The Histochemical Journal

, Volume 4, Issue 5, pp 391–399

Impurities and staining characteristics of Alcian Blue samples

Authors

  • R. W. Horobin
    • Department of Human Biology and AnatomyUniversity of Sheffield
  • D. J. Goldstein
    • Department of Human Biology and AnatomyUniversity of Sheffield
Papers

DOI: 10.1007/BF01012530

Cite this article as:
Horobin, R.W. & Goldstein, D.J. Histochem J (1972) 4: 391. doi:10.1007/BF01012530

Synopsis

The composition of various samples of Alcian Blue* and related dyes was studied, using t.l.c. (with cellulose as adsorbent andn-butanol: acetic acid: water as developing solvent), solvent extraction and precipitation, i.r. spectroscopy and classical semimicro analysis. All the Alcian Blue samples appeared to contain the same coloured components. The Alcian Green samples were mixtures of these blue components and Alcian Yellow. All the Astra Blue samples examined were composed of the same blue constituents. Colourless components identified were boricacid, dextrin and sulphate and sometimes amounted to nearly three-quarters by weight of the crude dyes. Impurities had only a slight effect on staining with Alcian Blue in aqueous acetic acid but appreciably affected staining by the critical electrolyte concentration (C.E.C.) procedure. Dextrin as impurity raised C.E.C. limits while the inorganic salt impurities raised the C.E.C. values of some substrates and lowered those of others.

Copyright information

© Chapman and Hall Ltd 1972