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Li Geng - - 2014
A unique chemo-enzymatic route to lipopeptides was demonstrated herein that, relative to alternative methods such as SPPS and microbial synthesis, is simple, efficient and scalable. Homo and co-oligopeptides were synthesized from amino acid ethyl esters via protease catalysis in an aqueous media, followed by chemical coupling to fatty acids to ...
Malacarne Massimo M Department of Food Science, University of Parma, Via del Taglio 10, I-43126 Parma, - - 2013
The main requirement for milk processed in most cheese typologies is its rennet coagulation ability. Despite the increasing number of studies, the causes for abnormal coagulation of milk are not fully understood. The aim of this study was to ascertain relationships between milk characteristics and its rennet coagulation ability, focusing ...
Wang Qingwei - - 2013
Acidic wastewater with high concentration of chloride ions was generated from washing elemental mercury (Hg(0)) existed in the roast flue gas by water. This process was simulated by mercury drops entering the electrolytes with its composition changed according to the characteristics of acidic wastewater. Electrocapillary curves of different electrolytes were ...
Oulkadi D - - 2013
This study aimed to study biotic iron dissolution by using a new hybrid material constituted of well-dispersed mineral colloids in a silica gel matrix. This permitted to prevent adsorption of colloidal mineral particles on bacteria. Hybrid Silica Gel (HSG) permitted to study bioweathering mechanisms by diffusing molecules. -METHODS AND RESULTS: ...
Sindoro Melinda - - 2013
Methods are described to synthesize shape-selectable, monodisperse, aqueous-stable metal-organic frameworks (MOFs) by the reaction of aluminium nitrate with benzene tricarboxylic acid in various aqueous solvent mixtures and acetic acid as the capping ligand. Environmental stability was confirmed by thermal analysis and immersion in aqueous acidic media.
Deshmane Chinmay A - - 2013
The preparation of a variety of sulfonated carbons and their use in the esterification of oleic acid is reported. All sulfonated materials show some loss in activity associated with the leaching of active sites. Exhaustive leaching shows that a finite amount of activity is lost from the carbons in the ...
Duan Yan-Ping - - 2013
The occurrence and multi-phase distribution of five pharmaceutical compounds were investigated in an urban wastewater treatment plant (WWTP) receiving river by analysis of pharmaceuticals in sediment, particulate matter, conventional dissolved phase (>0.7μm), colloidal phase (5kDa to 0.7μm), and truly dissolved phase (<5kDa) water. Diclofenac was found in all samples, followed ...
Szabo Zoltan - - 2012
Capillary electrophoresis with laser induced fluorescence detection (CE-LIF) was employed for rapid sialic acid speciation, facilitating the quantitative determination of N-glycolylneuraminic acid (Neu5Gc) and N-acetylneuraminic acid (Neu5Ac) on glycoproteins. Derivatization of the sialic acids with 2-aminoacridone (2-AMAC), using classical reductive amination in a nonaqueous solvent, led to the spontaneous decarboxylation ...
Reifenrath Kerstin - - 2012
Elaiosomes of myrmecochorous plant seeds are known to enhance the attraction of diaspore-dispersing ants by serving as a nutritional reward. However, it remained unclear which (nutritional) compounds affect diaspore preferences of ants. We hypothesized that apart from elaiosome/seed-size ratio, volume, and physical surface of diaspores, the quantity and the composition ...
Conklin Sean D - - 2012
Roxarsone, (4-hydroxy-3-nitrophenyl)arsonic acid, is an arsenic-containing compound that has been approved as a feed additive for poultry and swine since the 1940s; however, little information is available regarding residual arsenic species present in edible tissues. We developed a novel method for the extraction and quantification of arsenic species in chicken ...
Brígido Clarisse - - 2012
Our goals were to evaluate the tolerance of mesorhizobia to acid and alkaline conditions as well as to investigate whether acid tolerance is related to the species or the origin site of the isolates. In addition, to investigate the molecular basis of acid tolerance, the expression of chaperone genes groEL ...
Harris Rachel L - - 2012
The short-beaked echidna is believed to use olfactory cues from a cloacal scent gland to attract and locate mates during the breeding season. We investigated the chemical composition of echidna secretions, including cloacal swabs and solid, "waxy" exudates from the cloaca and spurs. Scent samples from 37 individuals were collected ...
Wu Qun - - 2012
Aims:  The famous traditional Chinese Maotai-flavour liquor is produced by a unique spontaneous simultaneous saccharification and fermentation process, which contributes to a distinctive yeast community with specific physiological properties and performances. Therefore, it would be useful to investigate this yeast community and reveal the novelty of its characteristics. Methods and ...
Kamble Nitin A - - 2012
Carbohydrate polymers with acid-base properties of extracellular matrix (ECM) have a critical impact on guidance, migration and synaptic transmission. The present study showed acid-base properties of ECM stained with histochemical techniques. The central nervous system (CNS) of mature terrestrial slug Semperula maculata and freshwater bivalve Lamellidens corrianus was selected to ...
Bergvik Maria - - 2012
Calanus finmarchicus is the dominant zooplankton species in the North Atlantic. This zooplankton is also of interest for commercial harvesting due to its high abundance and biochemical contents. In the present study, copepodite stage V of C. finmarchicus was sampled at different depths from January to June in 2009, 2010 ...
Tsai Cheng-Jung - - 2012
The fatty acid compositions of 21 species of marine macroalgae, including 5 species of Chlorophyta (green algae), 13 of Rhodophyta (red algae) and 3 of Heterokontophyta (brown algae) were collected from the Northeastern Taiwan to survey their functional lipids. The lipid contents of green algae ranged 15.36~20.15 mg / g ...
Pathak Rakesh Kumar - - 2012
A highly fluorescent Zn(2+) complex of the triazole linked salicyl-imino-thiophenyl conjugate of calix[4]arene, [Zn] has been demonstrated to be a chemo-sensing ensemble for the recognition of His and Cys among the naturally occurring amino acids in HEPES buffer milieu. The recognition behaviour of the [Zn] towards these amino acids has ...
Riddell J - - 2012
This paper addresses the effects of gaseous nitric acid (HNO(3)) and ozone (O(3)), two important air pollutants, on six lichen species with different morphological, ecological, and biological characteristics. The treatment chambers were set up in a factorial design consisting of control chambers, chambers fumigated with HNO(3), with O(3), and with ...
Du Yi - - 2012
The existence of multiple variants with differences in either charge, molecular weight or other properties is a common feature of monoclonal antibodies. These charge variants are generally referred to as acidic or basic compared with the main species. The chemical nature of the main species is usually well-understood, but understanding ...
Guijas Carlos - - 2012
Cells metabolize arachidonic acid (AA) to adrenic acid (AdA) via 2-carbon elongation reactions. Like AA, AdA can be converted into multiple oxygenated metabolites, with important roles in various physiological and pathophysiological processes. However, in contrast to AA, there is virtually no information on how the cells regulate the availability of ...
Boukouvala Evridiki - - 2012
Overlapping external morphometric characters easily confound the flatfishes Solea aegyptiaca and Solea solea (Soleidae) in areas of the Mediterranean Sea where both species live in sympatry. This leads to uncertainties in the fisheries and marketing of the species, in addition to misinterpretations in biogeography and conservation studies. Here we describe ...
D'oca Marcelo G M - - 2012
Sarcocornia ambigua (Michx.) M.A. Alonso & M.B. Crespo is the most widely distributed species of the perennial genus of glasswort in South America, and it shows great biotechnological potential as a salt-water irrigated crop. Qualitative and quantitative compositions of fatty acids were determined in the seeds of S. ambigua that ...
Wouters Dorrit - - 2012
BACKGROUND: Artisanal vegetable fermentations are very popular in Eastern European countries. Fresh vegetables undergo a spontaneous fermentation in the presence of salt, which is mainly carried out by lactic acid bacteria (LAB). RESULTS: Culture-dependent and culture-independent analyses of end-samples of various spontaneous vegetable fermentations carried out in houses of the ...
Theel Elitza S - - 2012
An on-plate testing method using formic acid was evaluated on the Bruker Biotyper matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry system using 90 yeast and 78 Corynebacterium species isolates, and 95.6 and 81.1% of yeast and 96.1 and 92.3% of Corynebacterium isolates were correctly identified to the genus ...
Güvenç Aysegül - - 2012
Fatty acid compositions of seeds of five taxa of the Juniperus section of the genus Juniperus L. (Cupressaceae), i. e. J. drupacea Lab., J. communis L. var. communis, J. communis var. saxatilis Pall., J. oxycedrus L. subsp. oxycedrus, and J. oxycedrus subsp. macrocarpa (Sibth. & Sm.) Ball, were investigated. Methyl ...
Landolt Peter J - - 2012
BACKGROUND: Phenylacetaldehyde is a flower volatile and attractant for many nectar-seeking moths. Acetic acid is a microbial fermentation product that is present in insect sweet baits. It is weakly attractive to some moths and other insects, but can be additive or synergistic with other compounds to make more powerful insect ...
Yang Liping - - 2012
Ten perfluoroalkyl acids (PFAAs) were measured in the seafood collected from Bohai Bay, China, in 2010. The summed concentrations of the PFAAs were in the ranges of ND-194 and 4.0 to 304 ng/g dry weight for invertebrates and fish, respectively. The levels of perflurooctanesulfonate (PFOS) and perfluorooctanoic acid (PFOA) in the ...
Wang Ming Li - - 2012
The Hibiscus genus encompasses more than 300 species, but kenaf (H. cannabinus L.) and roselle (H. sabdariffa L.) are the two most economically important species within the genus. Seeds from these two Hibiscus species contain a relatively high amount of oil with two unusual fatty acids: dihydrosterculic and vernolic acids. ...
Ngakegni-Limbili Adolphe Christian - - 2012
BACKGROUND: Today, few known plant species provide both an essential oil (EO) and a vegetable oil (VO). Seed and husk of two Aframomum species were investigated and compared in terms of EO, fatty acids, tocopherols, and tocotrienols. RESULTS: EO yield reaches 15.3 g kg(-1) in the seeds and 3.2 g ...
Davies Leela R L LR Department of Medicine, Glycobiology Research and Training Center, University of California San Diego, La Jolla, California 92093-0687, - - 2012
The sialic acid (Sia) N-acetylneuraminic acid (Neu5Ac) and its hydroxylated derivative N-glycolylneuraminic acid (Neu5Gc) differ by one oxygen atom. CMP-Neu5Gc is synthesized from CMP-Neu5Ac, with Neu5Gc representing a highly variable fraction of total Sias in various tissues and among different species. The exception may be the brain, where Neu5Ac is ...
Glover T Grant - - 2012
The adsorption of ammonia on Zr(OH)4, as well as Zr(OH)4 treated with sulfuric acid, were examined. The results show that treating Zr(OH)4 with sulfuric acid leads to the formation of a sulfate on the surface of the material, and that the sulfate contributes to the ammonia adsorption capacity through the ...
Finke Mark D - - 2012
A variety of insects are commonly fed to captive insectivores but detailed nutritional analyses are only available for the most commonly fed species. Soldier fly larvae, Turkestan cockroach nymphs, tebo worms, and adult house flies were analyzed for moisture, protein, fat, ash, acid detergent fiber, neutral detergent fiber, minerals, amino ...
Morales P - - 2012
Polyunsaturated fatty acids play an important role in human nutrition, being associated with several health benefits. The analyzed vegetables, in spite of its low fat content, lower than 2%, present a high proportion of polyunsaturated fatty acids of n-3, n-6 and n-9 series, such as α-linolenic, linoleic and oleic acids, ...
Martín-Sómer Ana - - 2012
The complexes formed by the interaction between a series of phosphines, R-PH2 (R = H, CH3, c-C3H5, C6H5) and AlH3 have been investigated through the use of high-level G4 ab initio calculations. These very stable complexes behave as much stronger acids than the isolated phosphines. This dramatic acidity enhancement, which ...
Minervini Fabio - - 2012
Seven mature type I sourdoughs were comparatively back-slopped (80 days) at artisan bakery and laboratory levels under constant technology parameters. The cell density of presumptive lactic acid bacteria and related biochemical features were not affected by the environment of propagation. On the contrary, the number of yeasts markedly decreased from ...
Pereira Gilberto Vinícius de Melo - - 2012
Spontaneous cocoa bean fermentations performed under bench- and pilot-scale conditions were studied using an integrated microbiological approach with culture-dependent and culture-independent techniques, as well as analyses of target metabolites from both cocoa pulp and cotyledons. Both fermentation ecosystems reached equilibrium through a two-phase process, starting with the simultaneous growth of ...
Smith Helen E K - - 2012
Coccolithophores are an important component of the Earth system, and, as calcifiers, their possible susceptibility to ocean acidification is of major concern. Laboratory studies at enhanced pCO(2) levels have produced divergent results without overall consensus. However, it has been predicted from these studies that, although calcification may not be depressed ...
Guo Zhiqian - - 2012
A boronic acid moiety can bind to nucleophilic species, such as fluoride ions and 1,2-diols, and arylboronates are converted to the corresponding phenols by treatment with hydrogen peroxide. Based on these reactivity profiles of boron compounds, a variety of boronic acid and boronate-based fluorescent chemosensors have been developed for detecting ...
Diamantopoulou Panagiota - - 2012
The effect of four synthetic media containing glucose (initial concentration 30 g l(-1)) on mycelial growth, exopolysaccharides (EPS) and cellular lipids production was examined in 11 mushroom species after 12 and 16 days of culture in static- and shake-flasks. Fatty acid analysis of cellular lipids produced was also performed. Agitation had a positive ...
Liu Qin - - 2012
The profile and distribution of soluble and insoluble phenolics in 10 rapeseed (Brassica napus) varieties were studied in this work. Photometric results show that the soluble total phenolic content (TPC) and the total tannin content (TTC) of rapeseed dehulled flours are much higher than those of rapeseed hulls. Soluble and ...
Qin Xuemei - - 2012
Radix Bupleuri is a traditional Chinese medicine harvested from two Bupleurum species (B. chinense and B. scorzonerifolium). It is widely used and is sourced from different regions of China. 1H NMR spectroscopy and multivariate data analysis were applied to 67 Radix Bupleuri samples to discriminate the two species, and explore ...
Theodoulou Frederica L FL Biological Chemistry and Crop Protection Department, Rothamsted Research, West Common, Harpenden, Hertfordshire, - - 2012
The transition from seed to seedling is an important step in the life cycle of plants, which is fuelled primarily by the breakdown of triacylglycerol (TAG) in 'oilseed' species. TAG is stored within cytosolic oil bodies, while the pathway for fatty acid β-oxidation resides in the peroxisome. Although the enzymology ...
Brambilla Cecilia - - 2012
The capacity to form microscopic cords (cording) of Mycobacterium species has been related to their virulence. The compounds responsible for cording are unknown, but a recent study has shown that cording could be related to the fine structure of α-mycolic acids. This investigation attributes the need for a proximal cyclopropane ...
Brodeur-Campbell Michael - - 2012
This study seeks to investigate the effects of biomass mixtures on overall sugar recovery from the combined processes of dilute acid pretreatment and enzymatic hydrolysis. Aspen, a hardwood species well suited to biochemical processing, was chosen as the model species for this study. Balsam, a high-lignin softwood species, and switchgrass, ...
Townsend Thomas Michael - - 2012
Acidic tropospheric aerosols contain inorganic species such as 'sulfurous' acid (H2SO3). As the main alkaline species, ammonia (NH3) plays an important role in the heterogeneous neutralisation of these acidic aerosols. An aerosol flow-tube apparatus was used to obtain simultaneous optical and size distribution measurements using FTIR and SMPS measurements respectively ...
Tabarsa Mehdi - - 2012
BACKGROUND: The nutritional compositions of two edible red (Gracilaria salicornia) and green (Ulva lactuca) seaweeds were determined to evaluate their possible uses as potential food ingredients. RESULTS: In general, these species contained limited amounts of lipids ranging between 0.99 and 2.00 g 100 g(-1) dry weight) and considerably high amount ...
Xu Jilin - - 2012
This study has investigated the effects of six different unialgal diets (Chaetoceros calcitrans, Platymonas helgolandica, Chlorella sp., Isochrysis galbana, Nannochloropsis oculata, and Pavlova viridis) on the composition of fatty acids and sterols in juvenile ark shell Tegillarca granosa Linnaeus. The best feeding effects on the growth of shellfish were found ...
Rezanka Tomáš - - 2012
Reversed phase liquid chromatography-atmospheric pressure chemical ionization mass spectrometry (RP-HPLC/APCI-MS) was used for direct analysis of triacylglycerols (TAGs) from different strains of the cyanobacteria Mastigocladus laminosus, Tolypothrix cf. tenuis and Tolypothrix distorta. This technique enabled us to identify and quantify the specific molecular species of TAGs directly from lipid extracts ...
Ichimura Naoya - - 2012
Mycobacterium avium-intracellulare complex is a species of acid-fast microorganisms that cause opportunistic infections in immuno-compromised hosts. The cell wall of this microbe is rich in glycopeptidolipids (GPLs), which are composed of a fatty acyl moiety, several sugar moieties and a tripeptide-amino alcohol, D: -Phe-D: -alloThr-D: -Ala-L: -Alaninol. GPLs have molecular ...
Barata André - - 2012
In this work, we studied the ecological interactions between grape berry microorganisms and Drosophila sp. flies involved in sour rot disease during grape ripening. After veráison the total microbial counts of grape berries affected by sour rot increased from about 2 log CFU/g of berries to more than 7 log CFU/g. Berry damage provoked ...
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