Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound
Reexamination Certificate
2011-07-19
2011-07-19
Marx, Irene (Department: 1651)
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing oxygen-containing organic compound
C435S252100
Reexamination Certificate
active
07981646
ABSTRACT:
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 CO2in a fluid bed drier. The crude material is preferably one precipitated from a solution resulting from biotransformation of ferulic acid. A new strain ofAmycolatopsiscapable of generating high concentrations of vanillin with minimal odoriferous by-products (e.g. guaiacol) is also disclosed.
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Heald Steve
Hill Colin
Myers Steve
Robbins Keith
Walford Tim
Marx Irene
SAF-ISIS
Young & Thompson
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