Composite coating of chitosan and biological control agents Biological control with antagonistic microorganisms has been considered the most promising alternative method for inhibition of postharvest diseases in recent years, especially for control of woundinvading pathogens.At present there are several commercial products available in the market for postharvest use, such as Biosave (Pseudomonas syringae) registered in the USA and “Shemer” (Metschnikowia fructicola) registered in Israel