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Production of Chiral (S)-styrene Oxide by Rhodosporidium sp. SJ-4 which has an Epoxide Hydrolase Activity

에폭사이드 가수분해효소를 갖는 Rhodosporidium sp. SJ-4를 이용한 광학활성 (S)-styrene Oxide의 생산

  • Published : 2005.10.01

Abstract

A yeast strain utilizing styrene epoxide as a sole carbon and energy source was isolated from soil samples for the production of enantiopure of styrene epoxide by kinetic resolution. The strain, identified as a Rhodosporidium toruloides SJ-4, expressed an epoxide hydrolase which preferentially converted (R)-styrene epoxide into the corresponding diol. A maximum activity of 135 U/L was observed when biomass (dry cell mass) reached 6.7 g/L at 21 h of batch culture. Under the partially optimized reaction conditions ($35^{\circ}C$ and pH 8.0), the optically pure (S)-styrene epoxide was obtained with the yield of 21% when the initial substrate concentration was 100 mM. The reaction was completed at 9 h.

Keywords

References

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