Elangovan, Thanussha (2023) Exploring Deep Eutectic Solvents As Potential Solvent For The Extraction Of Food Additive Allura Red In Food Technology Application. Masters thesis, Universiti Sains Malaysia.
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Abstract
In recent years, synthetic food dyes have gained significant popularity as additives, replacing natural dyes, with azo dyes comprising approximately 65% of the commercial dye market. However, concerns regarding the· toxic effects of azo dyes used in food colouring have prompted the development of advanced analytical methods to detect them in various food matrices. These methods typically involve intricate pre-concentration processes, time-consuming steps, and the use of expensive instruments, emphasizing the need for highly sensitive and selective approaches. Hence, this study aims to explore the application of deep eutectic solvent (DES) as potential solvent for the extraction of Allura Red AC (ARAC). Firstly, the synthesized magnetic nanoparticles functionalised with deep eutectic solvents (silicone surfactant:dodecanoic acid) (SS:DoAc@Fe304) adsorbent was successfully characterized using attenuated total reflectance-fourier transform infrared spectroscopy (ATR-FTIR) for the identification of functional bonds. This adsorbent was subsequently applied in magnetic solid phase extraction (MSPE) technique for the extraction of ARAC in soft drink samples. In contrast to pure Fe304 particles, the target ARAC can be easily adsorbed onto the SS:DoAc@Fe304 surface due to the formation of strong hydrophobic interaction between the ARAC and the adsorbents thus amplifying the extraction efficiency. Under the optimized conditions, R2 value obtained was 0.999 while the limit of detection (LOD) and limit of quantification (LOQ) was found to be 0.1 mgL·1 and 0.4 mgL·I, respectively. The relative recovery values obtained were in the range of 80 to 111% for the studied ARAC. In a nutshell, it can be implied that the newly proposed SS:DoAc@Fe304 based MSPE technique for the extraction of ARAC in drink samples is environmentally friendly, simple, affordable, and effective.
| Item Type: | Thesis (Masters) |
|---|---|
| Subjects: | R Medicine > R Medicine (General) |
| Divisions: | Institut Perubatan & Pergigian Termaju (Advanced Medical & Dental Institute (AMDI)) > Thesis |
| Depositing User: | MUHAMAD AMIN BIN AZMI |
| Date Deposited: | 10 Jun 2026 01:10 |
| Last Modified: | 10 Jun 2026 01:10 |
| URI: | http://eprints.usm.my/id/eprint/64344 |
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