【摘要】 利用正丁醇法分离慈姑直链淀粉与支链淀粉,并对慈姑直链淀粉进行了深入研究。试验结果表明:慈姑直链淀粉与碘的络合物最大吸收波长为620.5nm,其蓝值为0.844,特性黏度[η]为127mL/g。测得慈姑直链淀粉的分子结构参数为:聚合度DP=640,黏均分子质量η=3.11×105。更多还原

【Abstract】 Purified amylose and amylopectin of arrowhead starch were successively separated by n-butanol recrystallization method.The study on arrowhead amylose shows that the maximum absorption wavelength of iodine-amylose complexes(λmax) was 620.5nm,the blue value was 0.844 and limiting viscosity number [η]was 127mL/g.The molecular structure parameters of the amylose were also determined:the average degree of polymerization(DP) was 640 and the viscosity-average molecular weight η was 3.11×105 u.更多还原