[Objective]To study the effect of chitosan-CMC composite film on the storage quality of Xiaoguifei mango.[Method]Chitosan membrane,CMC membrane,and chitosan-CMC composite membrane were prepared using chitosan and carboxymethylcellulose sodium (CMC) as film-forming agents. The Xiaoguifei mangoes treated with these three types of membranes were divided into groups A,B and C,and the CK group was set. Storage at room temperature (20±2)℃,the effects of three types of membranes on the storage quality of Xiaoguifei mango were studied by measuring the disease index,decay rate,weight loss rate,acidity,soluble solids and scanning electron microscopy a-nalysis of groups A,B,C and CK.[Result]After 20 days of storage,the disease index,decay rate and weight loss rate of Xiaoguifei mango treated with composite film were the lowest,while the acidity and soluble solids content were the highest. Scanning electron microscopy analy-sis revealed that the composite film had good cross-linking and a uniform and dense structure.[Conclusion]The CMC film had no preservation effect on the storage of Xiaoguifei mangoes,while chitosan-CMC composite film and chitosan film had a preservation effect on Xiaoguifei man-goes,and the preservation effect of chitosan-CMC composite film was greater than that of chitosan film.
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