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Oregano powder reduces Streptococcus and increases SCFA concentration in a mixed bacterial culture assay

journal contribution
posted on 04.05.2020, 00:00 by Benjamin Bauer, Sheeana Gangadoo, YS Bajagai, TTH Van, RJ Moore, Dragana StanleyDragana Stanley
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Food borne illnesses have a world-wide economic impact and industries are continuously developing technologies to reduce the spread of disease caused by microorganisms. Antimicrobial growth promoters (AGPs) have been used to decrease microbiological infections in animals and their potential transfer to humans. In recent years there has been a global trend to remove AGPs from animal feed in an attempt to reduce the spread of antimicrobial resistant genes into the human population. Phytobiotics, such as oregano powder, are one of the potential replacements for AGPs due to their well-established antimicrobial components. 16S rRNA gene amplicons were used to determine the effect of oregano powder (1% w/v) on the microbiota of mixed bacterial cell cultures, which were obtained from the ceca of traditionally grown meat chickens (broilers). Oregano powder had a mild effect on the microbial cell cultures increasing Enterococcus faecium, rearranging ratios of members in the genus Lactobacillus and significantly reducing the genus Streptococcus (p = 1.6e-3). Beneficial short chain fatty acids (SCFA), acetic and butyric acid, were also significantly increased in oregano powder supplemented cultures. These results suggest that oregano powder at a concentration of 1% (w/v) may have beneficial influences on mixed microbial communities and SCFA production. © 2019 Bauer et al.

History

Volume

14

Issue

12

Start Page

1

End Page

16

Number of Pages

16

eISSN

1932-6203

Publisher

Public Library of Science

Additional Rights

CC BY 4.0

Peer Reviewed

Yes

Open Access

Yes

Acceptance Date

08/11/2019

External Author Affiliations

RMIT University

Author Research Institute

Institute for Future Farming Systems

Era Eligible

Yes

Journal

PLoS ONE