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Quick Details

  • Type: Feed Grade Protease Enzyme
  • Name: acid Protease enzyme
  • Color: Yellow to brown
  • Origin: China/Shandong
  • Packing: 25KG/BAG
  • Moisture: Less than 6%
  • PH: 2.0-6.0
  • Shelf life: 12 Months
  • Lead time: 21 days after confirmed
  • Load quantity: 15MTS/20FCL

Packaging & Delivery


High quality acid Protease for animal feed enzyme


TTX acid protease is a carboxyl protease extracted from Aspergillus niger by a solid fermentation technique and refined by an advanced post-treatment technique. It can hydrolyze the peptide bond of protein on the acidic condition and release the amino acid or polypeptide.

Industrial grade acid protease is mainly used in alcohol and wine fermentation, leather processing, textile, food and feed industry. It is ideal for use in the industries that utilize corn, broomcorn, rye and other high starch content ingredients. With the aid of acid protease, alcohol production becomes more efficient, increasing 0.3-0.5% alcohol and reducing energy consuming.



  1. 1.      Activity center includes aspartic acid, priority cut open both ends peptide bond between from aromatics or hydrophobic amino acids and produce out small peptide and amino acid.
  2. 2.      Temperature range: valid temperature range is 35-60, optimum temperature is 50-60
  3. 3.      pH range: valid pH range is 2.0-6.0, Optimum pH is 2.0-3.0.
  4. 4.      The activity of acid protease is activated easily by metal ion Ca2+,Mg2+, and restrained by metal ion Cu2+, Hg2+.


Specification of acid protease





≥50000 U/g

≥50000 U/mL, ≥100000 U/mL



Dark brown

Loss on drying



Particle size

More than 80% pass through standard sieve of 40 meshes




25 kg/drum or 1000 kg/drum

Shelf life

Six month at 25, ≥85%

Three month at 4 - 8, ≥85


Definition of content (GB/T 23527-2009)

One unit (U) of acid protease activity is defined as the amount of enzyme which liberates 1μg tyrosine per minute from substrate casein at PH 3.0 and 4.0.


Application (Detaied dosage should be depending on ingredients and other considerations)

1. In the alcohol fermentation, adding this enzyme can validly hydrolyze the protein in material, damage the cytoderm structure between granular material, be in favor of the function of sugar enzyme, increase the available carbon of the material which can improve the rate of coming out of wine of the material.

Recommended dosage: 50-150g/t (100000 U/g)

Batch fermentation of alcohol: Add acid protease after filling 1/3 of the ingredients.

Continuous fermentation: Add acid protease at the first fermentation tank of per batch.


2. In the processing wool fiber and dying of textile industry, It can enhance the strength of fabrics, non felt. Recommended dosage 100000 U/g acid protease is 0.6-2.0% (owf), pH 3.0-3.5, temperature 40-50, bath ratio 1:20-40, time 60-90 min.

3. In the fermentation of vinegar and distillate spirits of food field, it can promote the growth and cultivation of microzyme, improve fermentation speed.

Recommended dosage: 150-200g/t (100000 U/g)


Application Notice

1. When the acid Protease for solid type is used ,they should dissolve in the water with the proportion of 1:20.at the temperature of 30-40.

2. When the acid Protease is used in fermentation industry, the speed of fermentation is quickened, the rising temperature is rapid for fermentation.Temperature should never be over 40. 


Safety Usage

1. This product is natural enzyme. It is harmless to human, but it will stimulate skin, eyes and mucosal tissue if touched for a long time. The operator should be suggested to wear a mask and eyepatch.

2. Avoid the inhalation of mist or dust of enzyme. Wash with water immediately in case of contact with hands and eyes.


Storage and transportation

1.The product is the bioactive substance. It should be kept away from sunlight and rainwater during transportation, e.g direct light and high temperature may cause the inactivation of enzyme.

2. Storage: Storehouse should be kept clean,cool and dry, avoid high temperature and humidity

3. Do not store or transport with other toxic,harmful,corrosive substance

4. Shelf life

(1) Solid: Under 25, the enzyme activity can be well kept over 85 percent for six months. Long term preservation at 5

(2) Liquid: Under 4-8 with original sealed container, will be not less than 85% activity for 3 months

Keep containers closed when not in use.

Packaging & Shipping

1. Packaging: Solid product: Paper-plastic composite bag, 25kg/bag or as requirement

                          Liquid product: 25kg/drum or 200 kg/drum or as requirement

2. Storage: Solid product: 12 months under 25℃ in cool and dry place.

                     Liquid product: 6 months under 25℃ in cool and dry place

Avoid the high temperature and direct sunlight.

After the package is opened, use early. The package should be sealed if it hasn’t been completely used.

3. Delivery date: 10-20 days after confirmed contract

4. Port of loading: Qingdao, China by sea or as requirement

One 20'GP can contain 10 -13 tons if bag packaging

1. Packaging: Paper-plastic composite bag, 25kg/bag or as requirement

2. Storage: 12 months under 25°C in cool and dry place. Avoid the high temperature and direct sunlight.

After the package is opened, use early. The package should be sealed if it hasn’t been completely used.

3. Delivery date: 10-20 days after confirmed contract

4. Port of loading: Qingdao, China by sea or as requirement

One 20'GP can contain 10 -13 tons if bag packaging

1. Packaging: 25kg/drum or 200 kg/drum or as requirement

2. Storage: 6 months under 25℃ in cool and dry place

Avoid the high temperature and direct sunlight.

After the package is opened, use early. The package should be sealed if it hasn’t been completely used.

3. Delivery date: 10-20 days after confirmed contract

4. Port of loading: Qingdao, China by sea or as requirement

One 20'GP can contain 10 tons if drum packaging


Why choose us?

1. We are manufacturer, we can produce high quality goods according to your requirement and OEM is available.

Founded in 1998, Jinan Tiantianxiang Co., Ltd. is specialized in feed additives. We can supply enzymes and feed additives for farmers, feed mill, traders and distributors in China and abroad. At present, we own two factories as production base. One specializes in flavor enchancement and other feed additives. The other specializes in enzymes used in animal feed, food and other industry..

We have built up production workshop 6500 square meters, including fermentation workshop, post-treatment workshop and spray drying workshop.The spray tower with evaporation 1.2 tons pressure is the largest spray tower in Chinese enzyme industry, height 36m, diameter 6.5m.

2. We have advanced independent R&D department.

Our R&d team include flavor chemists, animal nutritionist, and microbiologists. they are leading bio-feed additive manufacturer in China with the most advanced equipment.

The followed achievement were obtained in the last three years:

A. 14 products were commercialized

B. 3 Patent for Invention

C. 11 int’l patents have been allowed

D. 7 research projects received gov. award

3. We have advanced equipments, skilled workers and have established perfect system for quality control.

Product quality is the life of enterprise. How do we implement the quality control? Our company manage the quality control by the following ways:

At first, We prepared for a series of international quality system certifications and have acquired four cerificates: ISO9001, iSO 22000 (HACCP) , FAMI-QS and FDA

The second, Production and QC are all strictly performed under ISO and HACCP regulation.

The third, as mentioned before, we own R&d team including flavor chemists, animal nutritionist, and microbiologists and guarantee to update product technology and processing workmanship.

The fourth, after finishing researching, start to enter into production after pilot test.

At last, our QC team takes sample inspection on production field frequently in every process.

4. We have more than 19 years manufacturing experiences and more than 8 years exporting experience in this particular line.

5. Our professional services and experiences will make us be your trustful supplier.



Contact Us

We have been working hard.

We believe

We will become the most attractive supplier of feed additives and provides the highest value to the client as the provider enzymic preparation.


We are looking forward to your visiting us and becoming our cooperative partner.



Contact me
 Name Susan Lee 
 Company Jinan Tiantianxaing Co., Ltd.
 TEL +86-531-87159986
 FAX +86-531-87950220
 Skype Susan Lee_Jnttx
 Add 6F Quanjinghongyuan Business Building, 69 Yangguangxin Road, Jinan, China
 Website www.jnttx.com
Trade manager  


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