Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
Int J Biol Macromol. 2023 Jun 15;240:124265. doi: 10.1016/j.ijbiomac.2023.124265. Epub 2023 Mar 30.
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.
苏丹红作为一种合成色素，常被用作食品添加剂，对人类肾脏有害，甚至可能致癌。在这项工作中，我们开发了一种一步法策略来合成基于木质素的疏水性深共熔溶剂（LHDES），它是通过氯化三辛基甲基铵（TAC）作为氢键受体和碱木质素作为氢键供体制备的。合成了不同质量比的 LHDES，并通过不同的表征技术确定了其形成机制。将合成的 LHDES 用作萃取溶剂，建立了一种涡旋辅助分散液微萃取方法，用于测定苏丹红染料。通过将其应用于实际水样（海水、河水）和食品中鸭血中苏丹红 I 的检测，评估了 LHDES 的实用性，获得的萃取率高达 98.62%。该方法简单有效，可用于食品中苏丹红的测定。
