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Characterization of L-cysteine sources using ATR-FTIR and Raman spectroscopy

Z., Mohamad Zharif and Tukiran, Nur Azira and Abdullah Sani, Muhamad Shirwan (2021) Characterization of L-cysteine sources using ATR-FTIR and Raman spectroscopy. Halalsphere, 1 (1). pp. 83-95. E-ISSN 2773-6040

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L-cysteine is a food additive that is used in bakery ingredient. It is used as stabilizer to soften the texture of bakery dough. However, the primary sources of L-cysteine could be controversial as it might derive from animal and human parts. This study aimed to differentiate the L-cysteine sources by using Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR) and Raman spectroscopy. Raw materials of pig bristles, human hair, cow horn, duck feather and chicken feather were analysed. The result found that the ATR-FTIR is preferable rather than Raman spectroscopy in differentiating the primary sources of L-cysteine. Data pre-treatment was carried out to provide a more suitable for analysis and easier interpretation. Accordingly, principal component analysis (PCA) transformed the transmittance of ATR-FTIR into a number of principal components (PCs).Five distinct groups were successfully differentiated in PCA. The proposed method offers as fast and environmentally friendly approach to distinguish the primary source of L-cysteine sources. Hence, this method would beneficial to be used for origin determination of L-cysteine food additives.

Item Type: Article (Journal)
Additional Information: 7613/89331
Uncontrolled Keywords: L-cysteine; Food additives; Raman spectroscopy; Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR); Principal Component Analysis (PCA)
Subjects: T Technology > TP Chemical technology
T Technology > TP Chemical technology > TP368 Food processing and manufacture
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): International Institute for Halal Research and Training (INHART)
Depositing User: Muhamad Shirwan Abdullah Sani
Date Deposited: 14 Apr 2021 09:39
Last Modified: 14 Apr 2021 09:39
URI: http://irep.iium.edu.my/id/eprint/89331

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