Acid Protease CAS 9014-01-1 For alcohol fermentation, leather softening, wool dyeing, juice purification and feed additives

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Quick Details
CAS No.:
Other Names:
Acid Protease
Place of Origin:
Hubei, China
Enzyme Preparations, Preservatives
Brand Name:
Model Number:
Aspergillus niger through cultivation and extraction technique
1 unit of High Temperature a-Amylase
Brown Liquid (snuff color,powder)
30-50℃, favorable at 40-45℃
2.5-5.5, optimum 3.0-4.5
Liquid products:
25kgs/drum or 1125kgs/drum
Supply Ability
Supply Ability:
1000 Kilogram/Kilograms per Month
Packaging & Delivery
Packaging Details
Liquid products: 25kgs/drum or 1125kgs/drum
Chinese port
Product Description


 Acid Protease 


AP is an acid protease made from Aspergillus niger through cultivation and extraction technique. This product can catalyze the hydrolysis of protein under acid condition (pH 2.5-4.0). It is mainly used in the industry of alcohol fermentation, leather softening, wool dyeing, juice purification and feed additives etc.


Definition of unit:

1 unit of Acid Protease equals to the amount of enzyme, which hydrolyzes casein to get 1μg of tyrosine in 1 min. at 40℃ and pH3.0.


Enzymatic activity: ≥100,000u/ml(u/g)


Apperance: Brown Liquid (snuff color,powder)


Working condition:

Temperature: 30-50℃, favorable at 40-45℃

PH: 2.5-5.5, optimum 3.0-4.5



10-15u/g or add according to the formulations of various materials, dilute the concentrated enzyme before use.


Functions and benefits:

1. In fuel ethanol industry, acid protease can help for improving saccharifying performace and increasing alcohol yield by breaking granulose-stromal cell wall structure. Such hydrolysis would produce large amount of free α-amino nitrogen, which could provide sufficient nitrogen source for microzyme, and further advance the growth and the reproduction of yeast, increase microzyme concentration, enhance fermentation rate and shorten fermentation period, and promote the production capacity of fermentation equipments.

2. In food industry: As starch modifier, used in the production of bread, cake and sausage to improve the flavor and quality. Used in soy sauce production to increase amino acid content and used in beer to replace papain and bromelain.

3. In beer industry: can clock the formation of diacetyl and shorten beer maturity.

4. In feed industry: Accelerate proteolysis, increase feed utilization, reduce production cost.

5. In fur industry: increase fur surface gloss, raise degree of dyeing and full in touch.


Packing specification:

Powder products: 25kgs/bag.

Liquid products: 25kgs/drum or 1125kgs/drum



Should be stored in a dry and cool place, avoiding high temperature.


Shelf life:

Powder products: 25℃, 12 months, enzymatic activity remains ≥95%.

Liquid products: 25℃, 6 months, enzymatic activity remains≥90%.




Enzyme preparations belong to protein, which may induce sensitization and cause allergic type reactions in sensitized individuals. Prolonged contact may cause minor irritation for skin, eyes or mucous membrane of nose, so any direct contiguity with human body should be avoided. If irritation or allergic response for skin or eyes develops, consult a doctor.


Packaging & Shipping

Liquid products: 25kgs/drum or 1125kgs/drum

Our Services

 1. Top Quality

2. Competitive Price

3. Fast Feedback

4. Excellent After-sale Service

Company Information

 Wuhan PharmChem CO., LTD offer a diverse selection of the chemicals used in the development and manufacturing on the following industries:

Pharma &Food Intermediates

Water Treatment Chemicals

Industrial Specialties

Fine Chemicals

Medical Materials & Accessories


 Q1. How about your samples?

Yes, we can serve you our samples for your test (Freight collect).

You also can get a refund of the freight cost when the bulk order is placed.

Q2. How much for the freight?

It depends on your area, we will use DHL, FedEx and EMS bulk service, it had discount as normal express service. And we can return freight while you place order.

Q3. Do you have discount for large quantities?

Yes, It not only depends on your order quantity, but also the item you booked.

Q4. What about delivery?

Prompt shipment after receipt of order confirmation for regular products.