Abstract:The producing conditions of single cell protein feed from oil-tea-cake were studied by solid state fermentation. The optimal culture conditions were as follows: ratio of oil-tea-cake to swine blood power of 17:3, ratio of fermenting medium to water of 1:1.2, (NH4)2SO4 content of 2.0% and initial pH value of 5.0~5.5. The fermentation conditions were also optimized as follows: in 250 mL of a triangular flask, the loading volume of the fermentation medium of 15 g, inoculation size of 10%, the ratio of mildew to yeast of 1:1 and fermentation time of 4day. Under those conditions, the maximum dry cell weight was 21.25 g/L.
