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KMID : 0380620110430010105
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Korean Journal of Food Science and Technology
2011 Volume.43 No. 1 p.105 ~ p.109
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Authentication of Rapeseed Oil Using an Electronic Nose Based on Mass Spectrometry
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Hong Eun-Jeung
Son Hee-Jin
Choi Jin-Young
Noh Bong-Soo
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Abstract
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To determine mixing ratios for mixtures of rapeseed oil and other oils, an electronic nose (E-nose) based on a mass spectrometer system was used. Rapeseed oil was blended with soy bean oil or corn oil at ratios of 100:0, 97:3, 94:6, 91:9, 88:12, 85:15, and 80:20, respectively. The intensities of each fragment from the mixed rapeseed oil by E-nose based on MS were completely different from those of the soy bean oil and corn oil. The obtained data were used for discriminant function analysis (DFA). DFA plots indicated a significant separation of pure rapeseed oil and soy bean oil or corn oil and their mixtures. The added concentration of soy bean oil or corn oil to rapeseed oil was highly correlated to the first discriminant function score (DF1). When soy bean oil was added to rapeseed oil, it was possible to predict the following equation: DF1= ?0.170*conc. of soy bean oil+0.431 (r2=0.989). For corn oil the equation was: DF1= ?0.1*conc. of corn oil+0.4 (r2=0.844). The use of an E-nose based on a MS system is as an efficient method for the authentication of pure rapeseed oil.
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KEYWORD
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electronic nose, mass spectrometer, rapeseed oil, authentication
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