The reducing sugar concentration from potato peel hydrolysate was 4 g/l. Potato peel water content is estimated
at 80 % [12]. This gives the sugar overall recovery of 10 %. A niger posseses an array of extracellular enzymes for
long chain carbohydrates including cellulase, xylanase, amylase, and glucoamylase [13]. The low recovery may be
due to the limitation in the enzymes activity in this solid state fermentation. While it is less expensive, the solid state
fermentation technique has a drawback of a low substrate and metabolite transport.