| 摘要 |
The present invention relates to a method for purification and/or concentration of natural cobalamins by adsorption on insoluble materials containing carboxylic groups. Especially the method comprises providing a first solution comprising at least one type of natural cobalamins, providing an adsorbent material comprising carboxylic groups capable of making specific interaction with said natural cobalamins, contacting said first solution comprising at least one type of natural cobalamins with said adsorbent material, whereby at least a part of said at least one type of natural cobalamins becomes adsorbed and/or bound to said adsorbent material, and elution of said at least one type of natural cobalamins from said adsorbent material, hereby obtaining a concentrated solution comprising at least one cobalamin. The natural cobalamins can be one or more of the natural cobalamins 5'-deoxy-5'-adenosyl-Cobalamin (adenosyl- Cbl, Ado Cbl), methyl-cobalamin (methyl-Cbl, Me Cbl) and aquo-cobalamin (aquo-Cbl, H2O Cbl). |
