It is a light yellow to almost white dry powder obtained by autolysis, filtration, concentration and spray drying of fresh yeast. It has a natural aroma of yeast, is easily soluble in water, and the aqueous solution is light yellow. This product has hygroscopicity, please store in a cool and dry place. Yeast powder contains a mixture of amino acids, peptides, water-soluble vitamins, yeast polysaccharides, and yeast nucleic acid, which is rich in B vitamins and various amino acids. Nucleotides, organic acids, minerals, and water-soluble substances of vitamins. Its main role is to supplement nitrogen sources and provide various vitamins and amino acids for bacterial growth. Mainly used as basic raw materials for the preparation of microbial culture media and biopharmaceutical fermentation raw materials.