Effects of Functional Nutrition Additions on Organic Acids Production from Blue-Green Algae Fermentation

Abstract:

In order to improve the yield of acid from blue-green algae,four kinds of nutrients(Fe,Fe2+,Ni2+ and yeast extract) with different concentrations were added to the fermentation froth,respectively.It was demonstrated that the addition of nutrients can increase the acid production in different degrees when compared with that of the control.With the different addition dosages,the yield of butyrate and organic acids were both improved,which were 109% and 84% increasements for 0.50 g/L of Fe,148% and 102% for 0.10 g/L of Fe2+ and 131% and 88% for 0.20 mg/L of Ni2+.Among them,yeast extract demonstrated that the best effect,when 0.25 g/L yeast extract was added,the yield of butyrate and total organic acidsachieved at 6803 mg/L and 9269 mg/L,respectively,which were 90% and 64% higher than that of the control.