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Chemical reactions involved in the catalytic hydrogenation of oils. II. Identification of some volatile by‐products
Author(s) -
Silveira A.,
Masuda Y.,
Chang S. S.
Publication year - 1965
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/bf02545034
Subject(s) - chemistry , hexanal , decanal , gas chromatography , odor , chromatography , catalysis , heptadecane , organic chemistry , octanal , octane , decane , nonanal
Abstract Gas chromatography of the volatile by‐products produced during the catalytic hydrogenation of an autoxidized soybean oil with a peroxide number of 11.2 meq/kg yielded approx 41 peaks. Twenty‐one of the gas chromatographic fractions were collected and rechromatographed, and their chemical identity studied with micro‐iR and mass spectrophotometry. These volatile by‐products, according to peak area of gas chromatogram, showed a predominance of hydrocarbons and alcohols. The fractions which have been identified are n ‐octane, n ‐nonane, n ‐decane, n ‐heptadecane, n ‐hexanol, n ‐heptanol, n ‐decanol, n ‐hexanal, n ‐decanal and 3‐nonanone. Among the gas chromatographic fractions collected, n ‐decanol has an odor most reminiscent of that of catalytic hydrogenation.