期刊论文

中文

安徽农业科学

0517-6611

2008

36

3

881-883,937

10.13989/j.cnki.0517-6611.2008.03.099

中南林业科技大学***基金.

本校为其他机构

[目的]探讨猕猴桃果实软化衰老的机理。[方法]用1％、3％Ca（NO_3），处理丰悦和金魁，测定猕猴桃软化衰老过程中淀粉酶、纤维素酶、PG酶活性及果胶和淀粉的含量。[结果]丰悦采后60d淀粉酶活性达到峰值，金魁采后40d达到峰值，为4．57／mgFW，但均低于清水对照。两品种采后50dPG酶活性达到峰值，纤维素酶活性20d达到峰值，均低于对照。对照果实的水溶性果胶在开始阶段上升速度大于钙处理的，钙处理的金魁水溶性果胶含量在80d时低于丰悦，表明丰悦果实软化速度大于金魁。两品种钙处理的猕猴桃果实淀粉含量高于对照。[结论]淀粉和原果胶的降解是猕猴桃果实软化衰老的主要原因。钙处理能降低猕猴桃...

[ Objective] The study aimed to explore the softening consenescence mechanism of kiwifruit fruit. [ Method ] Kiwifruit varieties Fengyue and Jinkui were treated with 1% and 3% Ca （NO3）2 and the amylase,cellulase,PG enzyme activities and pectins and starch contents in the softening consenescence course of kiwifruit were determined. [Result] The amylase activity in Fengyue reached peak value on the 60th d after harvest and that in Jinkui reached peak value on the 40th d after harvest,being 4.57 U/mg（FW） ,but they were all lower than that of C...