摘要
以高直链玉米淀粉为原料,醋酸酐为乙酰化试剂,浓硫酸为催化剂,利用微波辐射技术合成高取代度的醋酸酯淀粉。通过正交实验确定了高取代度醋酸酯淀粉的最佳合成工艺为:绝干高直链玉米淀粉20g,醋酸酐70mL,浓硫酸用量0.4mL,辐射时间6min,辐射功率600W,制得取代度为1.4428的醋酸酯淀粉。并对高取代度醋酸酯淀粉的特性粘度和溶解性等性质进行了测定分析。
With the high amytose starch maize as a material,the acetic anhydride as the acetylize reagent and the strong sulfuric acid as the catalyst,synthesis process test about the starch acetate with high degree of substitution and its properties were studied.The optimum conditions were confirmed by orthogonal experiment-high amylose starch maize 20g, acetic anhydride 70mL, amount used of strong sulfuric acid was 0.4mL,radiation time was 6min, radiation power was 600W.On these conditions,degree of substitution was 1.4428.And the nature of starch acetate of high degree of substitution was analyzed by determination limiting viscosity and solubility.
出处
《食品工业科技》
CAS
CSCD
北大核心
2009年第6期257-259,262,共4页
Science and Technology of Food Industry
关键词
高直链淀粉
高取代度
醋酸酯淀粉
微波辐射
醋酸酐
high amylose starch maize
high degree of substitution
starch acetate
microwave
acetic anhydride
