Secondary Metabolite Screening of Marine Bacteria Roseivirga sp. PAP.19 and Sinomicrobium sp. PAP.21 as an Antimicrobial using the One Strain Many Compounds (OSMAC) Approach

Keywords: Antimicrobials, Co-culture, Roseivirga sp. PAP.19, Sinomicrobium sp. PAP.21, OSMAC Approach

Abstract

One of the most promising sources for the discovery and development of new antibiotics is marine microorganisms from the phylum Bacteroidetes. However, the output of exploration campaigns exploiting the Bacteroidetes phylum still needs to be improved. Co-culture represents an approach for discovering new metabolites that increases metabolite diversity and avoids the rediscovery of known metabolites. This research aims to determine the antimicrobial potential of the extracts derived from the co-culture of the bacteria Roseivirga sp. PAP.19 and Sinomicrobium sp. PAP.21. In this study, Roseivirga sp. PAP.19 and Sinomicrobium sp. PAP.21 were co-cultured under different culture conditions, following the principle of the One Strain Many Compounds (OSMAC) approach, to enhance metabolite diversity. The resulting extracts were analysed in a time-based fashion by molecular networking of the LC-HRMS profile. The OSMAC principle was applied to activate the production of secondary metabolite biosynthetic gene clusters (BGCs) and thereby hopefully trigger the production of new antimicrobial compounds. Extracts of the co-culture produced various secondary metabolites. In our study, we detected surfactin C13 (m/z 1008.65 [M+H]), surfactin C14 (m/z 1022.67 [M+H]), and surfactin C15 (m/z 1036.69 [M+H]+). These metabolites are known to possess antimicrobial activity with potential applications against pathogenic bacteria.

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Published
2026-05-04
How to Cite
Harfiyani, A. D., Riyanti, Meinita, M. D. N., Riviani, R., Harwoko , H. and Mettal, U. (2026) “Secondary Metabolite Screening of Marine Bacteria Roseivirga sp. PAP.19 and Sinomicrobium sp. PAP.21 as an Antimicrobial using the One Strain Many Compounds (OSMAC) Approach”, Journal of Tropical Biodiversity and Biotechnology, 11(2), p. jtbb22572. doi: 10.22146/jtbb.22572.
Section
Research Articles