Abstract:Five species of polysaccharide decomposition fungi(Aspergillus niger,Aspergillus oryzae,Phanerochaete chrysosporium,Trichoderma viride and Trichoderma koningii) and three species of yeasts(Candida utilis,Candida tropicalis and Saccharomyces cerevisiae) were cultured respectively in the substrate of notoginseng residues,to select the suitable strains for the production of protein feed.The result indicated that the metabolization capability on notoginseng residues by polysaccharide decomposition fungi was stronger than that by yeasts.During the whole fermentation period,the amplitude of variation of reducing sugar content,pH value and dry weight in the fermentation culture by polysaccharide decomposition fungi is larger than that by yeasts.The metabolization capability of Aspergillus niger on notoginseng residues was the strongest in all tested fungi,and the maximum of reducing sugar content in the fermentation culture can reached at 250 mg/g,and the loss ratio of dry weight can reached at 42.6% and the true protein content in the fermentation culture can reached at 23.92% after five-days′ fermentation.
