naa a22 4500 510819133 CHVBK 20180411083522.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11814-013-0040-9 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0040-9 Phase behavior of aqueous two-phase systems of cationic and anionic surfactants and their application to theanine extraction [Elektronische Daten] [Junwei Zhang, Yan Wang, Qijun Peng] Phase behavior of aqueous two-phase systems (ATPS) containing cationic (SDS) and anionic (CTAB) surfactants and its application to theanine extraction was studied. Results indicated the ATPS could form under the certain SDS/CTAB molar ratio; there was a reasonable consistency between the conductivity and the formation region of ATPS, and the viscosity was higher in the formation region of ATPS. Additionally, the phase ratio increased with increase of CATB concentration, and the interfacial film between the top phase and the bottom phase was resilient. Moreover, the theanine extraction with ATPS was realized in the waste liquid of tea polyphenol production (WLTPP), and the partition coefficient of theanine decreased with increase of WLTPP concentration, whereas the extraction rate of theanine increased. The partition coefficient decreased with increasing SDS/CTAB molar ratio, and the extraction rate of theanine increased with increase of SDS/CTAB molar ratio. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Phase Behavior nationallicence Aqueous Two-phase Systems nationallicence Surfactant nationallicence Extraction nationallicence Theanine nationallicence Zhang Junwei The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, P. R. China aut Wang Yan The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, P. R. China aut Peng Qijun The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, P. R. China aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/6(2013-06-01), 1284-1288 0256-1115 30:6<1284 2013 30 11814 https://doi.org/10.1007/s11814-013-0040-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0040-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Junwei The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, P. R. China aut NATIONALLICENCE 700 1- Wang Yan The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, P. R. China aut NATIONALLICENCE 700 1- Peng Qijun The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, P. R. China aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/6(2013-06-01), 1284-1288 0256-1115 30:6<1284 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer