The different pretreatments show specific effects on the composition
of OPEFB. After fungal pretreatment, the hemicellulose
content increased from 23.1% in the untreated to 27.5% in the fungal
pretreated OPEFB while cellulose content reduced from 39.1%
in the untreated to 34.2% (Table 1), this could be due to attack
on the linkages between lignin and carbohydrate that exist in
hemicellulose by the fungi. There was a reduction in the ASL lignin
of fungal pretreated OPEFB (25.9%) compared to untreated one
(26.6%), which indicates that white rot fungi may have degraded
the lignin. This is in agreement with previous report on lignin degradation
by white rot fungi (Isroi et al., 2011). Phosphoric acid