Medium density fibreboard production by hot pressing without adhesive using Triarrhena sacchariflora residue bio‐pretreated by white‐rot fungus Coriolus versicolor

Aims To produce fibreboard with Triarrhena sacchariflora residue (TSR) without adhesive and understand the relationship between bio‐pretreatment and mechanical property of fibreboard. Methods and Results White‐rot fungus Coriolus versicolor was used to pretreat TSR, and biochemical and physical analysis were investigated by ultraviolet spectrophotometry, Fourier transform infrared spectroscopy and environmental scanning electron microscopy method. Conclusions TSR was suitable to produce fibreboard without adhesive by bio‐pretreatment with C. versicolor. The property of fibreboard became stronger by optimization of bio‐pretreatment parameters, and the moduli of rupture and elasticity of fibreboard were increased to 18·12 MPa and 4·3 GPa, respectively, which were close to national standard of medium‐density fibreboard with adhesive. Bio‐pretreated TSR increased the mechanical properties of fibreboard because of 1·4‐fold content of polysaccharide and 1·15 U g−1 laccase, more hydroxyl group and more porous surface structure than that of untreated TSR. Significance and Impact of the Study TSR‐based fibreboard production without adhesive eliminated potential formaldehyde gas emission.