studied the possibility of using waste bread showing high level of surface mould contamination for ethanol production,this resulted in a decrease of ethanol yield in comparison to non contaminated material (ca. 230–250 g kg1 depending on the raw
material loading in the fermentation feed). The other possibilities for waste bread utilization via biotechnological processes are in example: solid state fermentation by Aspergillus awamori for production of amylases and proteases