College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Zhanjiang 524088, China.
College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Zhanjiang 524088, China.
Food Chem. 2020 Mar 30;309:125672. doi: 10.1016/j.foodchem.2019.125672. Epub 2019 Oct 19.
Shrimp waste containing a substantial amount of valuable nutrients presents a challenge for food industry. In this work, extraction of astaxanthin from shrimp waste via aqueous biphasic systems (ABS) composed of ionic liquids (ILs) and potassiumphosphate (KPO) was investigated. The influence of phosphonium- and ammonium-based ILs and temperature on the phase behavior and astaxanthin extraction was evaluated. The hydrogen-bond basicity of each IL studied shows a negative linear correlation with tie-line lengths of ABS and a positive linear correlation with extraction efficiency (EE). In general, lower temperature are favourable for astaxanthin extraction. Tributyloctylphosphonium bromide ([P]Br) resulted in the strongest ABS formation ability and bonding interactions between the anion and astaxanthin. Compared with organic solvents, [P]Br + KPO ABS achieved higher EE of 93.08% at 308 K. The chemical properties provide the possibility of prescreening appropriate ILs for ABS formation and predicting the partition of a target molecule.
虾废料中含有大量有价值的营养物质，这对食品工业来说是一个挑战。在这项工作中，通过由离子液体（ILs）和磷酸钾（KPO）组成的双水相体系（ABS）从虾废料中提取虾青素。考察了磷翁和铵基 ILs 以及温度对相行为和虾青素提取的影响。研究的每个 IL 的氢键碱性与 ABS 的系带长度呈负线性相关，与萃取效率（EE）呈正线性相关。一般来说，较低的温度有利于虾青素的提取。三正丁基辛基溴化膦（[P]Br）导致 ABS 形成能力最强，阴离子和虾青素之间的键合相互作用最强。与有机溶剂相比，[P]Br+KPO ABS 在 308 K 时达到了 93.08%的更高 EE。化学性质提供了为 ABS 形成筛选合适 IL 的可能性，并预测了目标分子的分配。
