Identification of low molecular weight aromatic compounds by gas chromatography–mass spectrometry (GC–MS) from kraft lignin degradation by three Bacillus sp.

摘要: Abstract Three bacterial strains identified as Paenibacillus sp., Aneurinibacillus aneurinilyticus and Bacillus sp. have been shown to decolourise kraft lignin in 6 days of incubation. The release low molecular weight aromatic compounds by these during degradation was analysed GC–MS analysis. total ion chromatograph (TIC) ethyl acetate extract from sample inoculated similar control except some minor changes the chromatographic profile indicating incapability this bacterium modify lignin. On other hand TIC A. caused formation several lignin-related compound that were not present control. degraded guaiacol, acetoguiacone, gallic acid ferulic while t -cinnamic acid, 3,4,5 trimethoxy benzaldehyde, oxidization coniferylic (G units) sinapylic (S alcohol polymer. Differences between different treatment strain-specific. Among compounds, 3,4,5-trimethoxy benzaldehyde could be useful industry preservatives, aromas perfumes.