Feeding more tannin and less crude protein (CP) to dairy cows may have synergistic impacts on reducing NH emissions from dairy barns. Three trials using lab-scale ventilated chambers with concrete floors were conducted to determine the impacts on NH emission of tannin and CP feeding, tannin feeding on urease activity in feces, and tannin application directly to the barn floor. For Trial 1, mixt...

A tannin isolated from Paullinia pinnata Linn., and tannic acid, have cardiotonic actions on the isolated perfused frog heart. Paullinia tannin is more firmly "fixed" than tannic acid. Tannin solutions contain peroxide, but the cardiotonic action is not dependent on this, since drugs believed to prevent peroxide formation, and sodium pyruvate which destroys peroxides, do not prevent the cardiot...

Lactose and tannin are eco-friendly alternatives to commonly used binders for carbon-bonded alumina filters that applied in steel melt filtration. The investigation of binder pyrolysis is a contribution understand the production process these filters. In this work, lactose tannins gallic acid, ellagic tannic acid were investigated by Raman spectroscopy. measured situ an argon-filled heating cha...

Natural extracts are frequently adopted as a valuable alternative to antibiotics in intensive animal farming. Their diverse bioactive constituents such phytosterols, glucosinolates, carotenoids and polyphenols have shown antioxidant, anti-inflammatory antibacterial effects. Tannins the largest class of polyphenol compounds plant extracts, which can be classified into two hydrolysable or condens...

Although condensed tannins (CTs) are known to reduce forage intake by mammalian herbivores in controlled experiments, few studies have tested these effects in the field. Thus the role of CTs on foraging ecology of free-ranging herbivores is inadequately understood. To investigate the effects of CTs under natural savanna conditions, we pre-dosed groups of goats with polyethylene glycol (PEG, a C...