Analysis of Fat-Soluble Vitamins. XVI. Antirachitic Activity of 5,6-trans-Vitamin D3 Alone and in the Presence of 5,6-cis-Vitamin D3 Resin, Using Chick Bioassays
- 1 September 1977
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of AOAC INTERNATIONAL
- Vol. 60 (5) , 1003-1009
- https://doi.org/10.1093/jaoac/60.5.1003
Abstract
Two biological assays were conducted in which the antirachitic activity in chicks of 5,6-trans-vitamin D3 added to feed is compared with that of 5,6-cis-vitamin D3. On the basis of the results obtained it is concluded that the relative potency of the trans isomer is, at the most, 5% and that the antirachitic activity of the trans isomer is not markedly enhanced (an increase to a relative potency of 16%, at the most) if the cis isomer is also included in the diet. The results are not conclusive on the inhibition or lack of inhibition of the antirachitic activity of 5,6-cis-vitamin D3 by the presence of 5,6-trans-vitamin D3 in the feed.This publication has 0 references indexed in Scilit: