紫球藻多糖涂膜处理对南湖菱的保鲜作用  

Preservation effect of Porphyridium cruentum polysaccharide coating treatment on Trapa acornis Nakano

作　　者：杨宁 李坤 章真 陈静芸 吴世林 陈冉 姚丽萍 刘晓军 张荣庆 YANG Ning;LI Kun;ZHANG Zhen;CHEN Jingyun;WU Shilin;CHEN Ran;YAO Liping;LIU Xiaojun;ZHANG Rongqing(College of Aquaculture and Life Sciences,Shanghai Ocean University,Shanghai 201306,China;Zhejiang Tsinghua Yangtze River Delta Research Institute,Zhejiang Provincial Key Laboratory of Applied Enzymes,Jiaxing 314000,China)

机构地区：[1]上海海洋大学水产与生命学院,上海201306 [2]浙江清华长三角研究院,浙江省应用酶学重点实验室,浙江嘉兴314000

出　　处：《食品与发酵工业》2024年第24期123-132,共10页Food and Fermentation Industries

基　　金：浙江省基础公益研究计划项目(LGN22C190010);浙江清华长三角研究院青年业务骨干教育培养基金(ZJY-2020-A-NS-08)。

摘　　要：为探究紫球藻多糖涂膜对南湖菱贮藏期间的保鲜效果,该文以南湖菱果实为试材,采用5 mg/mL和10 mg/mL的紫球藻多糖进行涂膜处理,并对其在不同贮藏时期的11个品质及生理指标进行详细测定和分析。结果表明,紫球藻多糖涂膜能降低南湖菱果实的失重率,延缓了果实内可溶性糖、可溶性蛋白、总酚和维生素C等关键成分含量的下降趋势,维持了较高可滴定酸含量,并抑制了果实贮藏期间的丙二醛和抗氧化物酶活性的积累。采用主成分分析法将各种指标简化为2个主成分,累积方差贡献率为86.364%,建立综合评价模型,结果显示,可溶性糖含量、多酚氧化酶活力、过氧化物酶活力、丙二醛含量和失重率指标之间有较强的相关性;5 mg/mL的多糖涂膜组的综合得分最佳,有利于南湖菱果实的贮藏保鲜。该研究为紫球藻多糖在食品贮藏保鲜中的应用提供了数据和理论支持,为南湖菱的运输和产业化奠定了理论依据。Trapa acornis Nakano is a unique aquatic economic plant in Jiaxing city,Zhejiang province.It has a sweet and delicious taste and is nutritionally rich.However,it is highly susceptible to rot and deterioration after harvesting.To investigate the preservation effect of the coating of Porphyridium cruentum polysaccharide on Trapa acornis Nakano during storage,this study used Trapa acornis Nakano fruits as the test material.Coating treatments with Porphyridium cruentum polysaccharide at concentrations of 5 mg/mL and 10 mg/mL were applied,and 11 quality and physiological indicators were meticulously measured and analyzed at different storage periods.Results indicated that the Porphyridium cruentum polysaccharide coating reduced the weight loss of Trapa acornis Nakano fruits,delayed the decline in key components such as soluble sugars,soluble proteins,total phenols,and vitamin C,maintained a higher titratable acid content,and inhibited the accumulation of malondialdehyde and antioxidant enzyme activity during fruit storage.Principal component analysis simplified various indicators into two principal components,with a cumulative variance contribution rate of 86.364%.A comprehensive evaluation model was established,which revealed a strong correlation among soluble sugar content,polyphenol oxidase activity,peroxidase activity,malondialdehyde content,and weight loss rate.The group with a 5 mg/mL polysaccharide coating showed the best comprehensive score,contributing to the preservation of Trapa acornis Nakano fruits during storage.This study provides data and theoretical support for the application of Porphyridium cruentum polysaccharide in food storage and preservation,laying the theoretical foundation for the transportation and industrialization of Trapa acornis Nakano.

关 键 词：南湖菱 紫球藻多糖 涂膜 保鲜 主成分分析 

分 类 号：TS254.58[轻工技术与工程—水产品加工及贮藏工程]