Comparison of Near-Infrared and Mid-Infrared spectroscopy for the identification and quantification of argan oil adulteration through PCA, PLS-DA and PLS
Meryeme El Maouardi , Kris De Braekeleer , Abdelaziz Bouklouze , Yvan Vander Heyden
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引用次数: 0
Abstract
Argan oil, a rare and luxury oil, is often adulterated with cheaper vegetable oils to make profits. Therefore, in this study, the potential of Mid-Infrared (MIR) and Near-Infrared (NIR) spectroscopy, along with chemometrics, for the rapid identification and quantification of argan oil adulteration, was investigated. First, the authentication of pure and adulterated samples was visually explored by Principal Component Analysis. MIR and NIR spectra allowed an excellent distinction between pure oil samples. Next, Partial Least Squares - Discriminant Analysis (PLS-DA) modelling was applied to discriminate between pure and adulterated argan oils. PLS-DA classification figures of merit, in terms of sensitivity, specificity, and accuracy, were very good for both NIR and MIR datasets. Finally, Partial Least Squares regression was used to model and predict the level of adulterant. The developed models showed a good performance, with RMSE values below 1.7% and coefficients of determination higher than 98% for both techniques.
期刊介绍:
Food Control is an international journal that provides essential information for those involved in food safety and process control.
Food Control covers the below areas that relate to food process control or to food safety of human foods:
• Microbial food safety and antimicrobial systems
• Mycotoxins
• Hazard analysis, HACCP and food safety objectives
• Risk assessment, including microbial and chemical hazards
• Quality assurance
• Good manufacturing practices
• Food process systems design and control
• Food Packaging technology and materials in contact with foods
• Rapid methods of analysis and detection, including sensor technology
• Codes of practice, legislation and international harmonization
• Consumer issues
• Education, training and research needs.
The scope of Food Control is comprehensive and includes original research papers, authoritative reviews, short communications, comment articles that report on new developments in food control, and position papers.