Determination and Study of Naturally Occurring Vanillin in Rice
The content level of vanillin in rice product and the changes of vanillin in paddy rice processing were studied.A quantitative assay for the determination of vanillin using ultra performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS)was developed.The vanillin in 206 kinds of rice products,12 kinds of paddy rice and their processed products which were brown rice,not refined rice,and 6 kinds of paddy rice and their processed products which were brown rice,not refined rice,refined rice were qualitatively and quantitatively analyzed and determined.The changes of vanillin content during paddy rice processing were studied.The research results showed that methyl vanillin and ethyl vanillin were not detected in all of samples,and vanillin was detected in all of samples.The vanillin content of rice products conformed approximately to the normal distribution,and concentrated from 100-222 μg/kg.The changes of vanillin content in paddy rice,brown rice,not refined rice and refined rice showed a descending trend.The results suggested the possibility of naturally may occur vanillin in rice,and the source is probably rice hull.The detection of vanillin in rice was not always illegal addition.The content level of vanillin in rice and paddy rice should be continuously studied and scientifically analyzed,in order to provide scientific evidence for the market supervision department formulating reasonably the risk reference value of rice.
NETL
NSTL
万方数据
