羟丙基魔芋淀粉合成工艺研究

以魔芋淀粉和环氧丙烷为原料,以乙醇为溶剂,对羟丙基魔芋淀粉合成工艺进行了研究。考察了环氧丙烷用量、反应时间、反应温度、氢氧化钠用量、无水硫酸钠用量对羟丙基魔芋淀粉取代度和反应效率的影响。实验结果表明,环氧丙烷用量、反应时间、反应温度、氢氧化钠用量、无水硫酸钠用量对羟丙基魔芋淀粉取代度均有影响,以乙醇为溶剂制备羟丙基魔芋淀粉方法可行。采用分光光度法测定羟丙基魔芋淀粉取代度。

The synthesis of hydroxypropyl amophophallus starch by using amophophallus starch and epoxypropane as raw materials, sodium hydroxide as catalyst and ethanol as solvent, was studied in this paper. The effect of some factors such as reaction time, amount of sodium hydroxide, reaction temperature, the amount of epoxypropane and sodium sulfate on substitution degree of hydroxypropyl amophophallus starch was discussed. It was shown that substitution degree of hydroxypropyl amophophallus starch was influenced by reaction time, amount of sodium hydroxide, reaction temperature, amount of epoxypropane and inhibitor. The method of alcohol as solvent was feasible for the synthesis of hydroxypropyl amophophallus starch. The spectrophotometric method was used for measuring substitution degree of hydroxypropyl amophophallus starch.