| 摘要 |
<p>The invention provides a process for the production of a condensation product selected from the group consisting of an amide and an ester of a carboxylic acid from an organic compound selected from the group consisting of organic compounds carrying a hydroxyl group and organic compounds carrying an amine group and from a concentrated medium resulting from fermentation, said medium containing a salt of said acid, said salt being selected from the group consisting of a sodium salt, a calcium salt and mixtures thereof and said medium being at a pH of at least the pKa of said acid, said process comprising reacting said medium with said organic compound and with CO2, whereby said condensation product and a salt selected from the group consisting of sodium carbonate, sodium bicarbonate, calcium carbonate, calcium bicarbonate and mixtures thereof are formed; and, separating said condensation product from the reaction mixture formed in the previous step.</p> |
