Superfine pulverisation pretreatment to enhance crystallinity of cellulose from Lycium barbarum L. leaves

Peize Song; Fa Zhou; Feiyang Li; Zhe Han; Lan Wang; Jiana Xu; Bo Zhang; Mengze Wang; Junfeng Fan; Bolin Zhang

doi:10.1016/j.carbpol.2020.117207

Superfine pulverisation pretreatment to enhance crystallinity of cellulose from Lycium barbarum L. leaves

Carbohydr Polym. 2021 Feb 1:253:117207. doi: 10.1016/j.carbpol.2020.117207. Epub 2020 Oct 13.

Authors

Peize Song¹, Fa Zhou¹, Feiyang Li¹, Zhe Han¹, Lan Wang¹, Jiana Xu¹, Bo Zhang¹, Mengze Wang¹, Junfeng Fan², Bolin Zhang¹

Affiliations

¹ Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China.
² Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China. Electronic address: fanjunfeng@bjfu.edu.cn.

PMID: 33278976
DOI: 10.1016/j.carbpol.2020.117207

Abstract

Superfine pulverisation (SFP) pretreatment of Lycium barbarum L. leaves was performed to obtain highly crystalline cellulose. Compared with other common pulverisation methods, SFP enhanced cellulosic crystallinity by 18.3 % and 8.4 %, with and without post-acid treatments, respectively. XRD and solid-state NMR analyses showed that SFP facilitated the exposure of amorphous substances (i.e., hemicellulose and lignin) to NaOH and H₂O₂. Large amounts of silicon (5.5 %) and aluminium (2.1 %) were found to incorporate into the crystalline regions of SFP-produced cellulose. Further FTIR and thermogravimetric analyses revealed that SFP-produced cellulose contained large amounts of hydroxyl groups, affecting the cellulosic crystallinity and thermal stability. These findings demonstrate the potential for SFP to serve as a green technology for production of highly crystalline and mineral-rich cellulose.

Keywords: Green chemistry; Highly crystalline cellulose; Minerals; Silicon nanoparticles; Solvent accessibility.

MeSH terms

Aluminum / chemistry
Cellulose / chemistry*
Crystallization
Hydrogen Peroxide / chemistry
Lignin / chemistry
Lycium / chemistry*
Particle Size
Plant Extracts / chemistry*
Plant Leaves / chemistry*
Polysaccharides / chemistry
Powders / chemistry
Silicon / chemistry
Sodium Hydroxide / chemistry
Sulfuric Acids / chemistry
Temperature

Substances

Plant Extracts
Polysaccharides
Powders
Sulfuric Acids
Sodium Hydroxide
hemicellulose
Cellulose
Lignin
Hydrogen Peroxide
Aluminum
sulfuric acid
Silicon