Vitamin B5(pantothenic acid bulk) is converted into coenzyme A (CoA) or acyl carrier protein (ACP) in the body to participate in fatty acid metabolism. CoA is a cofactor for more than 70 enzymes in organisms (about 4% of total enzymes), and bacteria also need CoA to build cell walls. In metabolism, CoA mainly plays the function of acyl carrier, participates in sugar, fat, protein and energy metabolism, and can also affect the localization, stability and activity of proteins by modifying proteins. CoA provides 90% of the energy of the organism,pantothenic acid bulk.