Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Discriminating the Geographical Origin of Sesame Seeds by Low Field NMR

Low field NMR을 이용한 참깨의 원산지 판별

  • Published : 2002.12.01
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Abstract

Low field NMR was employed to discriminate the geographical origin of sesame seeds from Sudan, China, and Korea. Sudan sesame seeds had the lowest contents of moisture and crude fat. Chemical components of Korean and Chinese sesame seeds were similar, whereas relaxation times $(T_1-IR,\;T_1-SR)$ measeured through spin-lattice relaxation pluse techniques using 20 MHz NMR showed significant difference (p0.05). Canonical discriminant analysis could be used to identify the habitat of sesame seeds with over 90% accuracy of NMR results. Non-destructive and fast NMR techniques can be applied to classify Korean sesame seeds from those of other origins.

참깨의 원산지를 판별하기 위하여 일반성분 및 low field NMR을 이용하여 relaxation time을 측정하였다. 일반성분으로는 한국산, 중국산 및 수단산간의 유의적인 차이는 없었으나 NMR 데이터 중 CPMG를 제외한 나머지 측정항목인 $T_1-IR,\;T_1-SR,\;T_2-SE,\;SFC$는 원산지별 유의적인 차이를 보였다. 가장 유의적인 차이가 높았던 SFC, IR, SR을 이용하여 정준 판별분석을 시행한 결과 수단산은 100% 판별이 가능하였고, 한국산 및 중국산은 각각 80%, 90%의 정확성을 나타내었으며, 5가지 NMR 측정항목을 모두 사용하여 판별한 결과 한국산, 중국산, 수단산이 각각 95%, 90%, 100%의 원산지 판별이 가능하였다.

Keywords

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