Fig. 5From: Successful biosynthesis of natural antioxidant ergothioneine in Saccharomyces cerevisiae required only two genes from Grifola frondosaOptimization in EGT biosynthesis in S. cerevisiae with plasmid pRS42K-Gfegt1-Gfegt2. a Comparison of different carbon sources for EGT biosynthesis. b EGT contents and yeasts growth in each fermentation day. c Comparison of different glycerol concentration for EGT biosynthesis. d EGT biosynthesis through adding 1% glycerol in each fermentation day based on YPD medium (Treatment) and only based on YPD medium (CK)Back to article page