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BASE CATALYZED TRANSESTERIFICATION OF VEGETABLE OILS 1
Author(s) -
AKOH CASIMIR C.,
SWANSON BARRY G.
Publication year - 1988
Publication title -
journal of food processing and preservation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.511
H-Index - 48
eISSN - 1745-4549
pISSN - 0145-8892
DOI - 10.1111/j.1745-4549.1988.tb00073.x
Subject(s) - transesterification , chemistry , saponification , sodium hydroxide , organic chemistry , catalysis , diethyl ether , anhydrous , base (topology) , reagent , potassium hydroxide , sodium methoxide , mathematical analysis , mathematics
Anhydrous methanolic sodium hydroxide catalyzed transesterification of vegetable oils yielded pure methyl esters within one minute at ambient temperature under nitrogen. Neither benzene nor phenolphthalein was required to maintain adequate stability of methanolic sodium hydroxide transesterification reagent. Additional esterification with methanolic HCl to convert free fatty acids to methyl esters was not required. Neutralization of excess base with 2.0 M HCl stopped saponification. Transesterification catalyzed by 1.0 M methanolic NaOH was reproducible and quantitative. Pentane and diethyl ether were excellent solvents for methanolic sodium hydroxide catalysis.