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.
Keywords: fermentation; fibreboard; fungi; optimization; waste.
© 2016 The Society for Applied Microbiology.