Pepsin is a kind of digestive protease which is secreted by gastric chief cells in the stomach, its function is to decompose the protein in food into small peptide fragments. Pepsin will be activated at pH1.5 ~ 5 and decompose protein into pepsin, while part of them is decomposed into amino acid such as tyrosine, phenylalanine etc.
Pepsin has higher activity in the acidic environment, its optimal pH value is about 3. In neutral or alkaline solution pepsin chain will be delinked lose activity. This product is extracted from gastric mucosa. of pig, sheep or cattle.
Qualifications:
|
Inspection items
|
Specifications
|
|
EP
|
USP
|
|
Property
|
White or light yellow crystalline or amorphous powder
|
White or light yellow crystalline or amorphous powder
|
|
Identification
|
Complied
|
Complied
|
|
Loss on drying
|
≤5.0% 670pa60℃,4h
|
≤5.0% 670pa60℃,4h
|
|
Residue of organic solvent
|
≤0.5% EP(5.4）
|
≤0.5% USP（467）
|
|
Enzyme activity
|
0.5~4.5Ph.Eur.U./mg
|
3000~20000NF.U./mg
|
|
Microbial Limit
|
bacteria number
|
≤10000个/g
|
≤10000个/g
|
|
Molds and yeasts
|
≤100个/g
|
≤100个/g
|
|
Escherichia coli
|
No detected/g
|
No detected
|
|
Salmonella
|
No detected /10g
|
No detected
|
Storage: It should be protected from light at the temperature of 2～8℃,it should be sealed to preserve.
Function and application:
It’s mainly used in fish meal production and hydrolysis of other proteins (such as soybean protein), milk clotting in cheese production (combined with rennet), it also can be used to prevent beer from being muddy in refrigeration. In medicine it can be used as a digestive agent. It can be used as nutritional supplements, enzyme preparation etc.
