Correlations between the fine structure, physicochemical properties, and retrogradation of amylopectins from Taiwan rice varieties
Correlations between the fine structure, physicochemical properties, and retrogradation of amylopectins from Taiwan rice varieties
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DOI：
10.1094/cchem.1997.74.1.34
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发表时间：
1997
期刊：
影响因子：
2.4
通讯作者：
Shin Lu;Lingzi Chen;C. Lii
中科院分区：
文献类型：
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作者：
Shin Lu;Lingzi Chen;C. Lii
摘要以台湾14个水稻品种(包括5个籼稻、5个粳稻和4个糯稻品种)为材料，对支链淀粉的超微结构和理化性质进行了研究。结果表明，与粳稻和糯稻相比，籼稻支链淀粉具有较低的相对分子质量、较低的平均聚合度和较低的平均链数。14个水稻品种的最短平均DP为6个葡萄糖单位。支链淀粉的平均链长分别为18-22、15-18和17-20。直链淀粉含量高的籼稻品种的支链淀粉由几条超长的链组成(DP>；100)。这14个品种的支链淀粉化学发光分布可分为两个派别：CL 10-15和CL 40-44。籼稻的支链淀粉具有较高的蓝值和λ最大值，表明有较高比例的支链淀粉以长枝形式存在。三个我的支链淀粉。
ABSTRACT Fourteen varieties of rice from Taiwan, including five Indica, five Japonica, and four waxy cultivars, were used in this study for the examination of fine structure and physicochemical properties of amylopectin. The results indicated that the amylopectin of Indica rice had lower molecular weight, lower average degree of polymerization (DP), and lower average chain number when compared to Japonica and waxy varieties. The shortest average DP was 6 glucose units for all 14 rice varieties. The average chain lengths (CL) of amylopectin were 18–22, 15–18, and 17–20 for Indica, Japonica, and waxy rice, respectively. Indica varieties with high amylose content had amylopectin that comprised a few extra long chains (DP >100). The CL distribution profiles of amylopectins for these 14 varieties could be divided into two factions: CL 10–15 and CL 40–44. Amylopectin of the Indica rice had a relatively high blue value and λmax, implying that a high proportion existed as long branches. The amylopectin of three I...