Comparation on Root Tuber Yield and Starch Characteristics of Sweet Potato Varieties with Different Flesh Colors
Luo Bingxuan
Duan Wenxue
Zhang Haiyan
Xie Beitao
Zhang Liming
Abstract：In order to explore the differences in root tuber yield and starch characteristics among different flesh-colored sweet potato varieties,three representative varieties of each flesh color including white,yellow,red and purple were selected for the experiment in field conditions,and their root tuber yield and starch char-acteristics were compared.The results showed that the white-fleshed sweet potato variety had the highest aver-age drying rate and average dried root tuber yield,while the purple-fleshed variety had the lowest average fresh root tuber yield.The white-fleshed sweet potato variety had the highest average amylopectin content and total starch content,while the purple-fleshed variety had the lowest average amylopectin content and the highest av-erage amylose content.The average peak temperature,starting temperature and termination temperature of pur-ple-fleshed sweet potato variety were the highest,while the average gelatinization enthalpy,peak temperature and starting temperature of red-fleshed variety were the lowest.The average values of D[4,3],D[3,2],D[1,0],Dx(10),Dx(50)and Dx(90)were the highest in white-fleshed variety.In conclusion,white-fleshed varieties had higher dried root tuber yield and total starch content.Among which,the drying rate and total starch content of Jishu 25 and Jishu 36 were significantly higher than those of Shangshu 19,and the dried root tuber yield of Jishu 36 was significantly higher than that of Shangshu 19,but had no significantly different-ce from that of Jishu 25.The total starch content and amylopectin content of white-fleshed sweet potato varie-ties were higher,so they were suitable for processing starch and vermicelli.These conclusions could provide data support for cultivation,processing and utilization of different flesh-colored sweet potato varieties.
Keywords：Sweet potato varieties with different flesh colorsRoot tuber yieldStarch contentStarch characteristics
Publication Date：2025-11-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 40-45 )