Influence of Elevated Potassium Fertilization on Structural and Functional Properties of Sweet Potato Root Tuber Starch

文献类型： 外文期刊

第一作者： Guo, Ke

作者： Guo, Ke;Liu, Shuai;Zhang, Qian;Yu, Yang;Ma, Peiyong;Jia, Zhaodong;Bian, Xiaofeng;Guo, Ke;Zhang, Long;Wei, Cunxu;Guo, Ke;Zhang, Long;Wei, Cunxu

作者机构：

关键词： sweet potato; potassium fertilizer; starch; structural properties; functional properties

期刊名称：FOODS （ 影响因子：5.1； 五年影响因子：5.6 ）

ISSN：

年卷期： 2024 年 13 卷 23 期

页码：

收录情况： SCI

摘要： Nine sweet potato varieties with different flesh colors were cultivated under uniform environmental conditions with potassium (K) fertilizer treatments at levels of 0, 22.5, and 45 kg/ha. The structural and functional properties of the starches were subsequently analyzed. The soluble sugar content in the dry root tuber increased, with higher K levels in most varieties. Amylose content decreased in Sushu16 but increased in Ningzishu1, with no significant differences observed in other varieties across different K levels. Elevated K levels had no effect on starch protein content, crystalline type, or gelatinization enthalpy. The impact of K fertilizer on starch thermal and pasting properties varied among the varieties. PLSR and PLS-DA analyses revealed that genotype background was the primary factor influencing starch properties. This research will provide a reference for the improvement of sweet potato production quality and efficiency and a scientific basis for the cultivation and utilization of sweet potato root tubers.

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