In many previous studies, the optimization of GlcUA production
during the fermentative process was limited by the use of the
whole traditional “mother-tea fungus” layer as the starter culture.
This layer contains various types of microorganisms, and the
particular yeasts or glucuronic acid producing bacterial strains had
not been fully characterized (Vına, Semjonovs, et al., 2013; Yavari
et al., 2011). 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.
In many previous studies, the optimization of GlcUA productionduring the fermentative process was limited by the use of thewhole traditional “mother-tea fungus” layer as the starter culture.This layer contains various types of microorganisms, and theparticular yeasts or glucuronic acid producing bacterial strains hadnot been fully characterized (Vına, Semjonovs, et al., 2013; Yavariet al., 2011). Also, kombucha may contain many contaminant microorganisms such as Penicillium spp. and Candida albicans, thesecontaminating strains can compete with the essential kombuchamicroorganism for nutrition and reduce the efficiency of fermentation and glucuronic acid production.
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