Partial separation of polyunsaturated fatty acid esters from FAMEs mixtures by adsorption on silver nitrate‐impregnated silica gel | Zendy

Ghebreyessus Kesete Y. | Zendy; Schiltz Holly | Zendy; Angelici Robert J. | Zendy

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Partial separation of polyunsaturated fatty acid esters from FAMEs mixtures by adsorption on silver nitrate‐impregnated silica gel

Author(s) -

Ghebreyessus Kesete Y.,

Schiltz Holly,

Angelici Robert J.

Publication year - 2006

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/s11746-006-1252-5

Subject(s) - adsorption , chemistry , polyunsaturated fatty acid , silver nitrate , hexane , silica gel , chromatography , linolenate , soybean oil , fatty acid , nuclear chemistry , organic chemistry , food science

Mixtures of FAMEs derived from soybean and canola oils were fractionated by contacting their hexane solutions with AgNO 3 /SiO 2 adsorbents. Methyl linolenate (18∶3) adsorbed most strongly, followed by methyl linoleate (18∶2), on the AgNO 3 /SiO 2 . Conditions of the extractions (AgNO 3 loading, amount of adsorbent, methyl soyate/hexane solution concentration, use of successive extractions, and methods of adsorbent regeneration) were varied. Under optimal conditions, the 7.0% of 18∶3 in methyl soyate could be reduced to 0.1%. The described process is a simple method for separating a FAMEs mixture into a fraction that is depleted in polyunsaturated FAMEs and one that is enriched.

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