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Novel design solid state bioreactor, FERMSOSTAT, had been evaluated in cellulase production studies using local isolate Aspergillus niger USM AI 1 grown on sugarcane bagasse and palm kernel cake at 1:1 (w/w) ratio. Under optimised SSF conditions of 0.5kg substrate; 70% (w/w) moisture content; 30°C; aeration at 4L/h · g fermented substrate for 5min and mixing at 0.5rpm for 5min, about 3.4U/g of Filter paper activity (FPase) was obtained. At the same time, comparative studies of the enzymes production under the same SSF conditions indicated that FPase produced by A. niger USM AI 1 was about 35.3% higher compared to Trichoderma reesei. This shows that the performance of this newly designed SSF bioreactor is acceptable and potentially used as prototype for larger-scale bioreactor design.