Abstract
As the trans isomer of linoleate has no effect as essential fatty acids, the content of this isomer in margarines was determined. For this determination, 8 kinds of American margarines (4 of softtype and 4 of hard type) and 11 kinds of Japanese margarines (6 of soft and 5 of hard) wereemployed.
As the results, it was found that the difference of unsaturated fatty acid content between soft andhard types was small for American samples, while this difference of Japanese samples was large and, contrary to this, the difference of trans acid content between these two types was large for Americansamples and not so for Japanese samples.
