Chitosan combined with other organic matters: Other organic matters such as ethanol, wax, and so on, could also improve the properties of chitosan coating in fruit preservation. Artificially inoculated single berries or clusters were immersed in chitosan, ethanol, or their mixture. The tests with small clusters were carried out to simulate commercial prolonged cold storage of table grapes. The combination of reduced doses of chitosan and ethanol improved the control of gray mold of table grapes compared to their application
alone, and the effect was at least additive and at times synergistic