کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6451957 | 1416984 | 2017 | 9 صفحه PDF | دانلود رایگان |
- Lipase-catalyzed transesterification of sucrose and vinyl caprate was carried-out.
- Vinyl caprate was dispersed in a concentrated solution of sucrose and lipase in DMSO.
- Lipase pretreatment greatly improved catalytic activity and reaction productivity.
- 2-O-acylated sucrose monoester was obtained as the major isomer in the final product.
Sucrose monocaprate was synthesized by carrying out a lipase-catalyzed transesterification in a non-aqueous biphasic medium. Vinyl caprate was mechanically dispersed into a solution of sucrose in DMSO. The use of DMSO allowed increasing sucrose concentration up to 0.7 M (in DMSO). The denaturing effect of DMSO on lipase was avoided by pretreatment of lipase by pH adjustment in the presence of crown ether. This pretreatment maintained a significant catalytic activity which led to 0.2 M sucrose monoester within 1 h at 50 °C, which represented higher productivity than already reported. Detailed structural characterization revealed that only monoester was recovered and the 2-O-acylated sucrose monocaprate was the major isomer in the final product.
Journal: Journal of Biotechnology - Volume 259, 10 October 2017, Pages 182-190