1-MCP结合气调包装对塔西提柠檬采后保鲜的研究

以瑞丽塔西提柠檬为试材,探究1-甲基环丙烯(1-MCP)结合不同气调保鲜袋处理对其贮藏品质的影响。分别采用不同浓度的1-MCP(0、62.5、125.0、250.0 mg/L)结合PBI保鲜袋和微孔膜处理柠檬,将柠檬置于15℃恒温箱中贮藏,定期(3 d)测定柠檬的失重率、硬度、可溶性固形物含量、呼吸强度、VC含量、过氧化物酶(POD)活性及可滴定酸等相关指标,比较不同处理方式的贮藏保鲜效果。结果表明:62.5 mg/L 1-MCP结合PBI保鲜袋能有效抑制柠檬果实硬度、失重率、VC含量的降低;250.0 mg/L 1-MCP结合PBI保鲜袋能有效抑制柠檬可溶性固形物含量的降低;结合生产的使用成本等因素进行综合考虑,确定62.5 mg/L 1-MCP结合PBI保鲜袋处理为塔西提柠檬较好的保鲜方式。

1-甲基环丙烯结合膜气调处理对河口香蕉贮藏品质的影响

以云南河口香蕉为试验材料,将不同质量浓度(0.00,0.08,0.16,0.32g/L)的1-甲基环丙烯(1-MCP)结合PBI气调保鲜袋、微孔膜包装河口香蕉,并于15℃下恒温贮藏,研究贮藏期间香蕉可溶性固形物、硬度、病情指数、转黄指数、POD酶(过氧化物酶)、失重率、呼吸强度、可滴定酸的变化规律。结果表明:1-MCP+PBI气调保鲜袋延缓可溶性固形物、病情指数、转黄指数、POD酶活性较其他处理差异显著(P≤0.05);1-MCP+微孔膜能显著延缓果实硬度的下降(P≤0.05),抑制可滴定酸含量的上升(P≤0.05),但对香蕉失重率及可溶性固形物含量无显著影响。其中,0.16g/L 1-MCP+PBI气调保鲜袋处理是最为理想的河口香蕉保鲜方式。

Effect of Different Preservation Treatments on the Room Temperature Storage of “Gala” Apple

In this experiment," Gala" apples were used as test materials,and 1-MCP treatment and fresh-keeping film packaging were used for storage at room temperature.The results showed that the storage effects of 1-MCP treatment and fresh-keeping film packaging were better than those of the control.Moreover,1-MCP treatment was better than fresh-keeping film packaging in hardness,soluble solids content,titratable acid content,and inhibition of ethylene release.