聚乙二醇淀粉糖苷的合成及其保湿性

以马铃薯淀粉和聚乙二醇为原料,采用转糖苷化法合成聚乙二醇淀粉糖苷,以糖苷产率为指标,通过正交实验探讨最佳合成工艺条件为:反应温度118℃,反应时间4.5 h,m(淀粉)∶m(对甲苯磺酸)∶m(乙二醇)∶m(聚乙二醇800)=1∶0.025∶4∶2,糖苷产率达154.58%;对产品进行FTIR、GC-MS结构表征和保湿性能分析。结果表明,该产品属糖苷类物质且具有良好的保湿性能。

Synthesis and Moisture Retention of Polyethylene Glycol Glycoside from Starch

In this paper,potato starch and polyethylene glycol were used as the raw materials to synthesize polyethylene glycol glycoside by adopting the method of trans-glycosylation.With the yield of the target product as the research index,the optimum conditions of synthesizing polyethylene glycol glycoside were investigated through orthogonal experiments and ascertained as follows:reaction temperature 118 ℃,reaction time 4.5 h,m(starch)∶m(PTSA)∶m(ethylene glycol)∶m(PEG 800)=1∶0.025∶4∶2.Under such optimum conditions,the yield of the target product was 154.58%.The product was characterized by means of FTIR,GC-MS and its moisture retention was analyzed.The results show that the product belongs to a kind of glycosidic substances with excellent moisture retention.