热水处理对新余蜜橘采后贮藏品质的影响  

Effects of hot water dipping on postharvest storage quality of Xinyu tangerines during cold storage

作　　者：陈楚英[1] 付永琦[1] 万春鹏[1] 刘善军[1] 陈金印[1,2] CHEN Chuying;FU Yongqi;WAN Chunpeng;LIU Shanjun;CHEN Jinyin(Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits andVegetables,Jiangxi Agricultural University,Nanchang 330045,China;Pingxiang University,Pingxiang 337055,China)

机构地区：[1]江西农业大学江西省果蔬保鲜与无损检测重点实验室,江西南昌330045 [2]萍乡学院,江西萍乡337055

出　　处：《食品与发酵工业》2019年第5期140-144,共5页Food and Fermentation Industries

基　　金：江西省柑橘产业技术体系(jxars-07);江西省"赣鄱英才555工程"(2012);江西省教育厅科技落地计划项目(111)

摘　　要：为探明热水处理对新余蜜橘贮藏品质的影响,采用主成分分析法分析热水(53℃、3 min)处理对冷藏条件下[(5±0.5)℃,80%～95%RH]贮藏120 d的‘彭家39号’新余蜜橘采后贮藏品质的影响。结果表明,热水处理可减少新余蜜桔采后腐烂的发生,延缓可溶性固形物(total soluble solids content,TSS)、可滴定酸(titratable acidity, TA)、维生素C (Vitamin C, Vc)含量的降解,抑制果实呼吸速率及丙二醛(malondialdehyde, MDA)的积累,提高果实抗氧化酶如超氧化物歧化酶(superoxide dismutase, SOD)、过氧化氢酶(catalase, CAT)和过氧化物酶(peroxidase, POD)活性,延缓果实后熟衰老。主成分分析和综合得分显示,冷藏60 d后,对照组新余蜜橘的综合品质急剧下降,而热水处理可使果实贮藏时间延长20 d左右。因此,热水处理可作为一种延长新余蜜橘贮藏寿命和维持果实采后品质的理想措施。In order to explore the effects of hot water on the storage quality of Xinyu tangerines by principle component analysis, Xinyu tangerines were treated with hot water dipping (HWD) for 3 min at 53 ℃ before storing them at (5±0.5)℃ and at 80%-95% relative humidity for 120 days. The results showed that HWD treatment could reduce the incidence of postharvest deterioration, attenuated the degradation of total soluble solids (TSS), titratable acidity (TA), and vitamin C content, inhibited the respiration rate of the fruit and the accumulation of malondialdehyde (MDA). Also, activities of antioxidant enzymes, such as superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) were enhanced, which delayed fruit ripening. Principal component analysis revealed that the comprehensive quality of Xinyu tangerines exhibited a sharp decrease in the control group after 60 days of cold storage, while HWD treatment could prolong the shelf life for about 20 days. Therefore, HWD treatment can be an ideal method for extending the storage life and maintaining the postharvest quality of Xinyu tangerines.

关 键 词：热水 新余蜜橘 贮藏品质 主成分分析 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]