Đăng nhập
 
Tìm kiếm nâng cao
 
Tên bài báo
Tác giả
Năm xuất bản
Tóm tắt
Lĩnh vực
Phân loại
Số tạp chí
 

Bản tin định kỳ
Báo cáo thường niên
Tạp chí khoa học ĐHCT
Tạp chí tiếng anh ĐHCT
Tạp chí trong nước
Tạp chí quốc tế
Kỷ yếu HN trong nước
Kỷ yếu HN quốc tế
Book chapter
Bài báo - Tạp chí
16 (2021) Trang:
Tạp chí: Asia-Pacific Journal of Chemical Engineering

Different schemes in the production of structured triglycerides based on solvent-free esterification of oleic acid and palmitic acid with glycerol were evaluated in terms of reactant conversion, product composition, and yield. Two-step processes, with or without glycerol dosing, were compared with onestep versions carried out at temperature conditions within 40C–60C to a final oleic acid/palmitic acid/glycerol ratio of 2:1:1, the stoichiometric ratio in 1,3-dioleoyl-2-palmitoyl glycerol (OPO). Substantial amounts of C52 triglycerides, including OPO, were produced in all schemes at 34.98–39.55 wt.% of the total triglycerides and triglyceride yields of 50.10–56.56 wt.% based on the raw materials. The two-step process with glycerol dosing at 60C showed the highest palmitic acid incorporation at the sn-2 position of 46.46%, but the same process carried out with a step increase in temperature from 40C to 60C gave the highest OPO yield at 19.30 wt.%. These results demonstrate the possibility of manipulating regioselectivity and triglyceride specificity by varying reactant feeding schemes without the use of solvents and sn-1,3-specific lipases common in conventional acidolysis-based processes.

Các bài báo khác
 


Vietnamese | English






 
 
Vui lòng chờ...