| 摘要 |
The invention relates to a process for the separation of tetrahydropyrimidine derivatives, especially 2-methyl-1,4,5,6-tetrahydropyrimidine-4-carboxylic acids (ectoines)and 2-methyl,5-hydroxyl-1,4,5,6-tetrahydropyrimidine-4-carboxylic acids (hydroxyectoines), which are present together in aqueous solutions, especially fermentation broths, by selective adsorption of one component on zeolites. |
