Previous information on the catabolism of valine has been obtained by taking advantage, for the most part, of the gluconeogenic property of valine and using glucose as an indicator of its intermediary metabolism. Thus, Rose et al. (1) reported that valine and a-ketoisovaleric acid have similar gluconeogenic effects, both contributing 3 of their carbon atoms to glucose formation in phlorizinized...

In milk and milk products, a number of organic acids naturally occur. We investigated the contents of some naturally occurred food preservatives (sorbic acid, benzoic acid, propionic acid, nitrite, and nitrate) contained in domestic and imported cheeses to establish the standard for the allowable range of food preservatives content in cheese. 8 kinds of domestic precheeses (n=104), 16 kinds of ...

This study aimed to investigate the impact of storage time on bacterial community and fermentation profile silage prepared with alfalfa, whole-plant corn, their mixture. Fresh alfalfa corn were chopped combined in fresh weight ratios 1:0 (alfalfa, control), 0.8:0.2 (M1), 0.6:0.4 (M2), 0:1 (corn). Three silos each treatment analyzed after 30, 60, 90 d storage. With time, pH, acetic acid, propion...

effect of different planting ratios of oat (avena sativa l.) and vetch (vicia sativa l.) was assessed on quality and quantity of forage and silage in an intercropping system as completely randomized block design (rcbd) with four replications. the treatments were different planting ratios of oat and vetch including 0:100, 20:80, 40:60, 50:50, 60:40, 80:20 and 100:0 (oat-vetch) formed as replacem...

1. Sheep fed at a constant rate were infused intraruminally with [1-(14)C]-acetate, -propionate or -butyrate during 5hr. periods. 2. Volatile fatty acids were estimated in the rumen contents and steady-state conditions were obtained. 3. Of the butyric acid carbon 60% was in equilibrium with 20% of the acetic acid carbon, and 2-3g.atoms of carbon were interconverted/day. 4. Little interconversio...

Indigestible glucans (IGs) are dietary fibers that can promote human health via fermentation by the gut microbiota, where their physico-chemical properties play a crucial role. This effect remains to be fully explored. The aim of current study was comprehensively investigate and compare characteristics IGs with various structural properties, as well effects on microbiota. Barley β-glucan (BG), ...

Wood, Stjernholn & Leaver (1955) have proposed that propionic acid fermentation may involve the simultaneous occurrence of the Embden-Meyerhof cleavage and a second, undetermined, cleavage. The suggestion was based on the distribution of 14C in the products obtained by fermenting [1-14C]glucose, [2-l"C]glucose, [6-14C]glucose and [3:4-14C]glucose with cell suspensions. No matter which carbon at...

this study was carried out to investigate the effect of esterification on the surface roughness of eastern cottonwood. eastern cottonwood was modified without using any catalyst and solvent at different temperatures and times with two linear chain carboxylic acid anhydrides (acetic anhydride or propionic anhydride). different weight percentage gains (wpgs) were obtained at different conditions....

By quantitative gas-liquid chromatography of glucose-containing blood cultures at the moment of first signs of growth, a presumptive diagnosis of anaerobic bacteremia could be made in 24 out of 26 cultures yielding obligate anaerobes upon subsequent culture. With Bacteroides sp. (20 strains isolated), elevated levels of isovaleric acid (greater than or equal to 0.1 mumol/ml) and/or succinic aci...

A common method of silage production in Europe is based on the use cylindrical bales wrapped with polyethylene films. In this study, several modifications composition these films were tested for their impact microorganisms involved ensiling process. Different additives, including nanosilver particles and microcellulose, analyzed upon first stage experiment. second stage, usability recycled as a...