Chromatographic separation ofcis andtrans fatty esters by argentation with a macroreticular exchange resin

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Abstract
Methyl oleate and methyl elaidate, as well as other monoenecis andtrans isomers of fatty esters, can be separated quickly and conveniently by a preparative chromatographic procedure in which a silver‐saturated ion‐exchange resin is used. Separations are based on differences in stabilites of the silver‐olefin complexes. Recoveries of better than 95% were made, and puretrans andcis monoene fractions were collected. This method can be used to separate saturates fromcis andtrans monoenes. Thecis,trans,cis,cis, andtrans,trans‐9‐12‐octadecadienoates were separated. Whilecis,trans andtrans,trans dienes were cluted separately, thecis,cis diene isomer remained on the column.

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