What are biological enzymes What do biological enzymes do?

Biological enzymes: catalytic organic substances produced by living cells.

Biological enzymes are catalytic organic substances produced by living cells, most of which are proteins, and a very small part of which are RNA. So choose A.

The manufacturing and application fields of biological enzymes are gradually expanding, and the application of biological enzymes in the textile industry is becoming more and more mature, from the past mainly used for the desizing of cotton fabrics and the degumming of silk, to the wide application in various fields of textile dyeing and finishing, reflecting the superiority of biological enzymes in the dyeing and finishing industry.

Now the enzyme treatment process has been recognized as a green production process that meets the requirements of environmental protection, which not only improves and enhances the performance of textiles, but also is conducive to the protection of ecological and environmental protection because it is non-toxic and harmless, the dosage is small, biodegradable wastewater, and no pollution.

The role of proteases.

Used in the food fermentation industry:

1. The brewing of soy sauce is to use the protease secreted by Aspergillus oryzae to decompose the protein in the raw material, so that it can be degraded into peptone, polypeptide and amino acids to produce a product integrating color, aroma and taste. There are also soy sauces that are brewed directly from protease preparations, but the flavor is not good.

2. In beer brewing, when the amount of maltose decreases and the excipients increase, it is often necessary to supplement protease to fully degrade the protein, and mold and bacterial protease are suitable for this purpose. Microbial acid protease is also an effective beer clarifier. Fish sauce is made by natural fermentation of fresh fish with 25%-30% salt for 6-12 months, if a little mycoprotease is added, the fermentation time can be shortened and the flavor can be improved.

For tanning production:

1. Fibrin in the raw material of tanning is a useful component of leather, in addition, there are many non-fibrous proteins in the fiber gap and epidermis, although the protein content is small, if not removed, the finished leather is stiff and brittle. Protease can not decompose natural collagen, but can only decompose interstitial proteins, so it can be used in the tanning process, and domestic production of neutral and alkaline protease preparations can be used for enzymatic hair removal.

Manufacture of gelatin and soluble collagen fibers:

1. Industrially, the oil and miscellaneous proteins in raw materials such as peel and bone are soaked in lime water, this process takes up to several months, labor intensity, low glue yield and high energy consumption, collagen purification with protease, high gelatin purity, high molecular quality, neat molecular arrangement, short production cycle, high gelatin yield, almost 100%.

Pretreatment wool dyeing at low temperature:

1. Wool dyed with high temperature, the strength of the wool will be damaged, and it is easy to cause fiber felting shrinkage and hair erection, the wool treated with protease, dyed at the boiling point, the color rate of 2min can reach 100%, the finished product is bright in color, the feel is plump, and the fuel content in the wastewater is greatly reduced.

Silk degumming: 1, raw silk fabric must be degummed, sericin is a protein, China has always used alkali soap method high temperature silk refining for degumming, there are many shortcomings, alkaline invasion of silk fibroin, easy to cause hair to affect luster, after degumming with protease, the finished product feels lubricated and soft, bright luster, and the degumming time is short, the operating temperature is low, and the labor productivity is improved.