Use of onion peels as an economical substrate for microbial inulinase production under solid state fermentation

Onion (Allium cepa) is a valuable vegetable and candidate for sustainable waste management in agri-food industry. The purpose of the current paper was to research utilization onion peels an economical substrate inulinase production by Yarrowia lipolytica ISF7 strain under solid state fermentation (SSF). SSF preferred obtain effective low-cost production. medium designation optimized using Taguchi design experiment. For this purpose, L9 orthogonal array layout applied moisture content, initial pH incubation time as selected factors at three levels. results showed that minimum activity 22.7 U g-1 dry (ds) determined 6th experimental setup while highest 292.2 gds-1 measured from 5th setup. predicted value 311.6 which closer obtained result (305.1 gds-1). Consequently, can be achieved Y. economic SSF.