Forensic Discrimination of Unsaponifiables of Fats and Oils Using Gas Chromatography/Mass Spectrometry

YAMAGUCHI Kazutaka, KURATA Shoji

doi:10.2116/bunsekikagaku.54.1091

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不けん化物のガスクロマトグラフィー／質量分析法による油脂の法化学的な異同識別
フケンカブツノガスクロマトグラフィーシツリョウブンセキホウニヨルユシノホウカガクテキナイドウシキベツ

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Description

Fifty-one types of fats and oils were analyzed using gas chromatography/mass spectrometry (GC/MS) of unsaponifiables for developing their forensic discrimination in this study. This method could distinguish vegetable oils and animal fats by the discrimination of sterols. The analytical results showed that sesamin and sesamolin, capsaicine and dyhidrocapsaicine, and spinasterol were characteristic unsaponified compounds useful for the identification of sesame oil, mustard seed oil, and camellia oil, respectively. All 32 types of vegetable oils could be discriminated by comparing of unsaponifiables. Higher alcohols from saponified wax were also useful for the discrimination of fats and oils; 19 types of animal fats were classified into 13 groups only by the analysis of unsaponifiables, because the types of unsaponifiables of animal fats were much fewer than those of vegetable oils. Accordingly, the GC/MS analysis of unsaponifiables in this study was very useful for the discrimination of fats and oils.<br>

Journal

BUNSEKI KAGAKU

BUNSEKI KAGAKU 54 (11), 1091-1100, 2005

The Japan Society for Analytical Chemistry

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