CAJ | 학술논문

以发酵乳酸和天然薄荷醇为主要原料用直接酯化法合成了乳酸薄荷酯,讨论了合成过程中带水剂的选择、投料配比、反应温度和反应时间对反应转化率的影响.实验结果表明,以四氯化碳为带水剂,m(乳酸):m(薄荷醇)=1.2:1,110℃反应3 h,薄荷醇对乳酸薄荷酯反应转化率可达75.5%.产品经减压蒸馏、重结晶处理后质量分数达99.6%.将其作为清凉剂应用于沐浴露、护肤乳液、爽身粉等个人护理化学品的配方中,并与传统清凉剂薄荷脑进行了性能对比研究.结果表明此产品应用于个人护理用品中,在人皮肤上的清凉作用和感觉方面与薄荷脑相比较更为温和而持久.
이발효유산화천연박하순위주요원료용직접지화법합성료유산박하지,토론료합성과정중대수제적선택、투료배비、반응온도화반응시간대반응전화솔적영향.실험결과표명,이사록화탄위대수제,m(유산):m(박하순)=1.2:1,110℃반응3 h,박하순대유산박하지반응전화솔가체75.5%.산품경감압증류、중결정처리후질량분수체99.6%.장기작위청량제응용우목욕로、호부유액、상신분등개인호이화학품적배방중,병여전통청량제박하뇌진행료성능대비연구.결과표명차산품응용우개인호리용품중,재인피부상적청량작용화감각방면여박하뇌상비교경위온화이지구.
With fermentation produced lactic acid and natural menthol as main raw materials, L-menthyl lactate was synthesized by direct esterification. The effects of the water stripping agent, mass ratio of lactic acid to menthol, reaction temperature and reaction time on conversion were studied. The results showed that using CCl4 as the water stripping agent,m(lactic acid): m (menthol) = 1.2:1 ,at reaction temperature of 110℃ for 3 h, the conversion of menthol to L-menthyl lactate achieves 75.5 %. The purity of the product can achieve 99.6% after vacuum distillation and recrystallization. The product was used tentatively in personal care products such as shower gel, skin care lotion, and toilet powder freshener. Comparison was made on the performance of L-menthyl lactate with that of menthol. Results showed that the L-menthyl lactate has advantages such as mild and persistent freshening action and feeling on human skin.