Diastase

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Chapter: Pharmacognosy and Phytochemistry : Enzymes and Protein Drugs

It is an amylolytic enzymes present in the saliva (salivary diastase or ptyalin and pancreatic diastase or amylopsin) found in the digestive tract of animals and also in malt extract. Diastase hydrolyses starch, glycogen and dextrin to form in all three instances glucose, maltose, and the limit-dextrin.


DIASTASE

 

 

Synonym

 

Amylase.

 

Biological Source

 

It is an amylolytic enzymes present in the saliva (salivary diastase or ptyalin and pancreatic diastase or amylopsin) found in the digestive tract of animals and also in malt extract. Diastase hydrolyses starch, glycogen and dextrin to form in all three instances glucose, maltose, and the limit-dextrin. Salivary amylase is known as ptyalin; although humans have this enzyme in their saliva, some mammals, such as horses, dogs, and cats, do not. Ptyalin begins polysaccharide digestion in the mouth; the process is completed in the small intestine by the pancreatic amylase, sometimes called amylopsin. The amylase of malt digests barley starch to the disaccharides that are attacked by yeast in the fermentation process.

 

Description

 



Uses

 

It is used as a digestant, used in the production of predigested starchy foods and also for the conversion of starch to fermentable sugars in fermentation.

 

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