carbon source nonhuman 38 carbon 26 controlled study 22 priority journal 22 Carbon 20 article 20 Culture Media 16 glucose 16 metabolism 16 Article 14 Glucose 14 culture medium 14 nitrogen 14 unclassified drug 14 Nitrogen 12 Saccharomyces cerevisiae 12 Fermentation 10 chemistry 10 gene deletion 10 Repressor Proteins 8 Saccharomyces cerevisiae Proteins 8 bacterium culture 8 enzymology 8 fermentation 8 fungal strain 8 fungus growth 8 glycerol 8 pH 8 promoter region 8