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537-acidic protease

Product specifications: 50000 units/g, 80000 units/g.
Packing: inner packing in plastic bags of 2kg net each. The outer packing is packed in cartons, each containing 10 bags of 20kg net.
Storage: This product should be placed in a cool, dry and ventilated place to prevent enzyme activity loss caused by heat, moisture and direct sunlight.

分类:

I. Product performance and characteristics
The product is acidic protease produced by deep fermentation of Aspergillus yusomei, which is made by salting out, drying and grinding into powder.
This product can rapidly decompose protein substances under acidic conditions. Its optimal action is PH3.0, the appropriate PH range is PH2.5-4.0, and the optimal action temperature is 55℃, stable below 40℃. This product dissolves easily in water.

Ii. Use of the product
Acidic protease is widely used in tanning, wool spinning, feed, brewing and other industries
This product is used for water immersion before leather making, the use of enzyme immersion can overcome the shortcomings of traditional water immersion technology, and there is a prominent advantage, that is, enzymes used in enzyme immersion can degrade the skin glue and fiber interalbumen at the same time, making the skin easy to fill with water, promote the moisture return of raw skin, quickly recover to the fresh skin state. Therefore, shorten the soaking time, and can remove skin scale, open the fiber, make the processed leather grain surface smooth.

This product can be used to soften enzymes in tannic acid. The most important role of enzyme softening is to remove the coagulated protein of the skin. The softening effect was mild and uniform under acidic conditions, which was similar to that of neutral protease alone.

In the conventional tanning process of wet blue leather, it is usually necessary to use strong acid to acidify the original leather to PH2.5 ~ 3, because in the low PH condition, the reaction between chromium and the ionized terminal carboxyl group is enhanced, so that the chromium salt precipitation on the surface of the leather, can not penetrate into the skin, thus causing chromium spots. The wet blue leather was treated with enzymatic softening. It can make the granulated surface of wet blue leather more delicate, better loosen the granulated surface, make the leather body full, stain even, no chrome spots appear, improve the fixation rate of chrome in the skin and the depletion rate of chrome in the tanning liquid.

This product is used to treat fur, fur has the advantages of light, thin, soft and warm. Acid protease has very good performance on fur softening, can make leather soft and can make fur firm, still can increase the luster of wool, be helpful for dyeing, finished product colour and lustre is bright, feel is full. So as to improve the quality of fur, improve the yield of products. Adding this product into the feed can degrade the protein in the feed and improve the protein utilization rate.
This product is used in brewing industry to improve the flavor of its products and increase the yield of wine.

Iii. Product quality
This product is brown or gray powder, the quality conforms to the industry standard of the People’s Republic of China, the industrial enzyme preparation QB1805.3-93.

Iv. Reference dosage
Fur treated 10-45U /g alcohol produced 10-14u /g feed supplemented with 3-5u /g.

Define:
1g enzyme powder (1ml enzyme solution) was used to hydrolyze casein to produce 1mg tyrosine as an enzyme activity unit u/g (u/ml) at 40℃ pH3.0.
Rules:
Solid: 50,000 U /g, 80,000 U /g
To use:
Suitable for fur, wool dyeing, brewing, alcohol, and feed industry.

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