Journal of Oleo Science
Online ISSN : 1347-3352
Print ISSN : 1345-8957
ISSN-L : 1345-8957
General Subjects
Evaluating the Content and Distribution of Trans Fatty Acid Isomers in Foods Consumed in Japan
Naohiro GotohKazuaki YoshinagaSatoshi KagionoYukiko KatohYota MizunoFumiaki BeppuToshiharu NagaiHoyo MizobeAkihiko YoshidaKoji Nagao
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2019 Volume 68 Issue 2 Pages 193-202


Trans fatty acids (TFA) are considered risk factors for cardiovascular disease. However, detailed information on total content of TFA and TFA isomers and distribution of trans-octadecenoic acid positional isomers in foods consumed in Japan is not available till date. In this study, 250 foods, 169 processed foods and 81 foods derived from ruminant meat or milk, were analyzed. According to the results, most foods contained less than 1.0 g TFA / 100 g food. However, almost all foods containing butter had more than 1.0 g TFA / 100 g food. TFA isomers in foods were classified into two categories, monoene-rich type and polyenerich type. We hypothesized that these differences were attributed to diverse TFA formation mechanisms. Furthermore, we observed that trans-10-18:1 was also the dominant trans-18:1 positional isomer in foods consumed in Japan. These results are valuable for future analysis of the role of TFA in epidemiological studies in Japan.

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© 2019 by Japan Oil Chemists' Society
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