The assay of antifungal activity by using the culture medium with 0.5% red rice powder
demonstrated that, excepting the Aspergillus niger strain, all fungal strains were more or
1 2 less inhibated in presence of this natural food dye. These fungal colonies showed values
of inhibition ratio higher than 10% and a maximum value of 43% for Mucor sp.
Moreover, the culture medium with red mold rice powder altered the aspect of some
fungal colonies comparatively with the control colonies: the Fusarium and Alternaria
strains are less grown and the production of spores is diminished, while the Aspergillus
colonies have the same aspect.