Showing papers by "Charles Rosenblum published in 1952"

The determination of the stability of vitamin B12 in multivitamin mixture by a radioactive indicator method.

Abstract: By means of cobalt 60 labeled vitamin as radioactive tracer, the stability of vitamin B12, after thirteen months' storage in four different multivitamin combinations, has been determined. The cobalt 60 labeled vitamin B12, prepared by microbial synthesis, was extracted from the multivitamin preparations by using three separate solvents, and determined by its radioactivity.