The Journal of General and Applied Microbiology
Online ISSN : 1349-8037
Print ISSN : 0022-1260
ISSN-L : 0022-1260
Short Communications
New insights into microorganism-derived antibiotics based on identification and antimicrobial activity of antibiotic-producing actinomycetes in kusaya gravy that lead to its high preservability
Sachiko MasakiSakura NogimuraTakahiro OsadaKosuke KitaMio TaguchiKana ShinodaRyosuke UnnoMorio IshikawaToshihiro Suzuki
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JOURNAL OPEN ACCESS
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2024 Volume 70 Issue 3 Article ID: 2024.07.001

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Abstract

Kusaya shows a high preservability due to the microorganism-derived antibiotics contained in kusaya gravy, which is important for kusaya manufacturing. However, the antimicrobial compounds and its producing bacteria, as well as the antimicrobial activity of the kusaya gravy itself, have remained unknown. In this study, we isolated antibiotic-producing bacteria of the genus Streptomyces from kusaya gravy from Hachijojima and found that they produced antibacterial substances against various fungi and bacteria. In addition, we demonstrated that kusaya gravy itself shows antimicrobial activity, which was consistent with that of the isolates. This is the first report to directly indicate that kusaya gravy contains microorganism-derived antibiotics, which are assumed to be produced by actinomycetes.

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© 2024 Applied Microbiology, Molecular and Cellular Biosciences Research Foundation

This article is licensed under a Creative Commons [Attribution-NonCommercial-NoDerivatives 4.0 International] license.
https://creativecommons.org/licenses/by-nc-nd/4.0/
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