Abstract
THE chief problems in the accurate analysis of vitamin D in natural products by physico-chemical methods are: (a) the elimination of large quantities of interfering sterols, vitamin A and other carotenoids; (b) the need to measure minute amounts of vitamin D by a reproducible and specific technique.
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OSIYEMI, F. Use of Sudan Black as an Indicator of Vitamin D on Thin-layer Chromatograms. Nature 211, 1192–1193 (1966). https://doi.org/10.1038/2111192b0
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DOI: https://doi.org/10.1038/2111192b0
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