Chitosan has good effect on the preservation of fruits and vegetables.Chitosan as the main component is prepared as a preservative,which is used in the form of coating for the preservation of fruits and vegetables.The concentration of chitosan is 2.5％,and the pH of the preservative is 5.5.The study conducts sodium dehydroacetate as the anti-mold agent,obtains a chitosan mixed with environmental protection fruit and vegetable preservative for the preservation of horn pepper.The rot rate is reduced to 18.83％,which can effectively reduce the low rot index of horn pepper,obviously control the after-cooking,inhibit the respiration and slow down the loss of VC and sugar.
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