6 research outputs found

    Comparative analysis of nonvolatile and volatile metabolites in <i>Lichtheimia ramosa</i> cultivated in different growth media

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    <p><i>Lichtheimia ramosa</i> is one of the predominant filamentous fungi in Korean traditional <i>nuruk</i>. The nonvolatile and volatile metabolites of <i>L. ramosa</i> cultivated in three growth media: complete medium (CM), potato dextrose broth (PDB), and sabouraud dextrose broth (SDB), were investigated and compared. Among nonvolatile metabolites, serine, lysine, and ornithine increased in CM and PDB cultivated with <i>L. ramosa</i> during the exponential phase. In addition, glucose level increased in CM whereas decreased in PDB and SDB. The major volatile metabolites in the extract samples were acetic acid, ethanol, 3-methyl-2-buten-1-ol, 2-phenylethanol, ethylacetate, 2-furaldehyde, 5-(hydroxymethyl)-2-furaldehyde, 2,3-dihydro-3,5,-dihydroxy-6-methyl-4<i>H</i>-pyran-4-one, and <i>α</i>-humulene. In particular, the levels of volatile metabolites related to <i>makgeolli</i> (e.g., acetic acid, ethanol, and ethyl acetate) were highest in extracts cultivated in CM. On the other hand, the level of 2-phenylethanol was relatively higher in PDB and SDB, possibly due to there being more phenylalanine present in the biomass sample in media.</p
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