Authentication analysis of animal fats adulteration in nail polish simulation using Raman spectroscopy coupled with chemometrics

Ahmad Fadzillah, Nurrulhidayah and Elgharbawy, Amal A.M. and Jamaludin, Mohammad Aizat and Tukiran, Nur Azira and Windarsih, Anjar and Rohman, Abdul and Mohd Sukri, Siti Jamilah and Muhammad, Nurul Widad Fitri and Hamid, Anis Hamizah (2025) Authentication analysis of animal fats adulteration in nail polish simulation using Raman spectroscopy coupled with chemometrics. Vibrational Spectroscopy, 138. pp. 1-8. ISSN 0924-2031

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Abstract

Cosmetics are being used daily by many people, and their consumption is on the rise every year. These products are adulterated with cheaper alternatives to increase their profit. As more cosmetics are available in the market, the authenticity of halal cosmetics has raised much concern among Muslim consumers throughout the world. Therefore, authentication analysis of cosmetic products is urgently needed. This study was conducted to detect beef tallow (BT), chicken fat (CF), lard (LD), and mutton fat (MF) in nail polish using Raman spectrometry combined with chemometrics. Partial least square-discriminant analysis (PLS-DA) and hierarchical cluster analysis (HCA) were successfully used to differentiate animal fats into four subclasses. In addition, partial least square (PLS) and orthogonal PLS (OPLS) regression were adequate to detect and predict the levels of BT, CF, LD, and MF in nail polish with R2 > 0.990 both in calibration and validation models. The best prediction model for BT was from OPLS at the wavenumber range of 100–3200 cm− 1 with R2 > 0.990 and RMSEC as well as RMSEP lower than 2.0 %. Meanwhile PLS model demonstrated the best model to predict CF, LD, and MF was the PLS with R2 > 0.990 and RMSEC as well as RMSEP around 1–2.40 %. This study revealed the potential application of Raman spectroscopy in combination with chemometrics as an effective and efficient technique for authenticating nail polish base formulation adulterated with animal fats.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Animal fats, Cosmetic, Nail polish, Raman spectroscopy, Chemometrics
Subjects:	T Technology > TP Chemical technology T Technology > TP Chemical technology > TP372.6 Halal food industry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	International Institute for Halal Research and Training (INHART)
Depositing User:	Ts. Dr AMAL ELGHARBAWY
Date Deposited:	03 Jun 2025 11:14
Last Modified:	03 Jun 2025 11:14
URI:	http://irep.iium.edu.my/id/eprint/121297

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