首页|期刊导航|中国农业科学（英文版）|Variation in Gelatinization Characteristics of Storage Root Starch During Sweetpotato Growth and Development
中国农业科学（英文版）2005，Vol.4Issue(6)：436-442,7.
Variation in Gelatinization Characteristics of Storage Root Starch During Sweetpotato Growth and Development
Variation in Gelatinization Characteristics of Storage Root Starch During Sweetpotato Growth and Development
摘要
Abstract
The differential scanning calorimetry (DSC) and rapid visco-analyzer (RVA) were used to determine the starch gelatinization characteristics during the growth of three sweetpotato cultivars. The results showed that the starch contents of three sweetpotato cultivars all decreased as growth progressed. Changes of the amylose contents differing in harvesting dates should be discriminated according to the cultivars. At the early harvests amylose contents of Xushul8 and Zheda9201were relatively high, but those of Zhe3449 were low. As the growth duration of sweetpotatoes prolonged, the peaks of DSC thermograms tended to occur at a low temperature and not to be so obstrusive with the increased width of the peak.Obvious decreases were observed, values of onset, peak and conclusion temperatures, as well as enthalpy of phase transitions, as growth time lengthened. The peak viscosities, as determined through RVA, showed a rising tendency as growth progressed. In addition, statistical analysis revealed that there were correlations between the amylose content and gelatinization characteristics to some extent, which were affected by genotypes evidently.关键词
Sweetpotato/Starch gelatinization characteristics/Growth duration/DSC/RVAKey words
Sweetpotato/Starch gelatinization characteristics/Growth duration/DSC/RVA分类
农业科技引用本文复制引用
HUANG Hua-hong,LU Guo-quan,ZHENG Yi-fan..Variation in Gelatinization Characteristics of Storage Root Starch During Sweetpotato Growth and Development[J].中国农业科学（英文版）,2005,4(6):436-442,7.基金项目
Financial support is kindly provided by the National 863 Program (2004AA241180) and the Science and Technology Department of Zhejiang Province, P.R.China. （2004AA241180）
