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Discriminating the Geographical Origin of Sesame Seeds by Low Field NMR  

Rho, Jeong-Hae (Korea Food Research Institute)
Lee, Sun-Min (Korea Food Research Institute)
Publication Information
Korean Journal of Food Science and Technology / v.34, no.6, 2002 , pp. 1062-1066 More about this Journal
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.
Keywords
low-field NMR; sesame; origin; canonical discriminant analysis;
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