Fourier
transform infra-red spectroscopy, X-ray diffraction, and chemical analysis showed that bio-pretreated
corn stalk increased the mechanical properties of the fiberboard because it had more than twice the number
of hydroxyl group, an 18% higher crystallinity, and twice the polysaccharide content of untreated corn
stalk. Its laccase content was 4.65 ± 0.38 U/g. Corn stalk-based fiberboard production did not require
adhesives, thus eliminating a potential source of toxic emissions such as formaldehyde gas