文献类型：期刊文献

英文题名：Enhanced extraction of astaxanthin using aqueous biphasic systems composed of ionic liquids and potassium phosphate

作者：Gao, Jing[1];Fang, Chunli[1];Lin, Yongzi[1];Nie, Fanghong[1];Ji, Hongwu[1];Liu, Shucheng[1]

机构：[1]Guangdong Ocean Univ, Coll Food Sci & Technol, Guangdong Prov Key Lab Aquat Prod Proc & Safety, Key Lab Adv Proc Aquat Prod,Guangdong Higher Educ, Zhanjiang 524088, Peoples R China

年份：2020

卷号：309

外文期刊名：FOOD CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:000501322500056)、、EI(收录号：20194407604460)、Scopus(收录号：2-s2.0-85074087587)、WOS

基金：This work was supported by National Natural Science Foundation of China (21706040), Natural Science Foundation of Guangdong Province (2019A1515010640), Guangdong higher education institution innovative team of high value processing and utilization of aquatic products (GDOU2016030503), and Colleges Innovation Project of Guangdong Province (230419064).

语种：英文

外文关键词：Aqueous biphasic system; Ionic liquid; Astaxanthin; Extraction; Shrimp waste

外文摘要：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 potassium phosphate (K3PO4) was investigated. The influence of phosphonium- and ammonium-based ILs and temperature on the phase behavior and astaxanthin extraction was evaluated. The hydrogenbond basicity of each IL studied shows a negative linear correlation with tie-line lengths of ABS and a positive linear correlation with extraction efficiency (EEAst). In general, lower temperature are favourable for astaxanthin extraction. Tributyloctylphosphonium bromide ([P-4448]Br) resulted in the strongest ABS formation ability and bonding interactions between the anion and astaxanthin. Compared with organic solvents, [P-4448]Br+ K3PO4 ABS achieved higher EEAst 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.