1-甲基环丙烯结合60Co-γ辐照处理对水晶葡萄保鲜效果的影响

Effects of 1-methylcyclopropene combined with 60Co-γ irradiation treatment on preservation of crystal grape

中文关键词:  水晶葡萄  60Co-γ辐照  1-甲基环丙烯  保鲜

英文关键词:crystal grape  60Co-γ irradiation  1-methylcyclopropene  preservation

中文摘要:

      目的 探究1-甲基环丙烯(1-methylcyclopropene, 1-MCP)结合60Co-γ辐照处理对水晶葡萄的保鲜效果。方法 以水晶葡萄为实验材料, 以烂果率、落粒率、失重率、可滴定酸含量、可溶性固形物含量(total soluble solid, TSS)、丙二醛(malondialdehyde, MDA)含量和质构特性为测定指标, 研究1-MCP处理和1-MCP结合60Co-γ辐照处理对水晶葡萄保鲜效果的影响。结果 与1-MCP单独处理和对照组相比, 1-MCP结合60Co-γ辐照处理能够更好地抑制贮藏期内水晶葡萄烂果率、落粒率及失重率的上升, 延缓水晶葡萄可滴定酸含量、可溶性固形物含量和硬度、弹性、胶黏性及咀嚼性的下降, 并维持更好的内聚性, 且水晶葡萄在贮藏28 d时烂果率和落粒率分别仅为7.52%和0.82%, 但1-MCP结合60Co-γ辐照处理对抑制MDA上升的效果稍弱于单一的1-MCP处理。结论 1-MCP结合60Co-γ辐照处理的保鲜效果好于1-MCP单独处理, 可以显著延缓水晶葡萄的衰老进程, 可为水晶葡萄的贮藏保鲜提供新思路和参考依据。

英文摘要:

      Objective To explore the effects of 1-methylcyclopropene (1-MCP) combined with 60Co-γ irradiation treatment on preservation of crystal grape. Methods Crystal grapes were used as test materials, the rotten fruit rate, grain dropping rate, weight loss rate, titratable acid content, total soluble solid (TSS) content, malondialdehyde (MDA) content and texture characteristics were used as the measurement indexes, and the effects of 1-MCP treatment and 1-MCP combined with 60Co-γ irradiation treatment on the preservation of crystal grapes were studied. Results Compared with single 1-MCP treatment and control group, 1-MCP combined with 60Co-γ irradiation treatment could inhibit the increase of rotten fruit rate, grain dropping rate and weight loss rate, delay the decrease of titratable acid content, TSS content and firmness, springiness, stickiness and chewiness of crystal grape, and maintain better cohesion. Among them, the rotten fruit rate and dropping rate of crystal grapes were only 7.52% and 0.82% at 28 days of storage, respectively. However, the effects of 1-MCP combined with 60Co-γ irradiation treatment were slightly weaker than that of single 1-MCP treatment on inhibiting the increase of MDA. Conclusion The preservation effect of 1-MCP combined with 60Co-γ irradiation treatment is better than that of single 1-MCP treatment, which can significantly delay the aging process of crystal grape, and provide new ideas and reference basis for the storage and preservation of crystal grape.