甘薯块根膨大后期β-淀粉酶和淀粉含量相关性分析  

Analysis on relativity between the starch contents and β-amylase activities during storageroot development later stage of sweetpotato

作　　者：陈显让[1,2] 李红兵[2] 康乐[2,3] 郭尚洙 邓西平[2] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨凌712100 [2]黄土高原土壤侵蚀与旱地农业国家重点实验室,中国科学院水利部水土保持研究所,陕西杨凌712100 [3]西北农林科技大学林学院,陕西杨凌712100 [4]韩国生命工学研究院,韩国大田305-806

出　　处：《食品工业科技》2013年第19期93-96,共4页Science and Technology of Food Industry

基　　金：国际科技合作项目(2010DFA91930)

摘　　要：为了研究甘薯β-淀粉酶和淀粉含量相关性,对不同基因型的甘薯薯块在果实膨大期到收获期期间淀粉率和β-淀粉酶活性进行测定。结果表明:多数甘薯薯块淀粉率呈升高趋势,升幅为1到5个百分点,而β-淀粉酶活性多呈下降趋势,并且不同品系间的酶活性差异较大。相关性分析表明,甘薯膨大后期,薯块中淀粉率变化和β-淀粉酶活性变化有一定相关性,但不同基因型的相关性正负和显著性有所区别。For the purpose of investigated the correlation of β-amylase activities and starch contents,the starch contents and β-amylase activities in the roots of different genotypes of sweetpotato during fruit-development stage were measured.The results showed that the starch contents of most genotype sweetpotatoes increased during the 28d period with the rate of 1%-5%.1n the meantime, β-amylase activities of most sweetpotato strains decreased significantly.Correlation analysis indicated that the changes of the starch contents were related to the changes of β-amylase activities, but the plus-minus relativities and the significances varied among those different genotypes.

关 键 词：甘薯 果实膨大期 收获期 淀粉率 淀粉酶活性 

分 类 号：TS255.1[轻工技术与工程—农产品加工及贮藏工程]