Sugars, methionine, and ammonium salts are used as C,S,N sources. Genetically modified Penicillium chrysogenum is employed for penicillin production.
In industrial settings, sugars, methionine, and ammonium compounds are used to provide carbon, sulfur, and nitrogen for various applications. A genetically engineered strain of Penicillium chrysogenum is specifically designed to produce penicillin through a complex biochemical process.