@article{mbs:/content/journal/micro/10.1099/00221287-132-10-2793, author = "Gupta, Jugal K. and Jebsen, Cornelia and Kneifel, Helmut", title = "Sinapic Acid Degradation by the Yeast Rhodotorula glutinis", journal= "Microbiology", year = "1986", volume = "132", number = "10", pages = "2793-2799", doi = "https://doi.org/10.1099/00221287-132-10-2793", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-132-10-2793", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "SUMMARY: The degradation of sinapic acid, a monomer of hardwood lignins, by the yeast Rhodotorula glutinis was studied. Syringic acid, 3-O-methyl gallic acid, gallic acid and 2,6-dimethoxy-1,4-benzoquinone were identified as degradation products. Glucose was shown to be required for the demethylation of the methoxy groups on the ring. Unlike in the bacterium Pseudomonas putida, ring cleavage seemed to occur via gallic acid and not via methyl gallic acid. Cell-free oxidative decarboxylase (hydroxylase) activity was detected; this enzyme might be ultimately responsible for the formation of dimethoxyquinone.", }