Synthesis of geranyl acetate by transesterification of geraniol with ethyl acetate over Candida antarctica lipase as catalyst in solvent‐free system

2019 ◽  
Vol 34 (4) ◽  
pp. 288-293 ◽  
Author(s):  
Kalpesh V. Bhavsar ◽  
Ganapati D. Yadav
Keyword(s):  
Ethyl Acetate ◽  
Candida Antarctica ◽  
Solvent Free ◽  
Geranyl Acetate ◽  
Candida Antarctica Lipase ◽  
Free System ◽  
Solvent Free System

scholarly journals Cocoa olein glycerolysis with lipase Candida antarctica in a solvent free system

2020 ◽  
Vol 71 (4) ◽  
pp. 383
Author(s):  
L. S. Zamorano ◽  
P. Calero Magaña ◽  
E. García Cisneros ◽  
A. V. Martínez ◽  
L. F. Martín
Keyword(s):  
Reaction Times ◽  
Candida Antarctica ◽  
Solvent Free ◽  
Raw Material ◽  
Molar Ratio ◽  
Free Acidity ◽  
Glycerol Content ◽  
Free System ◽  
Free Process ◽  
Solvent Free System

In this paper we present the valorization of cocoa olein obtained from the acid fat-splitting of soapstocks. The aim is to develop a solvent free process (enzymatically catalyzed) to maximize the production of a final product with high content of monoglycerides (MAG) and diglycerides (DAG). The effect of the enzyme dose, glycerol content, reaction times as well as the modification of the raw material and pressure were studied. The yield of the reaction increased up to 90-95% when using a vacuum of 2-3 mbar at 65 °C, enough to evaporate the water which is generated as a by-product, an enzyme dose of 1% and molar ratio oil:glycerol of 1:2. The highest yield in terms of MAG and DAG production was obtained by starting from a raw material which was rich in free acidity (FFA), rendering oil with 33.4 and 44.2% MAG and DAG, respectively. Short reaction times (6-8 h) were observed compared to previously reported results (24 h).

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