›› 2010, Vol. 22 ›› Issue (5): 613-617.

• 论文 • Previous Articles     Next Articles

Correlation between ethanol yield and quality traits of sweetpotato

SUN Jian;ZHANG Cui-ying;YUE Rui-xue;LI Hong-min;ZHANG Ai-jun   

  1. 1 Institute of Sweetpotato, Chinese Academy of Agricultural Sciences, Xuzhou 221121, China; 2Xuzhou Institute of Technology, Xuzhou 221008, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-09-25 Published:2010-09-25

Abstract: Eleven fresh sweetpotato varieties and fourteen sweetpotato powder varieties were selected to study the relationship between the quality traits like dry matter, starch, protein, soluble sugar, reduced sugar content and ethanol yield with correlation analysis methods. The results showed that difference of ethanol yield was significant among sweetpotato varieties, ethanol yield showed significantly positive correlation with dry matter content(P<0.01), starch content(P<0.05) and protein content(P<0.05) of fresh sweetpotato, and the correlation between ethanol yield and quality traits of sweetpotato powder was not significant. The regression equation between ethanol yield and fresh sweetpotato quality traits was established as follows: Y=2.086+0.162X1+1.064X2+0.248X3 (P<0.05)(Y-ethanol yield, X1-starch, X2-protein, X3-reduced sugar). The regression equation between ethanol yield and quality traits of sweetpotato powder was not significant.

Key words: sweetpotato (Ipomoea batatas(L.) Lam.), ethanol, quality, correlation analysis