Abstract
Trichosporon cutaneum strain KUY-6A, a cyclohexanecarboxylic acid-utilizing yeast, was able to grow on cyclopentanol (CPOL) as a sole source of carbon and energy. Growth experiments revealed the strain, KUY-6A, could utilize up to 42 mM of CPOL with an optimum at 24 mM. Optimal growth was found between pH 4.0 to 9.0. The generation time under optimal growth conditions on CPOL was 3.0 h. Analysis indicated that cyclopentanone (CPON) and glutaric acid were intermediates of CPOL metabolism in strain KUY-6A. The results of growth and enzyme experiments are consistent with the degradation of CPOL via CPON, 5-valerolactone, 5-hydroxyvaleric acid, and glutaric acid.
