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The Para-dimethyl-amido-benzaldehyde Test for Indole1

Published online by Cambridge University Press:  15 May 2009

William E. Marshall
William E. Marshall
Affiliation:
Assistant Bacteriologist, Lister Institute of Preventive Medicine.
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1. The high estimate formed by Böhme of the utility of this test has been fully confirmed.

2. Other substances, such as skatole-carboxylic acid, which tended to confuse the results of the older method, do not give an indole-like reaction with this reagent.

3. The test is more delicate, and the time required to ascertain the presence of indole is shortened.

4. The method lends itself to accurate colorimetric quantitative estimations, and the amount of indole present at various stages during the cultivation of certain organisms has been determined.

Type
Research Article
Information
Journal of Hygiene , Volume 7 , Issue 4 , July 1907 , pp. 581 - 588
Copyright
Copyright © Cambridge University Press 1907

References

REFERENCES

Böhme, , (1905), “Die Anwendung der Ehrlichsen Indolreaktion für bakteriologische Zwecke.” Centralbl. f. Bakteriol. Bd. XL. p. 129.Google Scholar
Ehrlich, , (1901), “Ueber die Dimethyl-amido-benzaldehyd Reaction.” Med. Woch. No. 15 (Reprint).Google Scholar
Herter, and Foster, , (1906), “A method for the quantitative determination of indol.” Journ. of Biological Chemistry, vol. I. p. 257.Google Scholar
Peckham, , (1897), “The influence of environment upon the biological processes of the various members of the colon group of bacilli.” Journ. Exper. Med. vol. II. p. 449.Google Scholar