Darstellung von Vitamin B2-Konzentraten.

Abstract
The adsorption method which is least complicated and gives good concentrates is described in detail. In animals and in plants a parallelism was found between the distribution of B2 and of the watersoluble, yellow-green fluorescent pigment, flavin. Adsorption of the flavin on Fullers earth in neutral soln. and elution with pyridin gave a yellow fluorescent soln. but without B2 activity.

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