酚类物质和可溶性蛋白对苹果浓缩汁后混浊的影响  

The Influences of Phenol and Soluble Protein on the Post Concentration Haze of Apple Juice Concentrate

作　　者：孙海峰[1,2] 孙家财[2] 于士梅[1] 周亚平[1] 梁美霞[1] 戴洪义[1] 

机构地区：[1]青岛农业大学园艺学院,山东青岛266109 [2]青岛农业大学海都学院,山东莱阳265200

出　　处：《食品与发酵工业》2009年第6期23-27,共5页Food and Fermentation Industries

基　　金：山东省良种农业工程资助项目(50208);国家苹果产业技术体系资源创新与遗传改良功能研究室岗位科学家经费项目

摘　　要：测定了鲁加1号和鲁加5号苹果浓缩汁在贮藏过程中可溶性蛋白质含量、总酚含量、黄烷醇类多酚含量、缩合单宁含量和几种小分子酚类物质的含量的变化。结果表明:苹果浓缩汁中总酚含量、可溶性蛋白含量以及缩合单宁的含量随着贮藏时间的延长而降低,而黄烷醇类多酚的含量则是呈先降低然后又上升的趋势,小分子酚类物质则因苹果品种的不同和小分子酚类物质的不同存在很大的差异,但总体的变化呈下降趋势。相关性分析表明:可溶性蛋白含量、黄烷醇类多酚含量和表儿茶素的含量与浊度值呈极显著正相关,咖啡酸的含量与浊度值呈显著正相关,阿魏酸的含量与浊度值呈显著负相关;在贮藏过程中黄烷醇类多酚、咖啡酸和表儿茶素含量的变化量与浊度值的变化量呈极显著负相关,可溶性蛋白含量的变化量与浊度值的变化量呈显著负相关。This paper discusses the factors infuence the post concentration haze of apple juice. The contents of soluble proteins, the total phenol, polyphenol contents of flavanols, condensed tannins, and the several small phenolic compound were measured during the storage. The contents of total phenol, soluble proteins, and condensed tannins were decreased; the polyphenol contents of flavanols was reduced at the beginning of storage and then increased. Small phenolic compounds changed by the variety of the apple and type of the specific compound. However, the total contents of small phenolic was continuously decreased. Correlation analysis indicated that the content of soluble protein contents, phenolic contents of flavanols and Epieateehin was highly significantly positive correlation with the turbidity value; the content of Caffeic acid was also significantly positive correlation with the turbidity value, but the content of Ferullic acid was significantly negative correlation with the turbidity value; during the storage, polyphenol content of favanols, Caffeic acid and Epicatechin content changes showed significantly negative correlation with turbidity value. The changes of soluble protein contents had significant negative correlation with changes of turbidity value.

关 键 词：总酚 黄烷醇类多酚 可溶性蛋白质 缩合单宁 小分子酚类物质 后混浊 

分 类 号：TS255.44[轻工技术与工程—农产品加工及贮藏工程] S571.1[轻工技术与工程—食品科学与工程]