Abstract: The invention relates to a method for producing salts of butyric acid, lactic acid, propionic acid, valeric acid, acetic acid, glycolic acid, sorbic acid, fumaric acid, formic acid, malic acid, tartaric acid, citric acid, derivatives of said organic acids and mixtures thereof, comprising at least the successive steps of: •i) culturing a microorganism in an appropriate culture medium comprising a carbon source and a nitrogen source, during a sufficient time to obtain a fermentation broth comprising the organic acid(s); •ii) pre-treating said fermentation broth comprising at least clarification of the fermentation broth and separation of organic acids by evaporation of the clarified fermentation broth and then condensation of the volatile fraction containing organic acids (CVAF); •v) adding inorganic bases to said CVAF •vii) eliminating the remaining water of the CVAF, and recovering the organic acid salts.

Abstract: The invention relates to a method for producing salts of butyric acid, lactic acid, propionic acid, valeric acid, acetic acid, glycolic acid, sorbic acid, fumaric acid, formic acid, malic acid, tartaric acid, citric acid, derivatives of said organic acids and mixtures thereof, comprising at least the successive steps of: ?i) culturing a microorganism in an appropriate culture medium comprising a carbon source and a nitrogen source, during a sufficient time to obtain a fermentation broth comprising the organic acid(s); ?ii) pre-treating said fermentation broth comprising at least clarification of the fermentation broth and separation of organic acids by evaporation of the clarified fermentation broth and then condensation of the volatile fraction containing organic acids (CVAF); ?v) adding inorganic C bases to said CVAF?vii) eliminating the remaining water of the CVAF, and recovering the organic acid salts.

Abstract: A method can produce L-methionine and/or a derivative of L-methionine. The method includes: culturing a microorganism for the fermentative production of L-methionine and/or a L-methionine derivative in a culture medium comprising a carbon source, a sulphur source and nitrogen source to produce L-methionine and/or a L-methionine derivative; recovering the L-methionine or L-methionine derivative obtained from the culturing; adding an alcohol solvent or acetonitrile to the L-methionine and/or the L-methionine derivative thereof containing fraction obtained from the recovering to precipitate the L-methionine and/or L-methionine derivative; and recovering L-methionine and/or L-methionine derivative.

Abstract: The present invention is related to a method for the fermentative production of glycolic acid, its derivatives or precursors, comprising the culture of an Escherichia coli strain in an appropriate culture medium comprising a carbon source, and the recovery of glycolic acid in the medium, wherein said E. coli strain is modified to improve the conversion of orotate into orotidine 5?-P. The invention is also related to the modified E. coli strain, showing an improved conversion of orotate into orotidine 5?-P, and optionally that was furthermore modified for an improved glycolic acid production.

Abstract: The present invention relates to a process of fermentation for producing glycolic acid under specific pH conditions with an increase of the pH during fermentation. The invention relates more particularly to a method for producing glycolic acid by fermentation, which comprises culturing a microorganism having glycolic acid producing ability in an appropriate culture medium with a carbon source, and under specific pH conditions with an increase of the pH during fermentation, and recovery of glycolic acid from the culture medium.