Mono- and di-acylglycerol synthesis in CO2-expanded acetone

Publikationstyp
Journal Article
Publikationsdatum
2011-08-05
Sprache
English
Author
Huan, Phan-Tai 
Brunner, Gerd 
Institut
Thermische Verfahrenstechnik V-8 
TORE-URI
http://hdl.handle.net/11420/13168
Enthalten in
The journal of supercritical fluids 
Volume
59
Start Page
87
End Page
91
Citation
Journal of Supercritical Fluids 59 (Nov.): 87-91 (2011)
Publisher DOI
10.1016/j.supflu.2011.07.021
Scopus ID
2-s2.0-80053570239
Publisher
Elsevier Science
Enzymatic esterification of glycerol and palmitic acid was performed in acetone expanded by CO2 at 40-60 °C and 65-85 bar. Novozyme 435, Lipozyme RM IM, Lipozyme TL IM and Lipomod 34P were screened to select a suitable enzyme for the study. The effects of additional water and molar ratio of glycerol to palmitic acid on the selectivity to mono- and di-acylglycerol were investigated. Response surface method was used to describe the dependency of pressure, temperature, and enzyme concentration on the conversion of palmitic acid. Optimum condition was finally selected at 85 bar, 50 °C and 25% of Novozyme 435 related to the amount of dissolved fatty acid. © 2011 Elsevier B.V.
Schlagworte
Acylglycerol
Esterification
Expanded liquid
Lipase
Supercritical CO 2
DDC Class
530: Physik
540: Chemie
660: Technische Chemie