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141. A Pigment-producing Organism (Pseudomonas sp.) Isolated From Discoloured Butter

Published online by Cambridge University Press:  01 June 2009

E. R. Hiscox
E. R. Hiscox
Affiliation:
National Institute for Research in Dairying (University of Reading)
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Extract

An organism, isolated from discoloured areas in butter and capable of reproducing the colour in artificial culture, is described.

A brown colour, which may probably be attributed to the action of ammonia produced by this organism, diffused through the medium.

A blue-black insoluble pigment, produced only at low temperatures, was concentrated in and around the bacterial cells. The nature of the source of nitrogen influenced the development of this pigment, proteose appearing to be inhibitory.

NaCl in moderate concentration was usually necessary for growth.

Type
Original Articles
Information
Journal of Dairy Research , Volume 7 , Issue 3 , September 1936 , pp. 238 - 243
Copyright
Copyright © Proprietors of Journal of Dairy Research 1936

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References

REFERENCES

(1) Claessen, (1890), Zbl. Bakt. 7, 13.Google Scholar
(2) Voges, (1893), Zbl. Bakt. 14, 301.Google Scholar
(3) Moalpine, &Brigham, (1928), J. Bact. 16, 251.CrossRefGoogle Scholar