, Volume 43, Issue 6, pp 974-977

Optical resolution of racemic pantolactone with a novel fungal enzyme, lactonohydrolase

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A novel enzymatic process for the optical resolution of racemic pantolactone through the stereo-specific hydrolysis of d-pantolactone by lactonohydrolase of Fusarium oxysporum is described. F. oxysporum cells were found to catalyze the stereoselective hydrolysis of the d-enantiomer of racemic pantolactone. With 135 g/l dl-pantolactone as the substrate, 41% was hydrolyzed and pantoic acid with an optical purity of 90% enantiomeric excess (for d-pantoic acid) was formed.