Corn steep liquor is an important extract produced in the process of soaking corn in micro acid. Its production makes a new progress in many fields of additive sources. It is a new type of organic nitrogen source product recognized in the market. It contains rich and diverse nutrients, and has been an important nutrient additive in microbial fermentation for a long time. Because of the limitations of corn steep liquor, which was used in the past, it is not convenient to transport, store and use. Because of the high content of protein and trace elements, it is easy to ferment and deteriorate when the temperature is slightly higher, which affects the effect of use. For example, it is easy to be biologically decomposed in normal temperature storage, and it will occupy a large volume and inconvenient transportation. If the temperature is too high, it will destroy the nutritional components of corn steep liquor itself, so it is also restricted by the temperature region.

Corn steep liquor powder is a product of fresh corn syrup, which is made by hot spray drying at low temperature and instantly heated. Its water-soluble protein is well preserved, and the characteristics of corn steep liquor are maintained. The product has no coking phenomenon, which is convenient for transportation and storage, easy to use, fast in water dissolution and complete in dissolution. The main components of corn steep liquor powder are amino acids and polypeptides, and rich vitamins and growth factors. The protein content is as high as 60%, the total amino acids are 37%, ash content is less than 20%, and water content is less than 10%. Corn steep liquor powder is an important raw material for antibiotic production and other media, and provides natural organic nitrogen source for microbial production.

The appearance of corn steep liquor powder product is in powder state, which is more convenient for transportation, storage and use than corn pulp or corn paste, and the product is not easy to mildew and easy to use. The yield and quality of the products are stable, and they are used as water-soluble plant protein and water-soluble vitamins and other nutritional elements supplement in the process of biological fermentation. Corn steep liquor powder is a good feed material, and its quality is safe and stable, and can be used directly in aquaculture.