期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 240, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2023.124265
关键词
Lignin; Hydrophobic deep eutectic solvent; Liquid-liquid microextraction
In this study, lignin-based hydrophobic deep eutectic solvents (LHDES) were synthesized via a one-step strategy and used as extraction solvent for the determination of Sudan red dyes. The practicality of LHDES was demonstrated by applying it to the detection of Sudan Red I in real water samples and foodstuffs, with an extraction rate of up to 98.62%. This method provides a simple and effective approach for the determination of Sudan Red in food.
As a synthetic pigment, Sudan red is commonly used as a food additive and is harmful to the human kidney and can even cause cancer. In this work, we developed a one-step strategy to synthesize lignin-based hydrophobic deep eutectic solvents (LHDES), which were fabricated via methyltrioctylammonium chloride (TAC) as hydrogen bond acceptor and alkali lignin as hydrogen bond donor. LHDES with different mass ratios were synthesized and the mechanism of formation was determined by different characterization techniques. The synthetic LHDES was used as the extraction solvent to establish a vortex-assisted dispersion-liquid microextraction method for the determination of Sudan red dyes. The practicality of LHDES was evaluated by applying it to the detection of Sudan Red I in real water samples (seawater, river water) and duck blood in foodstuffs, and the obtained extraction rate reached up to 98.62 %. The method is simple and effective for the determination of Sudan Red in food.
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