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Distribution of Vitamin B12 in Natural Materials.
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1949
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Vitamin NutritionNutritionFood ChemistryNutrient BioavailabilityNutrient PhysiologyAnimal NutritionPhysiologyPharmacologyVitamin B12Feed AdditiveRat AssayAnalytical ChemistryVitamin B12 ContentVitamin B ComplexPublic HealthMetabolismMicronutrientsHealth Sciences
The vitamin B12 content of a number of natural materials as determined by the rat assay is presented. Fish solubles, streptomycin “slops”, sheep rumen contents and glandular meats are excellent sources of vitamin B12. Muscle tissue, eggs and milk products contain lesser amounts, whereas plant materials show no measurable activity.