Process for the recovery of .alpha.-hydroxy- and .alpha.-amino-carboxylic acids from sugar-containing media
AssigneeRoquette Freres
InventorsFrancis Devos, Michel Huchette
Life of this patent
Estimating the term…
Abstract
The invention relates to a process for the recovery of .alpha.-hydroxy- and .alpha.-amino-carboxylic acids from sugary media containing them. According to the process of the invention: in a first phase, the mixture from which it is proposed to recover the .alpha.-hydroxy- or .alpha.-amino-carboxylic acid and which contains the latter in the form of its calcium salt is contacted with a cationic resin in the calcium form for a sufficient time to reach optimal adsorption of said calcium salt and then, in a second phase, the previously saturated resin is eluted by resorting to water. The process according to the invention enables the quantitative production of a pure calcium salt.
Claims13
Process for recovering .alpha.-hydroxy- and .alpha.-amino-carboxylic acids in the form of their calcium salts from sugary media containing them, wherein:
- in the first step, said sugary media containing an .alpha.-hydroxy- or .alpha.-amino-carboxylic acid in the form of its calcium salt is contacted with a cationic resin in the calcium form for a sufficient time to achieve an optimal adsorption of said calcium salt and then,
- in a second step, the previously saturated resin is eluted by water to provide first fractions enriched in sugar and then latter fractions enriched essentially in an .alpha.-hydroxy- or .alpha.-aminocarboxylic acid in the form of its calcium salt, recovering thus the said acid in the form of its calcium salt.
Dependencies are inferred from the claim text.