Discrimination of Adulterated Sesame Oil Using Mid-infrared Spectroscopy and Chemometrics

文献类型： 外文期刊

第一作者： Zhao, Xiande

作者： Zhao, Xiande;Dong, Daming;Zheng, Wengang;Jiao, Leizi;Lang, Yun

作者机构：

关键词： Mid-infrared spectroscopy;Sesame oil;Adulteration;Discrimination;Chemometrics

期刊名称：FOOD ANALYTICAL METHODS （ 影响因子：3.366； 五年影响因子：3.07 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： There is usually some fake sesame oil in Chinese market that mixes sesame oil flavor into other kinds of edible oils to cheat customers, but it is hard to discriminate. A new analytical method based on directly mid-infrared spectroscopy combined with chemometrics was studied for identifying adulterated sesame oil in this study. We analyzed the spectral characteristics of sesame oil, three kinds of edible oils, and sesame oil flavor and found that there are obvious spectral differences between them. Through principal component analysis (PCA) method, the pure sesame oil and other edible oils that mixed with sesame oil flavor can be obviously classified. To further demonstrate the ability of infrared spectroscopy to discriminate fake sesame oil, we established independent modeling of class analogy (SIMCA) and partial least square discriminate analysis (PLS-DA) model and found there are effective for discrimination. We also studied the spectral changes with different adulteration rates of sesame oil flavor and found that the absorption peak at 1055-1025 cm(-1) was weakened and shifted with the increase in the concentration of sesame oil flavor.

分类号： TS2

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