Comparison of using formaldehyde and carboxy methyl chitosan in preparation of Fe3O4 superparamagnetic nanoparticles-chitosan hydrogel network: Sorption behavior toward bovine serum albumin

被引:38
作者
Sadeghi, Meisam [1 ]
Hanifpour, Fatemeh [2 ]
Taheri, Reza [3 ]
Javadian, Hamedreza [4 ]
Ghasemi, Maryam [4 ]
机构
[1] Babol Univ Technol, Dept Chem Engn, Babol Sar, Iran
[2] Sharif Univ Technol, Dept Energy Engn, Tehran, Iran
[3] Payame Noor Univ, Dept Chem, POB 19395-3697, Tehran, Iran
[4] Islamic Azad Univ, Young Researchers & Elite Club, Arak Branch, Arak, Iran
关键词
Bovine serum albumin; Fe3O4 superparamagnetic nanoparticles; Chitosan hydrogel; Magnetic separation; Formaldehyde; Carboxy methyl chitosan; POORLY ABSORBABLE DRUGS; ABSORPTION ENHANCERS; PROTEIN; ADSORPTION; PARTICLES; DELIVERY; ENCAPSULATION; POLYMERS;
D O I
10.1016/j.psep.2016.03.005
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A novel and cost effective method of bio-separation developed recently is magnetic separation technology. In this study, super paramagnetic Fe3O4 nanoparticles are used for separation of bovine serum albumin (BSA) protein from plasma/serum samples at optimized conditions. The synthesis of chitosan hydrogel networks by two variant approaches that involve (1) crosslinking of chitosan with formaldehyde and (2) formation of carboxy methyl chitosan mediated complex, was investigated and the percent of gelation, swelling ratio and equilibrium water content were calculated. The results revealed the formation of better quality hydrogel from the first approach. In step 1, to quantify the BSA separation using the chitosan gel, the protein yield and purification factor relationships were introduced. In step 2, superparamagnetic Fe3O4 nanoparticles were synthesized using co-precipitation method and immobilized on chitosan hydrogel networks which were produced following the first technique and used in magnetic separation approach. Fe3O4 nanoparticles were immobilized on chitosan hydrogel network and their size was calculated to be about 9.8 nm. The separation of BSA by hydrogel-nanoparticles network was evaluated comprehensively and the conditions for achieving the highest separation efficiency were determined. The percentage of gelation reached to its maximum value by adding 7 mL formaldehyde. Results from atomic force microscopy indicated that separation efficiency significantly improved from 48% to 70% with less number of steps by using hydrogel-nanoparticles network as compared to chitosan hydrogel network. The results also confirmed that iron oxide nanoparticles maintained their magnetic properties after immobilization on the chitosan hydrogel network. Moreover, the separation process was found to be more convenient and efficient in case of hydrogel-nanoparticles network, due to the application of simple magnet for separation. (C) 2016 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:119 / 128
页数:10
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