Efficient immobilization of cellulase on polydopamine-modified nickel foam for enhanced lignocellulose conversion

IF 9.7 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology Pub Date : 2025-03-06 DOI:10.1016/j.biortech.2025.132361

Shi Wang , Bo Zhao , Shengxian Cao , Gong Wang , Zheng Dong , Zheng Yang , Xinglin Niu , Qinglong Zhao , Yongli Wang , Yue Ma

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Abstract

In situ saccharification of lignocellulose is essential for efficiently converting biomass into value-added products. In this study, nickel foam underwent electrochemical pore size regulation and polydopamine modification to produce polydopamine-modified foam nickel with aperture control (PNiF-AC), which was used for cellulase immobilization and in situ saccharification of wheat straw. PNiF-AC demonstrated excellent hydrophilicity, biocompatibility, and robust adsorption–desorption cycling properties. Immobilizing cellulase onto PNiF-AC significantly improved its thermal stability by 64.8 %. The immobilized cellulase yielded 17.0 mg/mL of reducing sugars during the in situ saccharification of wheat straw, representing a 20 % increase over free cellulase. Moreover, after eight cycles of magnetic stirring, the reducing sugar yield decreased by only 19.4 %, highlighting the remarkable reusability and stability of the immobilized cellulase. These findings establish polydopamine-modified foam nickel as an efficient platform for cellulase immobilization, presenting a novel approach to improving lignocellulose conversion processes.

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来源期刊

Bioresource Technology 工程技术-能源与燃料

CiteScore

20.80

自引率

19.30%

发文量

2013

审稿时长

12 days

期刊介绍： Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies. Topics include: • Biofuels: liquid and gaseous biofuels production, modeling and economics • Bioprocesses and bioproducts: biocatalysis and fermentations • Biomass and feedstocks utilization: bioconversion of agro-industrial residues • Environmental protection: biological waste treatment • Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.