Figure 2: Changes in residual lignin content in substrates composed of peanut shells (PS) and cornstalks (CS) before (day 0) and after degradation (days 30, 60, 90, and 120) by Pleurotus ostreatus. Cont1-100PS and Cont2- 100CS are controls composed of 100% peanut shells and 100% cornstalks respectively. The bar charts show the lignin content of each substrate during the fermentation process while the line graph represents losses in lignin (%) at each substrate at the end of fermentation (120 days). Means with same letters on line graph are not significantly different (p<0.05).