CN1313402A - Process for preparing D-lactone valerate by microbe enzyme method - Google Patents
Process for preparing D-lactone valerate by microbe enzyme method Download PDFInfo
- Publication number
- CN1313402A CN1313402A CN 01104070 CN01104070A CN1313402A CN 1313402 A CN1313402 A CN 1313402A CN 01104070 CN01104070 CN 01104070 CN 01104070 A CN01104070 A CN 01104070A CN 1313402 A CN1313402 A CN 1313402A
- Authority
- CN
- China
- Prior art keywords
- enzyme
- lactone
- pantoyl lactone
- substrate
- pantoyl
- Prior art date
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- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
Incubation time d | Thalline weight in wet base g/L | Dry cell weight g/L | Enzyme U/g (dry mycelium) alive |
????1 ????2 ????3 ????4 ????5 ????6 | ????10.385 ????86.125 ????174.41 ???105.135 ????77.28 ????97.225 | ????0.46 ????6.005 ????9.795 ????11.85 ????13.92 ????14.785 | ??????0 ????0.44 ????1.62 ????1.22 ????1.20 ????1.27 |
Transform number of times | ??1 | ??2 | ??3 | ??4 | ??5 | ??6 |
Transformation efficiency (%) | ?30.5 | ?31.1 | ?29.3 | ?28.6 | ?29.3 | ?29.6 |
Transform number of times | ??1 | ??2 | ??3 | ??4 | ??5 | ??6 | ??7 | ??8 | ??9 | ??10 |
Transformation efficiency (%) | ?28.5 | ?30.1 | ?32.2 | ?30.5 | ?29.3 | ?29.6 | ?30.5 | ?31.2 | ?28.6 | ?31.5 |
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US6720302B2 (en) * | 1999-07-22 | 2004-04-13 | Firmenich Sa | Method for preparing a γ-unsaturated β-lactone and use thereof as an aromatic and flavouring ingredient |
CN100351369C (en) * | 2005-11-22 | 2007-11-28 | 浙江杭州鑫富药业股份有限公司 | Microorganism of producing D-pantothenic acid enternal ester hydrolase and process for preparing D-pantothenic acid thereof |
WO2008046328A1 (en) * | 2006-10-19 | 2008-04-24 | East China University Of Science And Technology | A levorotatory lactonohydrolase producing strain and its use for producing chiral oxyacid |
CN108117532A (en) * | 2018-01-12 | 2018-06-05 | 重庆市碚圣医药科技股份有限公司 | A kind of synthetic method of the D-VB5 lactone of high-purity |
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CN112481345A (en) * | 2020-12-18 | 2021-03-12 | 合肥工业大学 | Method for preparing D-pantoic acid by continuous catalysis |
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