Results 211 to 220 of about 120,914 (262)

Digestive enzymes of cattle

Journal of the Science of Food and Agriculture, 1981
AbstractThe nature of endogenous enzymes in the alimentary tract of cattle is examined and their functions in digestive processes discussed. The main digestive enzymes in cattle are salivary and pancreatic lipase, rennin, pepsin, trypsin, lactase and amylase. Maltase and isomaltase, celliobiase, trehalase, elastase and carboxypeptidase are also present.
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Enteropancreatic Circulation of Digestive Enzymes

Science, 1975
Intact digestive enzymes can be absorbed by the intestine and resecreted by the pancreas. The pancreas, therefore, appears to be able to recycle proteins much as the liver recycles bile salts, although the magnitude of this process remains uncertain.
C, Leibow, S S, Rothman
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Digestive tract enzymes in phoronida

Comparative Biochemistry and Physiology, 1969
Abstract 1. 1. The digestive tract of Phoronis vancouverensis was examined histochemically for distribution of acid and alkaline phosphatases and esterase, and also by starch-gel electrophoresis. 2. 2. Phosphatases and esterases are found to be restricted to the oesophagus, preventriculus and stomach. 3. 3.
J H, Vandermeulen, R G, Reid
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Transpancreatic transport of digestive enzyme

Biochimica et Biophysica Acta (BBA) - General Subjects, 1979
When porcine alpha-amylase or bovine chymotrypsinogen A was added to the medium bathing the rabbit pancreas in short-term organ culture, the secretion of these enzymes collected via the duct system increased greatly. To determine if it was indeed the amylase added to the bath that was recovered in secretion, endogenous enzyme stores were prelabeled ...
L D, Isenman, S S, Rothman
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Human Pancreatic Digestive Enzymes

Digestive Diseases and Sciences, 2007
A primary function of the pancreas is to produce digestive enzymes that are delivered to the small intestine for the hydrolysis of complex nutrients. Much of our understanding of digestive enzymes comes from studies in animals. New technologies and the availability of the sequence of the human genome allow for a critical review of older reports and ...
David C, Whitcomb, Mark E, Lowe
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The role of pancreatic enzymes in digestion

The American Journal of Clinical Nutrition, 1973
The major portion of the human diet consists of proteins, fats, and polysaccharides. Although minute amounts of some of these may be absorbed without prior hydrolysis, the majority of the nutrients traverse the small intestine after digestion into their building blocks consisting mainly of small peptides, amino acids, fatty acids, mono- and ...
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Enzyme digestion in the proximal digestive tract of the pig: A review

Livestock Production Science, 1982
Abstract Studies on enzyme digestion in the precaecal part of the digestive tract show that the pig posesses digestive enzymes that can completely break down dietary substrates to absorbable nutrients. Gastric pepsins, pancreatic proteolytic enzymes and intestinal peptidases are responsible for the hydrolysis of dietary proteins; salivary and ...
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Digestive enzymes of human and nonhuman primates

Evolutionary Anthropology: Issues, News, and Reviews, 2016
All living organisms need to consume nutrients to grow, survive, and reproduce, making the successful acquisition of food resources a powerful selective pressure. However, acquiring food is only part of the challenge. While all animals spend much of their daily activity budget hunting, searching for, or otherwise procuring food, a large part of what is
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Inhibition of enzyme-antienzyme interaction by tryptic digests of enzyme

Biochemical and Biophysical Research Communications, 1968
Abstract This paper presents evidence that peptides of tryptic digests of adenylate kinases (EC 2.7.4.3) from yeast (Chiu et al. , 1967) and rabbit muscle (Noda and Kuby, 1957) are capable of inhibiting the rate of interaction of these enzymes with their respective antisera (Minatogawa et al. , 1967) . The inhibitions appeared specific
S, Minatogawa, P J, Russell
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Recruited lysosomal enzymes as major digestive enzymes in insects

Biochemical Society Transactions, 2019
Abstract The mass recruitment to the midgut contents of lysosomal proteolytic enzymes occurred in insects under three major selective pressures. Hemipteran (true bugs, aphids, and cicadas) ancestors lost their serine peptidases (SP) on adapting to feed on protein-free plant sap. When they returned to protein diets, their cathepsins L and
Walter R. Terra, Renata O. Dias, Clélia Ferreira   +2 more
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