Vitamin B1 in vertebrate muscle

Abstract

The muscles of the pig contained more vit. B1 (thiochrome method) than those of any other spp. examined. The amt. in the muscles of individual pigs was affected by their nutritional history, but that in the psoas was consistently greater than that in longissimus dorsi. In heart muscle of pig and horse auricular tissue was richer in vit. B1 than ventricular. In the rabbit, red muscle appeared to contain more than white muscle. An inverse relationship between the vit. B1 and the glycogen level of muscles would be in harmony with these results. A proportion of the cocarboxylase found in pig psoas muscle immediately after death rapidly breaks down if the tissue is allowed to stand at room temp.