活性炭によるビタミンB_<12>精製法の改良

概要

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In the purification of vitamin B_<12> with active carbon, the vitamin in the raw extract solution is almost completely adsorbed on active carbon, whereas the vitamin is difficult to be eluted from the carbon cake. On the assumption based on a new adsorption mechanism of active carbon, an attempt was made to improve elution of vitamin B_<12> from the carbon cake by using the active carbon pretreated as to control the strong binding power. The results showed that the spent active carbon, which had been used for adsorption and the strong power of which was occupied, still had a satistactory adsorbing power for vitamin B_<12>, and the vitamin adsorbed was comparatively easily eluted with 50-60% acetone used in the past. Furthermore, the repeated use of the spent active carbon promoted elution of vitamin B_<12> from the carbon cake and improved the purity of the vitamin in the eluate, although it lowered the adsorbing power.
日本ビタミン学会の論文
1961-11-25