Determination of the Adulteration of Sesame Oils Sold in Markets by Gas Chromatography

시중 참기름에 혼입된 이종기름에 관하여

  • Published : 1992.03.01

Abstract

This study primarily attempted to establish the method for the determination of the adulteration in the sesame oil. First of all, extensive experiment was conducted to determine the composition of genuine sesame oil prepared from Korean, Japanese, Taiwanese and Chinese sesame seed. Sesamin and sterols in unsaponfiable matter were examined along with fatty acid in saponifiable fraction by Gc. There was no significant difference in the composition of sesamin and sterols in sesame oils prepared from Korean and foreign seeds. The ranges of sesamin and ${\beta}-sitosterol$ against campesterol were 3.32~5.46 and 2.39~2.99 respectively in all samples. Similiar composition of fatty acids was showed in all pure sesame oils, in which the contents were 8.37~lO.09% palmitic acid, 4.61~5.50% stearic acid, 35.24~39.97% oleic acid, 43.04~49.76% linoleic acid, O.21~O.31% linolenic acid and 0.40~O.69% arachidic acid. Among the commercial sesame oils sold in Markets, three sesame oils from Japan revealed low sesamin, high linoleic acid and linolenic acid, and low oleic acid and stearic acid, suggesting the adulteration with soybean oil.

근래 외국에서 참기름이 들어오고 있어 산지에 따른 성분조성을 밝히고자 sterolfb와 지방산류의 함량을 측정하였다. 일본, 중국, 대만 등에서 수입되고 있는 참깨에서 얻은 참기름과 우리 나라 산의 참기름의 성분조성을 비교할 때 유사하여, sterol 류중 campesterol은 1.00~1.29 mg/g이었으며, ${\beta}-sitosterol$의 camp.에 대한 비율은 2.39~2.99%이고, sesamin의 camp.에 대한 비율은 3032~5.46이었으며, 지방산은 palmitic acid 8.37~10.09%, stearic acid 4.61~5.50%, oleic acid 35.24~39.97%, linoleic acid 43.04~49.76%, linolenic acid 0.21~0.31% 그리고 arachidic acid 0.40~0.69% 이었다. 그러나 일부 일본제 상품에서 sesamin이 아주 적게 함유되어 있고 linoleic acid, linolenic acid가 많이 함유되어 있는 반면 oleic acid와 stearic acid가 적게 함유되어 있으므로 콩기름을 함유한 것으로 추정되는 상품이 나타나고 있으며, 이들이 동일 상품에서 나타나고 있는 것으로 보아 불법으로 제조된 상품으로 사료되었다.

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