Effects and Characterization of Comminuting Pretreatment on the
Fiber Structure of Corn Stover
WANG Ding-man1,2, WANG Wei-wei2, QIAO Lin2, HE Bei-bei2, LI Ai-ke2, ZHAO Lu-yao2*
(1. College of Animal Science and Nutrition Engineering, Wuhan Polytechnic
University, Wuhan, Hubei 430023, China;
2. Grain Quality and Nutrition Research Institute, Academy of National Food and
Strategic Reserves Administration, Beijing 100037, China)
Abstract: To investigate the microscopic modification effects of mechanical comminution pretreatment on the fiber structure of corn stover and improve its the resource utilization potential, natural corn stover was selected in this study. With mechanical comminution applied as the pretreatment method, multiple characterization techniques including X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM) were adopted to systematically explore the regulatory effects of mechanical comminution pretreatment on the crystal structure, functional group properties and micromorphology of corn stover fibers. The results demonstrated that mechanical comminution pretreatment could disrupt the crystalline structure of cellulose in corn stover, reduce its crystallinity, and expose more amorphous regions and reactive sites. Meanwhile, the treatment could disintegrate intact long strip fibers into micron scale fragmented particles, strip the surface lignin barrier, generate abundant cracks and rough fracture surfaces, and significantly increase the specific surface area of the raw material.This study elucidates the microscopic impacts of enzymatic hydrolysis and fermentation accessivility through mechanical comminution pretreatment, and provides a theoretical basis for the resource utilization of corn stover in scenarios such as feed quality improvement and bioconversion.
Key words: corn stover; fiber; XRD; FTIR; SEM; structure
Chinese Library Classification Number: TS210.9
Documentary Identification Code: A Article ID: 1007-7561(2026)05-0076-09
Published time on CNKI: 2026-08-27 15:37:44
Published address on CNKI: https://link.cnki.net/urlid/11.3863.ts.20260827.1050.010
