Abstract
THE chemist has been attracted to the investigation of natural and artificial colouring matters for a variety of reasons, including not only colour-pleasure, the incentive of the knowledge that chlorophyll and haemoglobin perform some of the most important functions in vital processes, and the industrial importance of dye-stuffs and pigments, but also on account of the fact that visible colour more than any other property facilitates the experimental study of organic substances whether by analysis or synthesis. It furnishes a standard of homogeneity or a measure of concentration, it is an invaluable guide in the search for methods of separation and purification, and it at once indicates, by its appearance or disappearance, the occurrence of a chemical reaction. Small wonder that the successful outcome of the investigation of many colourless substances has awaited the discovery of some characteristic colour-reaction; a noteworthy example being vitamin A.
Article PDF
Rights and permissions
About this article
Cite this article
ROBINSON, R. Natural Colouring Matters and their Analogues. Nature 132, 625–628 (1933). https://doi.org/10.1038/132625a0
Issue Date:
DOI: https://doi.org/10.1038/132625a0
This article is cited by
-
Gaschromatographische Bestimmung der Inhaltsstoffe von G�rungsgetr�nken
Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung (1976)
-
Untersuchungen über die Verteilung und Vererbung von Anthocyan in Den Blättern von Begonien
Planta (1957)
-
�ber die Eignung zelleigener Anthocyane zur pH-Wert-Bestimmung des Zellsaftes
Protoplasma (1955)
-
The anthocyanin pigments of plants
The Botanical Review (1947)
-
A biochemical survey of some mendelian factors for flower colour
Journal of Genetics (1936)