Optimal conditions for production of (R)-1-phenylpropanol (cas 1335-12-2) by Fusarium moniliforme strain MS31

Add time:09/06/2019    Source:sciencedirect.com

Resting cells of Fusarium moniliforme strain MS31 produced (R)-1-phenylpropanol from propylbenzene. The components of the medium and the reaction conditions were adjusted to increase the specific activity of the hydroxylating enzyme involved. Glucose and sodium nitrate were selected as carbon and nitrogen sources, respectively. The substrate, propylbenzene, inhibited fungal growth and the activity of the enzyme. Acetoin added to the medium increased both growth and activity of the enzyme, and hydroxylation of propylbenzene increased by 1.4-fold. Maximum bioconversion of propylbenzene by resting cells of the fungus was at 25–30°C and pH 7.0 with cells at concentration of 40 mg (dry) per milliliter of reaction mixture. Conversion was accelerated as soon as propylbenzene was added; slowing 2 h later. In the end, F. moniliforme strain MS31 produced (R)-1-phenylpropanol with an enantiomeric excess of 98% at the concentration of 16 mM (2.2 mg·ml−1).

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