发明名称 |
Process for producing gamma-lactones. |
摘要 |
The invention provides a process for producing gamma-lactones useful for incorporation in flavourings and fragrances, wherein a micro-organism which is acceptable for making food grade products and which does not metabolize gamma-lactones, is cultured aerobically in a culture medium containing as the substrate a hydroxy fatty acid having an even number 4 of carbon atoms between the carboxyl group and the carbon atom carrying the hydroxy group. The preferred micro-organism is a Saccharomyces cerevisiae, Debaromyces hansenii or Candida boidinii species. The gamma-hydroxy-alkanoic acid reaction product of the process is lactonized either in the fermentation broth or after separation therefrom. Especially suitable are 12-hydroxy fatty acids such as ricinoleic acid. The hydroxy fatty acid may be added either pure or as the mixture obtained by hydrolysis of an ester thereof. Enzymatic hydrolysis of such ester may be done in situ in the fermentation broth. |
申请公布号 |
EP0371568(A1) |
申请公布日期 |
1990.06.06 |
申请号 |
EP19890203041 |
申请日期 |
1989.11.29 |
申请人 |
UNILEVER N.V.;UNILEVER PLC |
发明人 |
BOOG, ARNOLDUS LOUIS GERARDUS MARIA;VAN GRINSVEN, ADRIANUS MARTINUS;PETERS, ALFONS LODEWIJK JOZEF;ROOS, ROBERT;WIEG, ANDRAS JANOS |
分类号 |
A23L27/20;C12P7/42;C12P17/04;C12R1/645;C12R1/72;C12R1/865 |
主分类号 |
A23L27/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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