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ON THE INHIBITORY INFLUENCE OF EOSIN UPON SPORULATION

Sporulation of B. anthracis, B. subtilis, B. cereus, B. ruminatus, B. mesentericus, B. anthracoides and B. megatherium does not take place in an agar medium containing eosin "Gelb" in a concentration exceeding 0.5 per cent. In a concentration of 0.1 per cent. most of these bacteria fail to...

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Detalles Bibliográficos
Autor principal: Noguchi, Hideyo
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1908
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2124553/
https://www.ncbi.nlm.nih.gov/pubmed/19867122
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author Noguchi, Hideyo
author_facet Noguchi, Hideyo
author_sort Noguchi, Hideyo
collection PubMed
description Sporulation of B. anthracis, B. subtilis, B. cereus, B. ruminatus, B. mesentericus, B. anthracoides and B. megatherium does not take place in an agar medium containing eosin "Gelb" in a concentration exceeding 0.5 per cent. In a concentration of 0.1 per cent. most of these bacteria fail to produce spores. The greatest sensitiveness is shown by B. cereus and B. mesentericus. In a bouillon medium sporulation is likewise inhibited by eosin, but after a longer time—seven weeks or more—sporulation still occurs where the concentration of the dye equals one-tenth per cent. Sporulation of B. tetani, B. anthracis symptomaticus, B. botulismus, B. œdema maligni, B. enteritidis sporogenes, and B. putrificus does not take place in a medium containing eosin "Gelb" in concentrations exceeding 0.03 per cent. With these organisms, no difference was noted in the final effect, depending on the medium employed. No permanent loss of power to produce spores ensues with the bacteria tested even after long sojourn in the eosinized media. It may be stated that on the whole the inhibitory action of eosin was more pronounced upon the anaerobic than upon the aerobic species of bacteria employed in these experiments.
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spelling pubmed-21245532008-04-18 ON THE INHIBITORY INFLUENCE OF EOSIN UPON SPORULATION Noguchi, Hideyo J Exp Med Article Sporulation of B. anthracis, B. subtilis, B. cereus, B. ruminatus, B. mesentericus, B. anthracoides and B. megatherium does not take place in an agar medium containing eosin "Gelb" in a concentration exceeding 0.5 per cent. In a concentration of 0.1 per cent. most of these bacteria fail to produce spores. The greatest sensitiveness is shown by B. cereus and B. mesentericus. In a bouillon medium sporulation is likewise inhibited by eosin, but after a longer time—seven weeks or more—sporulation still occurs where the concentration of the dye equals one-tenth per cent. Sporulation of B. tetani, B. anthracis symptomaticus, B. botulismus, B. œdema maligni, B. enteritidis sporogenes, and B. putrificus does not take place in a medium containing eosin "Gelb" in concentrations exceeding 0.03 per cent. With these organisms, no difference was noted in the final effect, depending on the medium employed. No permanent loss of power to produce spores ensues with the bacteria tested even after long sojourn in the eosinized media. It may be stated that on the whole the inhibitory action of eosin was more pronounced upon the anaerobic than upon the aerobic species of bacteria employed in these experiments. The Rockefeller University Press 1908-01-01 /pmc/articles/PMC2124553/ /pubmed/19867122 Text en Copyright © Copyright, 1908, by The Rockefeller Institute for Medical Research New York This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Article
Noguchi, Hideyo
ON THE INHIBITORY INFLUENCE OF EOSIN UPON SPORULATION
title ON THE INHIBITORY INFLUENCE OF EOSIN UPON SPORULATION
title_full ON THE INHIBITORY INFLUENCE OF EOSIN UPON SPORULATION
title_fullStr ON THE INHIBITORY INFLUENCE OF EOSIN UPON SPORULATION
title_full_unstemmed ON THE INHIBITORY INFLUENCE OF EOSIN UPON SPORULATION
title_short ON THE INHIBITORY INFLUENCE OF EOSIN UPON SPORULATION
title_sort on the inhibitory influence of eosin upon sporulation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2124553/
https://www.ncbi.nlm.nih.gov/pubmed/19867122
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