期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 189, 期 -, 页码 37-43出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2017.06.049
关键词
Raman spectrum; Synergy interval partial least square; Olive oil; Waste cooking oil; Adulteration
类别
资金
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20124401120005]
- Key Technologies R & D Program of Guangdong Province, China [2012A032300016]
- Natural Science Foundation of Guangdong Province, China [S2011040001850]
- Guangdong College of Outstanding Youth Innovation Talent Training Project in China [LYM11026]
- Fundamental Research Funds for the Central Universities, China [21612436, 21612353]
- project of Academician Workstation of Guangdong Province, China [2014B090905001]
- Key Project of Scientific and Technological Projects of Guang Zhou, China [201604040007, 201604020168]
Olive oil adulteration with waste cooking oil was detected and quantified by combining optical Raman scattering spectroscopy and chemometrics. Spectra of 96 olive oil samples with waste cooking oil (2.5%, 5%, 10%, 20%, 30% and 50%) were collected by the portable Raman spectroscopy system. iPLS and SiPLS quantitative analysis models were established. The results revealed that spectral data after SNV processing are the best for synergy interval partial least square (SiPLS) modeling and forecast. The root mean squared error of calibration (RMSEC) is 0.0503 and the root mean squared error of validation (RMSEV) is 0.0485. The lower limit of application (LLA) of the proposed method is c[WCO] = 0.5%. According to linear regression calculation, the theoretical limit of detection (LOD) of the proposed method is about c[WCO] = 0.475%. The established model could make effective quantitative analysis on adulteration of waste cooking oil. It provides a quick accurate method for adulteration detection of waste cooking oil in olive oil. (C) 2017 Elsevier B.V. All rights reserved.
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