发明名称 |
PREPARATION OF VANILLIN FROM MICROBIAL TRANSFORMATION MEDIA BY EXTRACTION BY MEANS SUPERCRITICAL FLUIDS |
摘要 |
Crude solid vanillin-containing material is precipitated from a solution obtained by biotransformation, and purified by a process comprising contacting it with a purification fluid selected from (a) a liquefied gas whose pressure exceeds its critical pressure and whose temperature is below its critical temperature; (b) a supercritical fluid; (c) a gas. The fluid is preferably liquid carbon dioxide. The temperature is maintained below 25°. The product may be further purified by treatment with CO2 in a fluid bed drier. The crude material is preferably one precipitated from a solution resulting from biotransformation of ferulic acid. A new strain of Amycolatopsis capable of generating high concentrations of vanillin with minimal odoriferous by-products (e.g. guaiacol) is also disclosed. |
申请公布号 |
EP1611244(A1) |
申请公布日期 |
2006.01.04 |
申请号 |
EP20040724055 |
申请日期 |
2004.03.29 |
申请人 |
SAF-ISIS S.A. |
发明人 |
HEALD, STEVE;MYERS, STEVE;ROBBINS, KEITH;WALFORD, TIM;HILL, COLIN, ANTHONY |
分类号 |
A23L27/10;C12P7/24 |
主分类号 |
A23L27/10 |
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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