Also, kombucha may contain many contaminant microorganisms such as Penicillium spp. and Candida albicans, these contaminating strains can compete with the essential kombucha microorganism for nutrition and reduce the efficiency of fermentation and glucuronic acid production. Moreover, Penicillium spp., a hyalohyphomycosis mold and C. albicans are infectious and opportunistic human pathogens