Used as a fundamental component in microbiological culture media, particularly in yeast cultivation. It provides essential nutrients such as nitrogen, vitamins, and minerals necessary for yeast growth, while allowing researchers to control the addition of specific amino acids. This enables precise studies in genetic and metabolic research, especially in auxotrophic strain analysis where yeast mutants require specific amino acid supplementation. Commonly used in synthetic defined (SD) media for fermentation studies, gene expression experiments, and protein production in biotechnology and molecular biology applications.