甘薯贮藏过程淀粉酶活性变化及对薯块芽萌发的影响

福建农业学报 ›› 2010, Vol. ›› Issue (6): 699-702.

甘薯贮藏过程淀粉酶活性变化及对薯块芽萌发的影响

唐君, 周志林, 赵冬兰, 曹清河

江苏徐州甘薯研究中心, 江苏徐州, 221121

收稿日期:2010-08-05 修回日期:2010-11-08 出版日期:2010-12-15 发布日期:2010-12-15
基金资助:
现代农业产业技术体系建设专项(nycytx-16);“948”国外甘薯资源的引进与评价利用(2006-G21-07);农业部农作物保护项目(NB09-2130135-20);国家科技支撑计划(2006BAD13B10-07)

Change of amylase content in storage and its effect on germination of sweet potatoes

TANG Jun, ZHOU Zhi-lin, ZHAO Dong-lan, CAO Qing-he

Xuzhou Sweetpotato Research Center of Jiangsu Province, Xuzhou, Jiangsu 221121, China

Received:2010-08-05 Revised:2010-11-08 Online:2010-12-15 Published:2010-12-15

摘要/Abstract

摘要： 研究甘薯整个贮藏过程中淀粉酶活性变化及对块根发芽的影响,结果表明:对经过高温愈合和未经过高温愈合的甘薯块根,从收获到收获后92d,总淀粉酶的活性比较低,且比较稳定;但是,92d后总淀粉酶活性逐渐增大,活性稍有波动;不同品种淀粉酶活性除了高温愈合的苏薯8号外,均在第152d达到了最大,高温愈合的苏薯8号总淀粉酶活性则在第112d达到最大。除高温愈合的徐薯23和苏薯8号α-淀粉酶在第112d达到最大外,其他高温愈合和未经高温愈合的品种的α-淀粉酶活性分别在刚收获或第152d达到最大。总淀粉酶活性与薯块发芽速度不成正比,但是在112～152dα-淀粉酶平均含量较高的高温处理较非高温处理材料发芽要快。

关键词: 甘薯, 淀粉酶, 发芽

Abstract: Increasing demand by the food and biomass energy industries has generated a great deal of interest in high-starch sweet potato varieties.This study was to determine the change of amylase content during storage and its correlation with the germination of sweet potatoes.The results showed that all varieties had a peak α-amylase level at harvest and germination.The α-amylase content was stable whether the sweet potatoes were heat-treated or not.The total amylase was constantly low up to 92 days in storage.It increased gradually afterward.The amylase content was lower when subjected to a high-temperature treatment.There was no direct relation found between amylase content and germination rate.However,the high-temperature-treated sweet potatoes had a higher percent of α-amylase during the storage from 112th to 152nd day,as well as a greater sprouting rate than those without the high-temperature treatment.

Key words: Sweet potato, amylase, germination

中图分类号:

S531

唐君, 周志林, 赵冬兰, 曹清河. 甘薯贮藏过程淀粉酶活性变化及对薯块芽萌发的影响[J]. 福建农业学报, 2010, (6): 699-702.

TANG Jun, ZHOU Zhi-lin, ZHAO Dong-lan, CAO Qing-he. Change of amylase content in storage and its effect on germination of sweet potatoes[J]. Fujian Journal of Agricultural Sciences, 2010, (6): 699-702.

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