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Odor evaluation of fatty methyl esters purified as urea adducts
Author(s) -
List G. R.,
Hoffmann R. L.,
Moser Helen A.,
Evans C. D.
Publication year - 1967
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/bf02908542
Subject(s) - odor , autoxidation , chemistry , urea , organic chemistry , distillation , adduct , fatty acid , crystallization , polyunsaturated fatty acid , oxidative phosphorylation , biochemistry
Volatile oxidative cleavage products which are present in distilled fatty methyl esters make them unsuitable starting‐materials for odor evaluation studies. Sensory evaluation of treated and untreated esters shows that crystallization with urea removes undersirable odor constituents which result from autoxidation, metal‐catalyzed oxidation, light exposure, and distillation. The method is simple and by clathrate formation gives, in high yields, pure fatty esters, the fatty acid composition of which appears unaltered from the original material.