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author:

Zhou, Min (Zhou, Min.) [1] | Ju, Xin (Ju, Xin.) [2] | Zhou, Zheng (Zhou, Zheng.) [3] | Yan, Lishi (Yan, Lishi.) [4] | Chen, Jiajia (Chen, Jiajia.) [5] | Yao, Xuemei (Yao, Xuemei.) [6] | Xu, Xinqi (Xu, Xinqi.) [7] (Scholars:许鑫琦) | Li, Liang-Zhi (Li, Liang-Zhi.) [8]

Indexed by:

EI Scopus SCIE

Abstract:

To achieve high ionic liquid (IL) tolerance and promote in situ enzymatic hydrolysis of biomass, four metal organic framework (MOF) carriers, including ZIF-8, UIO-66-NH2, MIL-100-Fe, and PCN-250, were used for cellulase immobilization through simple physical adsorption. The results showed that ZIF-8 had the largest enzyme adsorption capacity at 176.16 mg/g support. In addition, the immobilized cellulases activity was evaluated in the presence of 1-ethyl-3-methylimidazolium diethylphosphate ([Emim]DEP) by using caryboxymethyl cellulose (CMC) and filter paper (FP) as substrates. When IL concentration increased from 0% to 50% (v/v), the immobilized cellulase displayed superior IL tolerance compared with free cellulase. In particular, ZIF-8-immobilized cellulase exhibited a remarkable IL tolerance, in which the activity of caryboxymethyl cellulase (CMCase) and filter paper cellulase (FPase) were increased by 112.59% and 59.86% in 50% (v/v) [Emim]DEP, respectively. The analysis of kinetic parameters further suggested that the immobilized cellulase had a lower equilibrium dissociation constant (k(d)) value and a higher final enzyme plateau activity (a,,) value in a reaction system involving IL, indicating that the immobilized enzyme can effectively reduce cellulase inactivation caused by IL. Eventually, ZIF-8-immobilized cellulase with in situ hydrolysis of bagasse increased by 92.92% compared with free cellulase in 50% (v/v) [Emim]DEP.

Keyword:

Cellulase Immobilization Inactivation kinetics Ionic liquid Lignocellulose Metal-organic framework

Community:

  • [ 1 ] [Zhou, Min]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, 1 Ke Rui Rd, Suzhou 215009, Peoples R China
  • [ 2 ] [Ju, Xin]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, 1 Ke Rui Rd, Suzhou 215009, Peoples R China
  • [ 3 ] [Zhou, Zheng]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, 1 Ke Rui Rd, Suzhou 215009, Peoples R China
  • [ 4 ] [Yan, Lishi]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, 1 Ke Rui Rd, Suzhou 215009, Peoples R China
  • [ 5 ] [Chen, Jiajia]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, 1 Ke Rui Rd, Suzhou 215009, Peoples R China
  • [ 6 ] [Yao, Xuemei]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, 1 Ke Rui Rd, Suzhou 215009, Peoples R China
  • [ 7 ] [Li, Liang-Zhi]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, 1 Ke Rui Rd, Suzhou 215009, Peoples R China
  • [ 8 ] [Xu, Xinqi]Fuzhou Univ, Fujian Key Lab Marine Enzyme Engn, Xiyuangong Rd, Fuzhou 350116, Fujian, Peoples R China

Reprint 's Address:

  • [Li, Liang-Zhi]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, 1 Ke Rui Rd, Suzhou 215009, Peoples R China

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Source :

ACS SUSTAINABLE CHEMISTRY & ENGINEERING

ISSN: 2168-0485

Year: 2019

Issue: 23

Volume: 7

Page: 19185-19193

7 . 6 3 2

JCR@2019

7 . 1 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:184

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 50

SCOPUS Cited Count: 54

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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