Studies of Vitamin B12 in Turnip Greens

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Abstract
The presence in turnip greens of a substance with vitamin B12 activity for chicks and for Ochromonas malhamensis was demonstrated. The possible identity of this active substance with vitamin B12 was investigated using paper electrophoresis and chromatography. By these criteria, there was no evidence that the substance in the turnip greens differed from cyanocobalamin. The fact that the vitamin B12-active material was found in turnip greens grown at one location but not in those from another raises the question of its origin. Possible sources of this vitamin B12 were discussed.