Author/Authors :
Mitra، نويسنده , , Debjani and Rasmussen، نويسنده , , Mary L. and Chand، نويسنده , , Priyanka and Chintareddy، نويسنده , , Venkat Reddy and Yao، نويسنده , , Linxing and Grewell، نويسنده , , David and Verkade، نويسنده , , John G. and Wang، نويسنده , , Tong and (Hans) van Leeuwen، نويسنده , , J.، نويسنده ,
Abstract :
This study highlights the potential of oleaginous fungus, Mucor circinelloides in adsorbing/assimilating oil and nutrients in thin stillage (TS), and producing lipid and protein-rich fungal biomass. Fungal cultivation on TS for 2 days in a 6-L airlift bioreactor, resulted in a 92% increase in oil yield from TS, and 20 g/L of fungal biomass (dry) with a lipid content of 46% (g of oil per 100 g dry biomass). Reduction in suspended solids and soluble chemical oxygen demand (SCOD) in TS were 95% and 89%, respectively. The polyunsaturated fatty acids in fungal oil were 52% of total lipids. Fungal cells grown on Yeast Malt (YM) broth had a higher concentration of γ-linolenic acid (17 wt.%) than those grown on TS (1.4 wt.%). Supplementing TS with crude glycerol (10%, v/v) during the stationary growth phase led to a further 32% increase (from 46% to 61%) in cellular oil content.
Keywords :
thin stillage , Oleaginous , Value-addition , Mucor circinelloides , Fungal lipids
