Partition behavior of papain in [Cnmim]BF4-NaH2PO4 aqueous#br#
two-phase system

CAI Tao; ZHANG Haide; DONG Anhua; PENG Jian; WU Rui; ZHU Yingrui

doi:10.11949/j.issn.0438-1157.20141927

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Partition behavior of papain in [C_nmim]BF₄-NaH₂PO₄ aqueous#br# two-phase system

更新时间：2025-12-10

- Partition behavior of papain in [C_nmim]BF₄-NaH₂PO₄ aqueous#br# two-phase system
- CIESC Journal Issue 6, Pages: 2017-2022(2015)
- 作者机构：
  
  海南大学食品学院,海南,海口,570228
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141927
  CLC： 658.2
- Online First：25 March 2015，
  
  Published：25 March 2015
- 稿件说明：
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CAI Tao, ZHANG Haide, DONG Anhua, et al. Partition behavior of papain in [C_nmim]BF₄-NaH₂PO₄ aqueous#br# two-phase system[J]. CIESC Journal, 2015, (6): 2017-2022. DOI: 10.11949/j.issn.0438-1157.20141927.
DOI：

CAI Tao, ZHANG Haide, DONG Anhua, et al. Partition behavior of papain in [C_nmim]BF₄-NaH₂PO₄ aqueous#br# two-phase system[J]. CIESC Journal, 2015, (6): 2017-2022. DOI: 10.11949/j.issn.0438-1157.20141927. DOI：

摘要

为了研究木瓜蛋白酶在[Cnmim]BF4-NaH2PO4双水相体系中的分配行为

在298.15 K条件下利用浊点法测定了[Cnmim]BF4-NaH2PO4双水相体系的双节线和液液相平衡数据

建立了木瓜蛋白酶在该体系中的三维分配模型。利用Merchuk方程、Othmer-Tobias方程和Bancroft方程分别关联了双节线数据、液液相平衡数据

拟合度分别在0.975、0.994以上

结果满意。木瓜蛋白酶分配系数的对数与该体系上相的离子液体浓度和下相的盐浓度相关度都较高

故通过Matlab建立了三者之间的分配模型

实验值和预测值之间的相对偏差均在5%以内

表明该模型能有效地预测木瓜蛋白酶在[Cnmim]BF4-NaH2PO4双水相体系中的分配行为。

Abstract

To investigate the partition behavior of papain in the ionic liquids aqueous two-phase system containing [Cnmim]BF4+NaH2PO4

the binodal curve and liquid-liquid equilibrium was measured by means of cloud point at T 298.15 K and a 3D theoretical model was established. The data fitting of binodal and the equilibrium was based on Merchuk

Othmer-Tobias and Bancroft equations with a high degree of fitting of above 0.975 and 0.994

respectively. Then

the correlation between logarithm of the partition coefficient and both the concentration of ionic liquids in upper phase and the salt concentration in lower phase was studied

and a partition model was established by Matlab. The mean relative deviations between the experimental and calculated data were <5%

which was sufficient to prove the reliability of this model.

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