知识与财富的链接
采用高效液相排阻色谱技术探索不同淀粉中支链淀粉精细结构与其慢消化性能的关系。结果表明：支链淀粉结构中的链长分布Fr Ⅰ(DP ＞ 30)、Fr Ⅱ(13 ＜ DP ＜ 30)均与慢消化淀粉(SDS)呈极显著正相关(r ＝ 0.909,P ＜0.05;r ＝ 0.847,P ＜ 0.05);Fr Ⅲ(DP ＜ 13)与SDS 呈极显著负相关(r= － 0.869,P ＜ 0.05)。支链淀粉的分支链长分布与淀粉低血糖特性关系密切,可采用基因工程调控淀粉链合成从而开发高营养品质的新淀粉品种。
The correlation between starch digestibility and fine structure of amylopectin was investigated in this study.Slowly digestible starch(SDS) fraction was positively correlated(r = 0.909,P < 0.05;r = 0.847,P < 0.05) with FrI(DP > 30) and FrII(13 < DP < 30),respectively,and negatively correlated(r =-0.869,P < 0.05) with FrIII(DP < 13).Thus,the chain length distribution of debranched amylopectin exhibited a relationship with low glycemic index.These investigations revealed a molecular basis of fine structural v...
