Amylose crystal seeds: Preparation and their effect on starch retrogradation
Amylose crystal seeds: Preparation and their effect on starch retrogradation
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直链淀粉晶种的制备及其对淀粉回生的影响
DOI：
10.1016/j.foodhyd.2020.105805
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发表时间：
2020-08-01
影响因子：
10.7
通讯作者：
Tian, Yaoqi
中科院分区：
文献类型：
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作者：
Zhu, Bihua;Zhan, Jinling;Tian, Yaoqi
以直链淀粉为主的短期回生与以支链淀粉为主的长期回生之间的关系仍缺乏具体的实验证实。为了探索这种关系，制备了四种类型的直链淀粉晶体种子（ACS）并将其添加到天然大米淀粉中以干预长期回生。 ACS的平均粒径为200-450nm。在ACS的干预下，回生淀粉的最大相对结晶度从13.64%增加到17.88%。回生淀粉在1047～1022cm(-1)处的吸光度比从0.670增加到最大0.887。回生率常数从0.024 显着增加至0.051 d(-1)。回生淀粉的长程有序、短程有序和回生率均显着增加，表明ACS的干预促进了淀粉的长程回生。这些发现为分析淀粉回生不同阶段之间的相关性提供了数据支持。
The relationship between the short-term retrogradation dominated by amylose and the long-term retrogradation dominated by amylopectin still lacks specific experimental confirmation. In order to explore this relationship, four types of amylose crystal seeds (ACS) were prepared and added to native rice starch to intervene the longterm retrogradation. The average particle size of ACS was 200-450 nm. The maximum relative crystallinity of retrograded starch increased from 13.64% to 17.88% under the intervention of ACS. The ratio of absorbance at 1047 to 1022 cm(-1) of retrograded starch increased from 0.670 to the maximum 0.887. The retrogradation rate constant increased significantly from 0.024 up to 0.051 d(-1). The long-range order, short-range order, and retrogradation rate of retrograded starch all increased significantly, which indicated that the intervention of ACS promoted the long-term retrogradation of starch. These findings provided data support for the analysis of correlation between different stages of starch retrogradation.