Process for the production of 6-hydroxynicotinic acid
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United States of America Patent
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Sep 29, 1992
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app pub date -
May 24, 1991
filing date -
Dec 20, 1989
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Abstract
A process for the production of 6-hydroxynicotinic acid from nicotinic acid by means of enzymatic hydroxylation in the presence of microorganisms of the genera Pseudomonas, Bacillus or Achromobacter. By maintaining a specific concentration range during the addition of nicotinic acid, the biomass formation can take place in the same process step as the product formation, without product losses occurring by further decomposition.
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