Green preparation method for hydrophobic fatty acid ester of starch (FES)

疏水性脂肪酸淀粉酯的绿色制备方法

Abstract

本发明公开了疏水性脂肪酸淀粉酯的绿色制备方法。该方法先将烘干的淀粉原料加入到混合的离子液体1-丁基-3-甲基咪唑醋酸盐和1-丁基-3-甲基咪唑四氟硼酸盐中,在氮气保护下,恒温加热搅拌;将得到的溶液降温,加入脂肪酶、脂肪酸甲酯,脂肪酶用量为淀粉干基质量的3%~15%,脂肪酸甲酯与淀粉的摩尔比1∶1~1∶5,50~80℃反应1~5h;反应结束,待溶液冷却后加入无水乙醇进行洗涤、离心,去除上清液,得到的沉淀物在35~50℃下干燥40~48h,即获得本专利的脂肪酸淀粉酯。本产品具有良好的热塑性、疏水性和生物可降解性,在微胶囊壁材、生物降解材料、食品行业等具有广泛的应用价值。

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