Li M, Su E, You P, et al. Purification and in situ immobilization of papain with aqueous two-phase system [J]. PLoS ONE, 2010, 5 (12): e15168
[2]
Tu Shaoyong (涂绍勇), Li Lu (李路), Yang Aihua (杨爱华), et al. Study on the extraction of papain with aqueous two-phase system [J]. Science and Technology of Food Industry (食品工业科技), 2010 (9): 220-222
[3]
Wan Jing (万婧). The study of extraction process of papain in papaya[D]. Haikou: Hainan University, 2010
[4]
Xu Xiaodong (徐晓冬), Dan Yuanyuan (丹媛媛), Li Xinxin (李欣欣), et al. Aqueous biphasic system based on ionic liquid and its application in bioseparation [J]. Biotechnology Bulletin (生物技术通报), 2008 (5): 88-91
[5]
Pierce J, Suelter C H. An evaluation of the Coomassie brilliant blue G-250 dye-binding method for quantitative protein determination [J]. Analytical Biochemistry, 1977, 81 (2): 478-480
[6]
Sangeetha K, Abraham T E. Chemical modification of papain for use in alkaline medium [J]. Journal of Molecular Catalysis B: Enzymatic, 2006, 38 (3): 171-177
[7]
Nitsawang S, Hatti-Kaul R, Kanasawud P. Purification of papain from Carica papaya latex: aqueous two-phase extraction versus two-step salt precipitation [J]. Enzyme and Microbial Technology, 2006, 39 (5): 1103-1107
[8]
Su S N, Nie H L, Zhu L M, et al. Optimization of adsorption conditions of papain on dye affinity membrane using response surface methodology [J]. Bioresource Technology, 2009, 100 (8): 2336-2340
[9]
Zhang Haide (张海德), Wang Weitao (王伟涛), Jiang Xinxin (蒋欣欣). Progress on the study of mechanism and partition behavior of papain in affinity aqueous two-phase systems [J]. Journal of Food Safety and Quality (食品安全质量检测学报), 2013, 2: 4
[10]
Hatti-Kaul R. Aqueous two-phase systems [J]. Molecular Biotechnology, 2001, 19 (3): 269-277
[11]
Li Z, Liu X, Pei Y, et al. Design of environmentally friendly ionic liquid aqueous two-phase systems for the efficient and high activity extraction of proteins [J]. Green Chemistry, 2012, 14 (10): 2941-2950
[12]
Freire M G, Claudio A F M, Araujo J M M, et al. Aqueous biphasic systems: a boost brought about by using ionic liquids [J]. Chemical Society Reviews, 2012, 41 (14): 4966-4995
[13]
Gai Q, Qu F, Zhang T, et al. Integration of carboxyl modified magnetic particles and aqueous two-phase extraction for selective separation of proteins [J]. Talanta, 2011, 85 (1): 304-309
[14]
Huaxi L, Zhuo L, Jingmei Y, et al. Liquid-liquid extraction process of amino acids by a new amide-based functionalized ionic liquid [J]. Green Chemistry, 2012, 14 (6): 1721-1727
[15]
Deive F J, Rodríguez A, Rebelo L P N, et al. Extraction of Candida antarctica lipase A from aqueous solutions using imidazolium-based ionic liquids [J]. Separation and Purification Technology, 2012, 97: 205-210
[16]
Liu Xiaogeng (刘晓庚), Gao Mei (高梅), Chen Meimei (陈梅梅). Ionic liquids aqueous two-phase system and its research in proteins' extraction [J]. Journal of the Chinese Cereals and Oils Association (中国粮油学报), 2013, 28 (4): 118-123
[17]
Pei Y, Li L, Li Z, et al. Partitioning behavior of wastewater proteins in some ionic liquids-based aqueous two-phase systems [J]. Separation Science and Technology, 2012, 47 (2): 277-283
[18]
Asenjo J A, Andrews B A. Aqueous two-phase systems for protein separation: phase separation and applications [J]. Journal of Chromatography A, 2012, 1238: 1-10
[19]
Pei Y, Li Z, Liu L, et al. Partitioning behavior of amino acids in aqueous two-phase systems formed by imidazolium ionic liquid and dipotassium hydrogen phosphate [J]. Journal of Chromatography A, 2012, 1231: 2-7
[20]
Freire M G, Neves C M S S, Marrucho I M, et al. High-performance extraction of alkaloids using aqueous two-phase systems with ionic liquids [J]. Green Chemistry, 2010, 12 (10): 1715-1718
[21]
Novak U, Pohar A, Plazl I, et al. Ionic liquid-based aqueous two-phase extraction within a microchannel system [J]. Separation and Purification Technology, 2012, 97: 172-178
[22]
Pei Y C, Li Z Y, Liu L, et al. Selective separation of protein and saccharides by ionic liquids aqueous two-phase systems [J]. Science China Chemistry, 2010, 53 (7): 1554-1560
[23]
Li Z, Pei Y, Wang H, et al. Ionic liquid-based aqueous two-phase systems and their applications in green separation processes [J]. TrAC Trends in Analytical Chemistry, 2010, 29 (11): 1336-1346
[24]
Ling Y Q, Nie H L, Su S N, et al. Optimization of affinity partitioning conditions of papain in aqueous two-phase system using response surface methodology [J]. Separation and Purification Technology, 2010, 73 (3): 343-348
[25]
Cao Duixi (曹对喜), Du Zheng (杜征), Han Yuting (韩玉婷), et al. Purification of papain by aqueoustwo-phase extraction [J]. Acad Period Farm Prod Proces (农产品加工), 2010 (10) : 21-23
[26]
Zeng Q, Wang Y, Li N, et al. Extraction of proteins with ionic liquid aqueous two-phase system based on guanidine ionic liquid [J]. Talanta, 2013 (116): 409-416
[27]
Mehrnoush A, Sarker M Z I, Mustafa S, et al. Direct purification of pectinase from mango (Mangifera Indica cv. Chokanan) peel using a PEG/salt-based aqueous two phase system [J]. Molecules, 2011, 16 (10): 8419-8427
[28]
Huang S, Wang Y, Zhou Y, et al. Choline-like ionic liquid-based aqueous two-phase extraction of selected proteins [J]. Analytical Methods, 2013 (5): 3395-3402
[29]
Lin X, Wang Y, Zeng Q, et al. Extraction and separation of protions by ionic liquid aqueous two-phase system [J]. Analyst, 2013 (138): 6445-6453
[30]
Xia Hansong (夏寒松), Yu Jiang (余江), Hu Xuesheng (胡雪生), et al. Phase behavior of ionic liquids (Ⅱ): Aqueous two-phase [J]. Journal of Chemical Industry and Engineering (China) (化工学报), 2006, 57 (9): 2149-2151
[31]
Cao Q, Quan L, He C, et al. Partition of horseradish peroxidase with maintained activity in aqueous biphasic system based on ionic liquid [J]. Talanta, 2008 (77): 160-165
[32]
Lu Y, Lu W, Wang W, et al. Thermodynamic studies of partitioning behavior of cytochrome c in ionic liquid-based aqueous two-phase system [J]. Talanta, 2011, 85 (3): 1621-1626
[33]
Gu Yanlong (顾彦龙), Peng Jiajian (彭家建), Qiao Kun (乔琨), et al. Room temperature ionic lliquids and their applications in catalysis and organic reactions [J]. Progress in Chemistry (化学进展), 2003, 15 (3): 222-241
[34]
Pei Y, Wang J, Wu K, et al. Ionic liquid-based aqueous two-phase extraction of selected proteins [J]. Separation and Purification Technology, 2009, 64 (3): 288-295
