Kinetic resolution of sec-alcohols catalysed by Candida antarctica lipase B displaying Pichia pastoris whole-cell biocatalyst
[Display omitted] •Pp-CALB showed great activity and enantioselectivity to sec-alcohols.•The reuse experiments showed that Pp-CALB had a good operating stability.•Pp-CALB was a convincing biocatalyst using in solvent-free system.•Pp-CALB has similar enantioselective characteristics with Novozyme 435...
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Veröffentlicht in: | Enzyme and microbial technology 2018-03, Vol.110, p.8-13 |
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Format: | Artikel |
Sprache: | eng |
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•Pp-CALB showed great activity and enantioselectivity to sec-alcohols.•The reuse experiments showed that Pp-CALB had a good operating stability.•Pp-CALB was a convincing biocatalyst using in solvent-free system.•Pp-CALB has similar enantioselective characteristics with Novozyme 435.
Kinetic resolution of sec-alcohols is a green process with biocatalyst. Candida antarctica lipase B (CALB) displayed on Pichia pastoris cell-surface (Pp-CALB) was characterized in kinetic resolution of sec-alcohols with different structures. The reaction parameters including acyl donors, molar ratio of substrates, solvents and temperatures were examined with 2-octanol as model substrate. 47.4% molar conversion of 2-octanol and 99.7% eep were obtained after a 5h reaction with Pp-CALB, and 90% of its original activity still remained after being reused for 10 cycles. Pp-CALB was then used to several sec-alcohols and it showed great enzymatic activity and enantioselectivity to all tested sec-alcohols, more than 93.1% of eep. The enantioselective characteristics of Pp-CALB catalysed sec-alcohols with different structures were compared with Novozyme 435 which was almost the same. Solvent free system as one way of green chemistry was applied to Pp-CALB and Pp-CALB showed great catalytic activity and enantioselectivity. Pp-CALB was potential biocatalyst of high enzymatic activity and enantioselectivity using in resolution of sec-alcohols. |
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ISSN: | 0141-0229 1879-0909 |
DOI: | 10.1016/j.enzmictec.2017.11.005 |