Corn steep liquor powder is a plant-based organic nitrogen source produced from high-quality corn through soaking, grinding, pressing, refining, and spray drying, appearance yellowish-brown.

This process maximizes the retention of water-soluble proteins, peptides, vitamins, and various growth factors in the corn. During fermentation, these components are readily assimilated by microorganisms, effectively promoting mycelial growth, enhancing cellular metabolic activity, and significantly increasing the accumulation of target products.

It is widely used in the fermentation industry for the production of enzyme preparations, vitamins, amino acids, and microbial strains, serving as a nutritional supplement—such as plant-based protein and water-soluble vitamins—during the production process. When used in combination with other culture medium components, such as yeast extract powder, peptone, and inorganic salts, it can further achieve an optimal C/N ratio.