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Quick Details

  • CAS No.: 9025-49-4
  • Other Names: Acid Protease
  • EINECS No.: 232-752-2
  • Place of Origin: Hubei, China (Mainland)
  • Type: Feed Grade Enzymes
  • Efficacy: Promote Healthy & Growth, Promote Nutrition
  • Brand Name: Angel
  • Model Number: 50,000 U/g-80,000 U/g
  • Type:: Solid
  • Color:: Yellow brown prowder
  • Packing:: 20KG/bag
  • Form:: Powder
  • Shelf life:: 6 Months
  • Primary Ingredient:: Acid protease

Packaging & Delivery

Packaging Details 20KG/bag
Delivery Time 20 days against advance payment

Angel acid protease catalyzes amide (peptide) bond hydrolysis in protein or peptide substrates. It is widely used in brewery and manufacture of alcohol, food processing, feed additives, leather processing, etc.

Effects: eliminate the anti-nutritional factor, and increase the utilization of feedstuff.





Yellow Brown powder

Enzyme Activity U/g    min


Loss On Drying %       max


 Arsenic ,mg/kg     max


Lead ,mg/kg        max


Cadmium ,mg/kg    max




*Activity: One Activity Unit is the amount of acid protease required to liberate the equivalent of 1 μg of Tyrosine per minute under the specified conditions and at 40°C, pH 3.0


1. Levels: in alcohol fermentation from corn, the amount of enzyme used usually ranges between 10-16 activity units per gram of ingredient, depending on ingredients and other considerations. An example would be if 14 activity units per gram ingredient is chosen, then for each ton of ingredient, 280 g of 50000 U/g Acid Protease would be used. If 40000 U/g of Acid Protease is used, then 350 g should be needed. In food and feed, the amount used will depend on the specific need of the client and should be adjusted accordingly, with a suggestion of 5-10 U/g ingredient to begin with. For soy sauce production, the suggested rate is 25 U/g ingredient, and for beer, 5 U/g ingredient is suggested.

2. Method:

a) Initial fermentation of Alcohol: After filling 1/3 of the ingredients into the fermenting cellar, add in a full amount of livened enzyme. Continue filling cellar and ferment.

b) Post-fermentation of alcohol: Add acid protease to the fermenting batch through the successive sugar-adding slot provided on the fermenting cellar.

c) Fermenting solids to produce alcohol: After heating the ingredients, cool down to the ideal temperature range and add the whole required amount of acid protease. Be sure the enzyme is thoroughly mixed in.

d) Yeast production through fermentation of solid or production of single cell protein feed: After heating, cool the ingredients to 30°C. Add 20 units of Acid Protease per gram of ingredient to lukewarm water, after dissolving, add yeast strain and mix well into batch of ingredients and ferment.




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China (Mainland) | Manufacturer, Trading Company
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