Numerous vitamins are currently produced by industrial fermentations. Vitamin B12, for example, is used to prevent certain types of anemia in the body, and riboflavin is used to encourage metabolic processes in the body. Both are produced by bacteria cultivated in industrial plants. Yeasts are rich in B vitamins and are used as a food supplement. Among the amino acids produced by microorganisms in industrial processes are glutamic acid and lysine. Both are used as dietary growth supplements.
