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| Construction of fingerprint of rice bran oil and quantitative detection method for adulterated rice bran oil |
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| KeyWord:rice bran oil fingerprint linear model characteristic fatty acid adulteration |
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| Abstract: |
| The fingerprint of rice bran oil was constructed by constant temperature capillary gas chromatography so as to improve the quantitative detection system of adulterated rice bran oil. The linear model of the adulteration amount of low-cost oil in rice bran oil and characteristic fatty acid content was built by simulate adulteration of rice bran oil. The results showed that the optimal quantitative detection model of rice bran oil adulterated with palm oil was YC16∶0= 16.719X+ 18.722（R2= 0.993 7）;the optimal quantitative detection model of rice bran oil adulterated with rapeseed oil was YC22∶1=0.158 2X+0.350 7（R2= 0.991 0）, suitable for the adulteration amount more than 2%; the optimal quantitative detection model of rice bran oil adulterated with cottonseed oil was YC14∶0= 0.004X+0.316 8（R2=0.981 3）,suitable for the adulteration amount over 17%; the optimal quantitative detection model of rice bran oil adulterated with soybean oil was YC18∶3=0.090 6X+2.456 4(R2= 0.992 5) , suitable for the adulteration amount above 24%. |
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