Polypeptone is widely used in microbiology and biotechnology as a nutrient source for the cultivation of microorganisms. It provides essential amino acids, peptides, and other nitrogenous compounds that support the growth of bacteria, yeast, and other cell cultures. In industrial fermentation processes, it serves as a key component in media for producing enzymes, antibiotics, and other bioactive compounds. Additionally, it is utilized in research laboratories to prepare culture media for studying microbial physiology and genetics. Its versatility and rich nutrient profile make it a valuable ingredient in various scientific and industrial applications.