Determination of vitamin A with the Hilger vitameter equipped with a device for photographic recording
- 1 May 1935
- journal article
- research article
- Published by Portland Press Ltd. in Biochemical Journal
- Vol. 29 (5), 1227-1235
- https://doi.org/10.1042/bj0291227
Abstract
The reliability of the accurate readings obtained by the Hilger Vitameter A (described) is demonstrated by comparison with spectrographical detns, and SbCl3 blue values (calculated by a new formula). Values are given for medicinal and crude cod-liver oils, other liver and fish oils, and concentrates of these. Concentrates of medicinal cod-liver oils gave 85-90% of the absorption values of the oils. In absorbing substances the absorption presumably due to vit. A may be removed by exposure to strong light.This publication has 3 references indexed in Scilit:
- Determination of vitamin A in oils by a spectrophotometric method.1933
- Variations in the quality of butter, particularly in relation to the vitamin A, carotene and xanthophyll content as influenced by feeding artificially dried grass to stall-fed cattleBiochemical Journal, 1933
- The determination of vitamin A in cod-liver oils, (a) biologically, (b) chemically, (c) physically, with a statistical examination of the resultsBiochemical Journal, 1932