Preparation and Characterization of β-glucosidase Films for Stabilization and Handling in Dry Configurations.

Abstract:

BACKGROUND:Although the stability of proteins is of significance to maintain protein function for therapeutical applications, this remains a challenge. Herein, a general method of preserving protein stability and function was developed using gelatin films. METHODS:Enzymes immobilized onto films composed of gelatin and Ethylene Glycol (EG) were developed to study their ability to stabilize proteins. As a model functional protein, β-glucosidase was selected. The tensile properties, microstructure, and crystallization behavior of the gelatin films were assessed. RESULTS:Our results indicated that film configurations can preserve the activity of β-glucosidase under rigorous conditions (75% relative humidity and 37°C for 47 days). In both control films and films containing 1.8 % β-glucosidase, tensile strength increased with increased EG content, whilst the elongation at break increased initially, then decreased over time. The presence of β-glucosidase had a negligible influence on tensile strength and elongation at break. Scanning electron-microscopy (SEM) revealed that with increasing EG content or decreasing enzyme concentrations, a denser microstructure was observed. CONCLUSION:In conclusion, the dry film is a promising candidate to maintain protein stabilization and handling. The configuration is convenient and cheap, and thus applicable to protein storage and transportation processes in the future.

journal_name

Curr Pharm Biotechnol

authors

Zhang L,Shen Y,Lu W,Guo L,Xiang M,Zhang D

doi

10.2174/1389201020666191202145351

subject

Has Abstract

pub_date

2020-01-01 00:00:00

pages

741-747

issue

8

eissn

1389-2010

issn

1873-4316

pii

CPB-EPUB-102707

journal_volume

21

pub_type

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