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Ethanolysis of rapeseed oil: Quantitation of ethyl esters, mono‐, di‐, and triglycerides and glycerol by high‐performance size‐exclusion chromatography
Author(s) -
Fillières Romain,
BenjellounMlayah Bouchra,
Delmas Michel
Publication year - 1995
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02636083
Subject(s) - transesterification , chemistry , ethanol , rapeseed , anhydrous , glycerol , molar ratio , chromatography , size exclusion chromatography , catalysis , organic chemistry , food science , enzyme
High‐performance size‐exclusion chromatography (HPSEC) was used to evaluate the influence of different variables affecting the transesterification of rapeseed oil (RSO) with anhydrous ethanol and sodium ethoxide as catalyst. The effect of temperature, ethanol/RSO molar ratio, catalyst concentration, and time can be interpreted by observing the variations of the reaction medium composition. HPSEC has made the quantitation of ethyl esters, mono‐, di‐, and triglycerides and glycerol possible. The best results for laboratory‐scale reactions were obtained at 80°C with a 6:1 molar ratio of EtOH/RSO and 1% of NaOEt by weight of RSO.