Propionic acid is a carboxylic acid produced by fermentation and widely used in chemical, pharmaceutical and food industries. It is used primarily for animal feed preservation, including hay, silage, and grains, and in human foods (mainly in baked goods and cheeses). The growing demand of this acid draws attention towards a more economical energy efficient technology. The conventional methods f...

A rapid sensitive spectrophotometric assay for the measurement of methylmalonic and propionic acids in urine is described. The assay is based upon the quantitation of propionic acid using acetyl coenzyme A synthetase isolated from baker's yeast. This enzyme is highly specific for acetate and propionate, and acetate interference is eliminated by conversion to citrate. Methylmalonic acid was assa...

The effect of a mixture of herbal extracts on piglet performance was estimated on 178 piglets allocated to 3 groups comprising 6 litters each. Group I (control) was fed with the standard barley-wheatsoybean mixture. Group II received the same mixture supplemented with a blend of formic and propionic acids. Group III received the basal diet supplemented with a mixture of water extracts from sage...

Four fistulated Holstein cows were arranged in a 4 x 4 Latin square design to study the effects of level and type of energy source on milk yield and composition. Treatments consisted of a basal diet fed alone (low energy treatment) or with 3.3 Mcal of net energy for lactation from extra nutrients perfused either into the rumen (either propionic acid or a mixture of volatile fatty acids) or into...

It is well-known that prostaglandin (PG) synthetase inhibitors such as aspirin and indomethacin induce gastrointestinal ulcer both in experimental animals and humans. In addition, it has been reported that PG levels in the plasma and gastric juice of patients with ulcer are significantly lower than these levels in healthy subjects (1). On the other hand, PGE type PGs and their analogs are effec...

Abstract Background Filling silos generally takes much time in practice, which may negatively affect silage fermentation and feed intake. To clarify the effects of inoculating time, lactic acid bacteria (LAB) strains filling on microbes stylo ( Stylosanthes guianensis ) its silage, ensiling was quickly performed (quickly filling, QF) with or without LAB Lactobacillus plantarum SXC48, Lb. CCZZ1 ...