Comparison of mixed enzymatic pretreatment and post-treatment for enhancing the cellulose nanofibrillation efficiency

Huiyang Bian; Maolin Dong; Lidong Chen; Xuelian Zhou; Shuzhen Ni; Guigan Fang; Hongqi Dai

doi:10.1016/j.biortech.2019.122171

Comparison of mixed enzymatic pretreatment and post-treatment for enhancing the cellulose nanofibrillation efficiency

Bioresour Technol. 2019 Dec:293:122171. doi: 10.1016/j.biortech.2019.122171. Epub 2019 Sep 20.

Authors

Huiyang Bian¹, Maolin Dong², Lidong Chen², Xuelian Zhou¹, Shuzhen Ni³, Guigan Fang⁴, Hongqi Dai⁵

Affiliations

¹ Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China; College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China.
² College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China.
³ Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China; College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
⁴ China Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Nanjing 210042, China.
⁵ Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China; College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China. Electronic address: hgdhq@njfu.edu.cn.

PMID: 31558340
DOI: 10.1016/j.biortech.2019.122171

Abstract

In this work, lignocellulosic nanofibrils (LCNF) produced from mechanical fibrillation with mixed enzymatic pretreatment or post-treatment were compared and the chemical composition, water retention value (WRV), average-number height and crystallinity for the obtained LCNF were evaluated. Compared to pure mechanical fibrillation, both mixed enzymatic pretreatment and post-treatment could efficiently facilitate cellulose nanofibrillation. Moreover, mixed enzymatic pretreatment was more suitable for LCNF production, resulting in a relatively higher WRV of 909% and smaller average-number height of 15 nm. These discoveries provide new insights into a more efficient biological method for the production and application of cellulose nanomaterials.

Keywords: Cellulose nanofibrillation; Endoglucanase; Enzymatic post-treatment; Enzymatic pretreatment; Xylanase.

MeSH terms

Cellulose*
Nanostructures*

Substances

Cellulose