enzymes of digestion Flashcards
lipids are hydrolyzed into
2-monoacyl glycerol (by the cleavage of the fatty acids)
the degradation of carbohydrates in pigs begins in? and by which effect?
the mouth, by the effect of amylase from saliva
where does the hydrolysis of the starch will be finished? and by what enzyme?
in the small intestine, by the amylase of the pancreas
where does the digestion of compounds containing nitrogen begin in ruminants and where in other species?
in ruminants- in the forestomach
in other species- in the stomach
by symbiotic microbes
what is the role of the enzyme urease?
the enzyme-substrate is urea, and ammonia is the product which serves as N-source for the microbial protein synthesis
example for a nonprotein nitrogen
urea
the protein degrading enzymes are called
proteases
endopeptidases
renin, pepsin, trypsin, chymotrypsin
exopeptidases
aminopeptidases (splitting N terminal) or carboxypeptidases (splitting the C terminal)
where does the degradation of the proteins begin in ruminants and where in other animals?
in ruminants- forestomach
in other animals- stomach
which enzyme promotes the denaturation of the milk in the calves?
rennin
at which conditions does the rennin functions?
only in the presence of ca2+ ions at slightly acidic pH
what is the optimal pH for pepsin
1.5-2 (acidic)
pepsin splits the peptide bonds at
phenylalanine and leucine
where is trypsin produced?
pancreas
