[Objective]To determine the effects of different pre-cooling methods combined with 1-methylcyclopropene(1-MCP)on the pre-cooling rate and storage quality of Red Globe Grape.[Methods]Red Globe Grape was precooled by tunnel-type in-situ differential pressure precooling device,precooled storage turnover box and cold storage combined with 1.5 μL/L 1-MCP fumigation,no 1-MCP fumigation was used as control(CK).The fruits were stored at(0±0.5)℃,relative humidity 85%,and the changes of physiological indexes were measured every 20 days.[Results]The cooling rate of red grape treated by tunnel-type in-situ differential pressure precooling and pre-cool storage turnover box was significantly faster than that of cold storage,1.5 μL/L 1-MCP combined with tunnel differential pressure pre-cooling and pre-cool storage turnover box had lower fruit decay rate and granulation rate than that of 1-MCP combined with cold storage and CK.It had a positive effect on the retention of titratable acid(TA)and soluble solid(SSC)con-tents,inhibited the respiration intensity and malondialdehyde(MDA)content of the fruit,stimulated the activity of Peroxidase(POD),better maintained fruit quality and nutrients and effectively delayed the aging process of fruit.[Conclusion]1.5 μl/L 1-MCP combined with tunnel-type in-situ differential pressure precooling can better delay the post-ripening,softening and senescence process of Red Globe Grape,and maintain the fruit quality and nutritional components.
关键词
红提葡萄/1-甲基环丙烯/不同预冷方式/品质
Key words
red globe grape/1-MCP/different pre-cooling methods/quality
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基金项目
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Scientific and technological breakthrough plan in key fields of the Corps(2020AB085)