Peptone is widely used in microbiology as a nutrient source for cultivating bacteria, yeast, and other microorganisms. It serves as a key component in culture media, providing essential amino acids and peptides that support microbial growth. In biotechnology, peptone is utilized in fermentation processes to produce enzymes, antibiotics, and other bioactive compounds. It also plays a role in vaccine production, where it helps in the growth of cells used for vaccine development. Additionally, peptone is employed in diagnostic laboratories for testing and identifying pathogens, ensuring accurate and efficient microbial analysis. Its versatility makes it a crucial ingredient in various scientific and industrial applications.