Journal
CHEMCATCHEM
Volume 9, Issue 5, Pages 758-766Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201601329
Keywords
enzyme catalysis; oleate hydratase; reaction optimization; stereoselectivity; upscaling
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Funding
- European Union's Horizon 2020 Research and Innovation Programme [635536]
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The oleate hydratase from Elizabethkingia meningoseptica (Em-OAH) catalyzes the hydration of oleic acid (C18) to (R)-10-hydroxystearic acid. In previous work, low activity of Em-OAH towards chemically synthesized (Z)-undec-9-enoic acid (C11) was observed. Product formation in the hydration of the truncated C11 substrate was improved by optimizing the reaction conditions by applying statistical experiment design. Optimized reaction conditions resulted in a 2.8-fold increase in product formation in just one quarter of the time (64% conversion in 28 h). The applicability has been assessed in the upscaling of the conversion of (Z)-undec-9-enoic acid to (S)-10-hydroxyundecanoic acid (132 mg product, >95% purity). Reaction conditions developed for the hydration of C11 facilitated the first hydration of non-natural alkenes. By using a fatty acid dummy substrate, 1-decene was successfully hydrated to (S)-2-decanol with excellent stereoselectivity and 50% conversion after four days of incubation.
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