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Authentication of Edible Vegetable Oil and Refined Recycled Cooking Oil Using a Micro-UV Spectrophotometer Based on Chemometrics

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Journal of the American Oil Chemists' Society

Abstract

We have developed a new method to make a clear distinction between edible oil and refined recycled cooking oil by using a micro-ultraviolet spectrophotometer and analysis of spectra full data combined with principal component analysis (PCA) and cluster discriminant analysis (CDA). This method shows an excellent capability of distinguishing edible oil from refined recycled cooking oil, which is difficult to accomplish by previous methods using physical and chemical properties. Edible oils and refined recycled cooking oils have the different positions on the resulting plot of PCA and CDA. The oil samples are respectively concentrated relatively distribution and distinct from other kinds, with a certain amount of edge intersection between samples. But the edible oil and refined recycled cooking oil samples have a clear divisional interface. By the increase in sampling and the improvement of modeling, the edge intersection or overlap of commonality between samples can be reduced. Using this method, it is possible to determine qualitatively the identity of unknown samples.

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Acknowledgments

This work was supported by Zhejiang Provincial Natural Science Foundation of China (Grant No. Y4110235) and Zhejiang Provincial Bureau of Quality and Technical Supervision (Grant No. 20110236). We are delighted to acknowledge the assistance of Dr. Zhen Li and Dr. Greg Duns in revising the English of the paper and discussions with colleagues in our research group.

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Authors and Affiliations

  1. School of Bio-Chem Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, People’s Republic of China

    Tie-bing Liu, Yang Zhou, Jin Lv, Zheng-wei Chen & Yang Shi

  2. Post-Doctoral Work Unit of Shaoxing City Supervise Institute of Quality and Technology, Shaoxing, 312071, People’s Republic of China

    Bo-bin Li

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  1. Tie-bing Liu
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  2. Yang Zhou
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  3. Jin Lv
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  4. Zheng-wei Chen
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  5. Bo-bin Li
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Correspondence to Tie-bing Liu.

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Liu, Tb., Zhou, Y., Lv, J. et al. Authentication of Edible Vegetable Oil and Refined Recycled Cooking Oil Using a Micro-UV Spectrophotometer Based on Chemometrics. J Am Oil Chem Soc 90, 1599–1606 (2013). https://doi.org/10.1007/s11746-013-2311-3

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  • DOI: https://doi.org/10.1007/s11746-013-2311-3

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