultures showed a Spo-phenotype, a Spo-mutant grown in LB was also analyzed. LBN cultures showed extensive filamentation and presented different sensitivities toward phage infection (phi29 and phi105), ...
Pruski A M - - 1997
Three sulphur-amino acids, taurine, hypotaurine and thiotaurine, are shown to exist in deep-sea symbiotic mussels. Their relative and absolute importance differs in the three species of mussels studied and seems to be related to the metabolism of the symbionts. Thiotaurine only occurs in high concentration in thiotrophic species, whereas hypotaurine ...
Church J S - - 1997
Wool fibers are comprised of proteins known as alpha-keratins and have a complex morphological structure. The major components of this structure, the cuticle and cortical cells, differ in the conformations of their chains as well as their amino acid compositions. High quality Fourier transform Raman spectra of cortical and cuticle ...
Heiba H I - - 1997
Fatty acid compositions of twelve algal species from two different classes were determined. Three Chlorophyta species (Acetabularia calyculus, Cladophora sericoides and Dictyosphaeria cavernosa) and nine Phaeophyta species (Colpomenia sinuosa, Cystoseria trinodis, Dictyota cervicornis, Hormophysa triquetra, Padina gymnospora, Sargassum binderi, S. boveanum, S. denticulatum and S. heteromorpha) were investigated. Thirty-four fatty ...
Xing W - - 1996
The effects of 21 amino acids on sister-chromatid exchanges (SCEs) in human lymphocytes were investigated. Addition of each of the 21 amino acids, originally in a composition of the culture medium RPMI 1640, at three different concentrations (10 micrograms/ml, 50 micrograms/ml and 100 micrograms/ml) caused a dose-independent increase in SCE ...
Stahl P D - - 1996
Cellular fatty acid composition of 100 different filamentous fungi, including oomycetes, zygomycetes, ascomycetes, basidiomycetes, and sterile mycelia, was analyzed to determine if they can be differentiated from one another on this basis and how minor variations in culture temperature and age affect this characteristic. Many fungi were found to possess ...
Hollis D G - - 1996
Twenty strains of glucose-utilizing, small gram-negative slightly pleomorphic rods that grew well aerobically and that were isolated from clinical specimens formed a phenotypically similar group that was designated CDC group IIc. The phenotypic characteristics of CDC group IIc were most similar to those of CDC groups IIe and IIh, the ...
Flaherty C - - 1996
Rhodococcus rhodnii N445 was investigated for the presence of macroamphiphilic lipoglycan. Purification of a hot phenol-water extract by hydrophobic interaction chromatography allowed the resolution of three lipoglycan fractions. The two main preparations contained lipoglycans with carbohydrate compositions consistent with the presence of lipoarabinomannan and lipomannan, whilst the minor fraction appeared ...
de Gee A J - - 1996
The purpose of this investigation was to test the effect of an enzymatic and an acidic medium on in vitro wear of dental resin composites and an amalgam. Wear was evaluated in two-body and three-body wear conditions. The third body was a food slurry either in water, an esterase solution ...
Stefanini G F - - 1996
After 10 months of alcohol abstinence a malnourished alcoholic patient improved his nutritional status. The analysis of peripheral blood lymphocyte response to mitogenic stimulation with the antibody anti-CD3 and of the fatty acid composition of the (poly)-phosphoinositide fraction derived from lymphocytes revealed: 1) a similar [3H]-thymidine uptake as in control ...
Bernard N - - 1996
The precipitation equilibria of hen egg-white lysozyme and bovine serum albumin from aqueous solutions by caprylic acid were studied. A thermodynamic equilibrium was obtained, and the compositions of both the precipitate and the aqueous phases were measured to establish phase diagrams for both systems. The precipitate was not pure protein, ...
Blume-Peytavi U - - 1996
Structural hair changes may be the expression of a genetic disorder affecting hair growth, part of a congenital syndrome with accompanying hair malformations, or a marker for an underlying metabolic disorder. We report a 22-month-old Turkish girl and her 10-month-old brother, whose scalp hair became fragile and sparse at about ...
Ekborg-Ott K H - - 1996
Even though amino acids are important trace components in the brewing of beers, they have not been extensively evaluated in these beverages. Studies involving the enantiomeric composition of these amino acids are even less prevalent. A brief summary of the brewing process for malt beverages is given. The total concentration ...
Santos A C - - 1996
Pachyrhizus erosus seeds were analysed for proximate composition, minerals, protein fractions, antinutritional factors, and rotenoids. The seeds showed a high content of proteins, lipids, Fe and Ca, in comparison to other legumes. Glutelins constitute the highest protein fraction, followed by globulins. Antinutritional substances detected as tannins, hemagglutinating activity and trypsin ...
Rhodes J - - 1996
Ingestion, excretion and respiration in aphids were studied using artificial diets labelled with radioactive sucrose or amino acids. The rate of ingestion of a 25 % w/v sucrose diet was 12.4 nl mg-1 h-1 and the honeydew excretion rate was 5.3 nl mg-1 h-1, about 43 % of the volume ...
Monden T - - 1995
The self-induced endogenous elicitor isolated from potato having molecular weight 9200 was degraded with trifluoroacetic acid to determine the sugar composition. The requisite composition of the elicitor was estimated to be a 2:3:4:7 mixture of galactose, rhamnose, arabinose, and galacturonic acid. Furthermore, the structure of oligogalacturonic acid moiety was found ...
Patrickios C S - - 1995
Experimental isoelectric points and amino acid compositional data for 58 proteins were compiled and organized. The experimental isoelectric points correlated well with the acidic to basic amino acid molar ratio. This agreement proved the usefulness of a recently presented analytical expression correlating explicitly protein isoelectric point to acid-base composition. Regressed ...
Arroyo C M - - 1995
Ointment formulations of reactive topical skin protectants (rTSPs) or topical skin protectants (TSPs) based on perfluorinated polyether material (PFPE, i.e., fomblin RT-15) were prepared and spin labeled. Four N-oxyl-4-4'-dimethyloxazolidine derivatives of stearic acid, 5-NS, 7-NS, 12-NS, and 16-NS, were used as spin probes. The spin-labeled vehicle, fomblin-RT-15, and vehicle containing ...
Cobos A - - 1995
The differences in the chemical and fatty acid compositions between the meats of five Spanish wild rabbits (Oryctolagus cuniculus) and five Spanish wild hares (Lepus europaeus) for foreleg, loin, hindleg and perirenal fat have been studied. Only significant differences (P < 0.05) in the meat chemical composition were observed between ...
Sotelo A - - 1995
Five wild Phaseolus vulgaris beans were compared with five cultivated Phaseolus vulgaris beans in proximate composition, total (true) protein, amino acid composition, and toxic and antinutritional factors. The wild beans contained more protein (25.5% vs. 21.7%), ash (5.15 vs. 4.15%), crude fiber (7.08% vs. 5.04%) compared to cultivated beans while ...
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