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Rapid determination of aflatoxin B-1 concentration in soybean oil using terahertz spectroscopy with chemometric methods

文献类型： 外文期刊

作者： Liu, Wei 1 ; Zhao, Pengguang 1 ; Wu, Chaosheng 1 ; Liu, Changhong 1 ; Yang, Jianbo 3 ; Zheng, Lei 1 ;

作者机构： 1.Hefei Univ Technol, Sch Food & Biol Engn, Hefei 230009, Anhui, Peoples R China

2.Hefei Univ, Intelligent Control & Compute Vis Lab, Hefei 230601, Anhui, Peoples R China

3.Anhui Acad Agr Sci, Rice Res Inst, Hefei 230031, Anhui, Peoples R China

4.Anhui Modern Agr Ind Technol Syst, Res Lab Agr Environm & Food Safety, Hefei 230009, Anhui, Peoples R China

关键词： Terahertz spectroscopy; Rapid determination; Aflatoxin B-1; Soybean oil; Chemometrics

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2019 年 293 卷

页码：

收录情况： SCI

摘要： Soybean oil is often contaminated by aflatoxin B-1 (AFB(1)) which is regarded as a class I carcinogen. The feasibility of rapid determination of AFB(1) in soybean oil with terahertz spectroscopy was examined. t-SNE, as the pretreatment method was used to get the best features and combined with different chemometrics including least squares-support vector machines (LS-SVM), back propagation neural network (BPNN), random forest (RF) and partial least squares (PLS) to find the best determination model. The excellent prediction results could be obtained using BPNN combined with t-SNE with correlation the coefficient of prediction (R-p) was 0.9948 and the root-mean-square error of prediction (RMSEP) was 0.7124 mu g/kg. Besides, THz spectroscopy was proved to be feasible to detect AFB(1) at 1 mu g/kg in soybean oil (over 90% accuracy). It was concluded that THz spectroscopy together with chemometrics would be a promising technique for rapid determination of the AFB(1) concentration in soybean oil.

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