当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES期刊下所有文献 > Co-immobilization of glucose oxidase and catalase in silica inverse opals for glucose removal from commercial isomaltooligosaccharide.

Co-immobilization of glucose oxidase and catalase in silica inverse opals for glucose removal from commercial isomaltooligosaccharide.

Abstract：

:In this work, glucose oxidase (GOD) and catalase (CAT) were co-immobilized on novel silica inverse opals (IO-SiO2) through sol-gel process. The immobilized bi-enzyme system named GOD/CAT@IO-SiO2 was successfully fabricated and characterized. Morphology characterization indicated that GOD/CAT@IO-SiO2 had hierarchical porous structure, and the pore diameter of macroporous and mesoporous were 500±50nm and 6.8nm, respectively. The macrospores were connected through windows of 100±30nm. The results of stability tests indicated that both acid (or base) resistance and thermal tolerance of GOD/CAT@IO-SiO2 were improved. When GOD/CAT@IO-SiO2 was used to remove glucose from commercial isomaltooligosaccharide (IMO), the immobilized bi-enzyme system exhibited the good performance. The removal efficiency of glucose reached up to 98.97% under the conditions of GOD/CAT activity ratio of 1:30, the amount of enzyme of 68.8mg, reaction time of 9.39h, reaction temperature of 35.2°C and pH of 7.05. After reused 6 times, 79.19% of removal efficiency could be still retained. The present work demonstrates that the immobilized bi-enzyme (GOD/CAT@IO-SiO2) is not only a very promising system for glucose removal but also has great potential for applications in production of gluconic acid, preparation of biosensors, enzyme bioreactors, etc.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Zhao B,Zhou L,Ma L,He Y,Gao J,Li D,Jiang Y

doi

10.1016/j.ijbiomac.2017.10.074

subject

Has Abstract

pub_date

2018-02-01 00:00:00

pages

2034-2043

issue

Pt B

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(17)33132-X

journal_volume

107

pub_type

杂志文章

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