Changes in the Storage Quality of Tomatoes in Antimicrobial Chitosan Packaging Cartons under 1-MCP Sustained Release Treatment
LI Baoxiang
LIU Zhijun
SUN Zhuocheng
SUN Yanru
TIAN Ziyu
LIU Ying
WU Manqin
ZHAO Yating
Abstract：To determine a suitable treatment method for tomato preservation,antibacterial chitosan(CS)packaging cartons and 1-methylcyclopropene(1-MCP)sustained-release treatment were used for tomato storage.Changes in the sensory,quality,cell membrane metabolism,and antioxidant indexes of tomatoes were measured during storage.The results indicate that CS+1-MCP treatment can better reduce the weight loss and decay of tomatoes than pure CS or 1-MCP treatments alone during the 0～18 d storage period.In particular,on the 18th day,the weight loss and decay rate of the CS+1-MCP group are 0.97％and 23.3％lower than those of the CS group,respectively,and are 0.58％higher and 6.67％lower than those of the CK+1-MCP group,respectively.1-MCP sustained release treatments also help to maintain the physiological and antioxidant properties of tomatoes.More specifically,on the 18th day,the respiratory intensity of the CS+1-MCP group is 3.37 and 11.4 mg/(kg·h)higher than that of the CK+1-MCP and CS groups,respectively,and the hardness of the CS+1-MCP group is 1.93 and 0.64 kgf/cm2 higher than that of the latter two groups,respectively.At the same time,the CS+1-MCP group also maintains a better appearance and color and higher contents of titratable acid,soluble solids,ascorbic acid,and total phenols.In addition,CS+l-MCP treatment effectively slows the increase of malondialdehyde and cell membrane permeability,delays the peak activities of peroxidase and catalase,and inhibits the their activity reduction in the later stage.In conclusion,CS+1-MCP effectively improves the preservation of storage quality of tomatoes compared with pure CS or 1-MCP treatments alone.Therefore,CS cartons combined with 1-MCP sustained-release treatment can be successfully applied to the postharvest storage and preservation of tomatoes.
Keywords：chitosanantimicrobial packaging1-MCPsustained release treatmentpreservation effects
Publication Date：2025-07-20
Online Publishing Date：2025-09-28(First online date of this platform, not the publication date of the document)
Pages：10( 189-198 )