Maintaining freshness with 1-MCP treatment for storage of Actinidia delicious ‘Xuxiang’ kiwifruit
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摘要: 以浙江主产徐香猕猴桃Actinidia deliciosa Xuxiang为试材,研究不同体积分数1-甲基环丙烯(1-MCP)处理(0,0.3,0.6,0.9,1.2 LL-1)对猕猴桃低温储藏期间果实品质和生理生化特性的影响。结果表明:在冷藏条件下,适宜体积分数的1-甲基环丙烯处理可以延缓徐香猕猴桃维生素C的下降以及可溶性固形物和总糖的上升;可较好地保持果实硬度和可滴定酸;降低果实呼吸强度和乙烯释放速率,并推迟两者高峰期的到来,减缓其衰老进程;同时可抑制储藏期间丙二醛的升高;提高果实的超氧化物歧化酶和过氧化物酶活性,较好地保持细胞膜完整性。综合考虑认为:0.9 LL-1的-鄄甲基环丙烯处理对徐香猕猴桃低温储藏保鲜效果较好。图6参21Abstract: To determine the effect of different 1-MCP concentrations (0 LL-1,0.3 LL-1,0.6 LL-1,0.9 LL-1 and 1.2 LL-1 ) on quality as well as physiological and bio-chemical characteristics during cold storage,a Zhejiang variety of Actinidia deliciosa of Xuxiang kiwifruit was studied. Results showed that 0.9 LL-1 1-MCP was favorable for keeping of Xuxiang kiwifruit quality. At the end of storage,in comparison with the control,the treatment of 0.9 LL-1 can significantly improved Vc content in 0.19 mgg-1 and total sugars content in 25.0 gkg-1;0.9 LL-1 1-MCP also helped improved titratable acidity content in 0.17%. Additionally,0.9 LL-1 1-MCP reduced rates of respiration content in 7.1 mgkg-1h-1 and ethylene production content in 1.0 nLg-1h-1 and delayed time to respiration and ethylene peaks. In addition,1-MCP significantly restrained increases of 3,4-methylenedioxyamphetamine (MDA),increased superoxide dismutase (SOD) and peroxidase (POD) activity and maintained integrity of the cell membrane well (P<0.05).[Ch,6 fig. 21 ref.]
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https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2013.03.010
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