Influence of Elevated Potassium Fertilization on Structural and Functional Properties of Sweet Potato Root Tuber Starch
文献类型： 外文期刊
作者： Guo, Ke 1 ; Liu, Shuai 1 ; Zhang, Long 2 ; Zhang, Qian 1 ; Yu, Yang 1 ; Ma, Peiyong 1 ; Jia, Zhaodong 1 ; Wei, Cunxu 2 ; Bian, Xiaofeng 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Food Crops, Nanjing 210014, Peoples R China
2.Yangzhou Univ, Key Lab Crop Genet & Physiol Jiangsu Prov, Jiangsu Key Lab Crop Genom & Mol Breeding, Yangzhou 225009, Peoples R China
3.Yangzhou Univ, Coinnovat Ctr Modern Prod Technol Grain Crops Jian, Joint Int Res Lab Agr & Agriprod Safety, Minist Educ, Yangzhou 225009, Peoples R China
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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