Different succinic anhydrides were used for modification of hydrophobicities of linear and star-shaped poly (e-caprolactone) oligomers with different molecular weights. Hydroxylterminated poly(e-caprolactone) oligomers were acid-functionalized either with succinic anhydride (SAH) or with alkenylsuccinic anhydrides (ASAs) containing 8 or 18 carbons in their alkenyl chains. Hydrophobicities of th...

The changes in some physicochemical properties, sugar, organic acid and volatile compound contents fresh Verdani grape (Vitis vinifera L.) juice (FGJ) were evaluated the production of its traditional molasses (pekmez). After production, total soluble solid (TSS), titratable acidity (TA), glucose, fructose, malic, citric succinic concentrations increased (P

OBJECTIVE To characterize the metabolic products of urine associated with preterm birth, thus providing clinical guidelines for intestinal and parenteral nutrition in preterm infants. METHODS Urine samples of 47 preterm infants and 45 full-term infants were collected and prepared for trimethylsilylation by treatment with urease. The levels of lysine, phenylalanine, histidine, ornithine, fumar...

The structures of propioxatins A (C17H29N3O6) and B (C18H31N3O6), new enkephalinase B inhibitors produced by Kitasatosporia setae SANK 60684, were determined. Both propioxatins consist of N-acyl-L-prolyl-L-valine. N-Acyl moieties of propioxatins A and B were alpha-propyl and alpha-isobutyl succinic acid beta-hydroxamic acid, respectively.

Ergönül P.G., Nergiz C. (2010): Determination of organic acids in olive fruit by HPLC. Czech J. Food Sci., 28: 202–205. Organic acids (oxalic, citric, malic, and succinic) contents of Domat, Memecik and Uslu varieties of olives grown in Turkey were investigated using HPLC method. Organic acids were extracted from olives with water-methanol mixture solution 75:25 (v/v) and were analysed through ...

Alcoholic beverages produced by fermentation (e.g., beer and wine) are powerful stimulants of gastric acid output and gastrin release in humans. The aim of this study was to separate and specify the gastric acid stimulatory ingredients in alcoholic beverages produced by fermentation. Yeast-fermented glucose was used as a simple model of fermented alcoholic beverages; it was stepwise separated b...

The analysis of mixed acid streams plays an important role in the control of processes for the production of acetic acid and the determination of dicarboxylic and ketoacids, such as succinic (butane-dioic acid) and levulinic acids (4-oxypentanoic acid), can present particular problems to the analyst, In process streams at high temperatures these components are fully soluble but at ambient tempe...

This study presents sustainable succinic acid production from the organic fraction of household kitchen wastes, i.e., waste (OFHKW), pretreated with enzymatic hydrolysis (100% cocktail dosage: 62.5% Cellic® CTec2, 31%% β-Glucanase and 6.5% Cellic ® HTec2, cellulase activity 12.5 FPU/g-glucan). For fermentation, A. succinogenes was used, which consumes CO2 during process. OFHKW at biomass loadin...

CZostridium propionicum evidently possesses a mechanism for the conversion of lactate to propionate different from that found in the previously studied propionic acid producing bacteria. Reactions common to certain propionibacteria and VeiZZoneZZa gazogenes which could not be demonstrated with Cl. propionicum include : ( a ) the decarboxylation of succinic acid ; (b) the fermentation of malate ...