Antifungal Activity and Stability of Aspergillus Niger xj Fermentation Broth

To study the antifungal spectrum and stability of the antifungal components from Aspergillus niger xj fermentation broth.The antifungal spectrum was measured through filter paper method using 5 common pathogenic fungi as indicators.The antifungal stability was measured through changing of temperature,light,and pH.The fermentation broth from Aspergillus niger xj had varying degrees of inhibitory activity towards 5 pathogenic fungi species.Among these,activity against Fusarium solan was the highest,with inhibiting zones diameter of(45.11±0.21) mm.The antifungal components in the fermentation broth was stable to temperature,but wasn't to light and pH.The fermentation broth from Aspergillus niger xj had a broad antifungal spectrum.The antifungal substance should be extracted at80 ℃,pH 7.0.