壳聚糖复合涂膜对蓝莓保鲜效果的影响  

Effect of chitosan composite coating on preservation of blueberry

作　　者：吕静祎 白琳 张良 韩絮舟 徐冬乐 丁思杨 葛永红 李灿婴 LV Jingyi;BAI LIN;ZHANG Liang;HAN Xuzhou;XU Dongle;DING Siyang;GE Yonghong;LI Canying(College of Food Science and Technology,Liaoning Province Key Laboratory of Food Safety,National&Local Joint Engineering Research Center of Storage,Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products,Bohai University,Jinzhou 121013,China;Jinzhou Inspection and Testing Certification Center,Jinzhou 121004,China)

机构地区：[1]渤海大学食品科学与工程学院,辽宁省食品安全重点实验室,生鲜农产品贮藏加工及安全控制技术国家地方联合工程研究中心,辽宁锦州121013 [2]锦州市检验检测认证中心,辽宁锦州121004

出　　处：《渤海大学学报（自然科学版）》2020年第4期296-302,共7页Journal of Bohai University:Natural Science Edition

基　　金：辽宁省大学生创新创业训练项目(No:2017101670162);辽宁省科技厅重点研发项目(No:2017205002);国家自然科学基金项目(No:31501537);渤海大学博士科研启动金项目(No:0515bs033-1);国家重点研发计划项目(No:2017YFD0400106)。

摘　　要：以‘北陆’蓝莓为试材,研究采用1%壳聚糖+0.5%抗坏血酸复配中草药提取物制成的可食用涂膜液处理对其在低温(0±0.2℃)贮藏过程中保鲜效果的影响.结果表明:壳聚糖复合涂膜处理能够减缓蓝莓果实贮藏期内硬度、可溶性固形物(total soluble solids,TSS)含量、可滴定酸(titritable acidity,TA)含量及含水量的下降,延缓丙二醛(malondialdehyde,MDA)含量上升,推迟呼吸高峰及乙烯高峰的出现时间,同时减缓VC及总酚含量的下降,有效地降低多酚氧化酶(polyphenol oxidase,PPO)的活性并抑制其活性高峰的出现,提高过氧化物酶(peroxidase,POD)和过氧化氢酶(catalase,CAT)的活性.表明壳聚糖复合涂膜处理能有效保持蓝莓果实的贮藏品质,延缓其成熟衰老进程,从而延长货架期.The effect of 1%chitosan coating combined with 0.5%Vc and the Chinese herbal medicine extracts on the preservation of‘Beilu’blueberry during storage at low temperature(0±0.2℃)were studied.The results showed that,compared with the control,the chitosan composite coating treatment could slow down the decrease in firmness,soluble solids(TSS)content,titratable acid(TA)content and water content of the blueberry fruit during storage,delay the increase in malondialdehyde(MDA)content,postpone the peaks of respiration and ethylene production,simultiniously decelerate the decrease in Vc content and total phenols,effectively reduce the activity of polyphenol oxidase(PPO)and inhibit its activity peak,and promote the activities of peroxidase(POD)and catalase(CAT).Therefore,the chitosan composite coating treatment could effectively maintain the storage quality of the blueberry fruit,delay its ripening and senescence process,and thus extend the shelflife.

关 键 词：蓝莓 壳聚糖 中草药提取液 复合涂膜 贮藏品质 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]