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Polyphasic Characterization of Acetobacter indonesiensis UNPADCC 01-5 Isolated From a Traditional Fermented Food,
Yolani Syaputri1,2, Erisa Zahra1, Rianti Nur Azzahra1
1Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor, West Java, Indonesia.
Acetobacter indonesiensis UNPADCC 01-5, a novel acetic acid bacterium from oncom merah, demonstrates resilience and potential for industrial applications. Comprehensive analysis confirms its safety and suitability for biofunctional roles.
Area of Science:
- Microbiology
- Bacteriology
- Genomics
Background:
- Acetobacter indonesiensis UNPADCC 01-5 is a newly identified acetic acid bacterium from fermented food.
- Limited polyphasic classification data exists for this strain.
Purpose of the Study:
- To conduct the first comprehensive characterization of A. indonesiensis UNPADCC 01-5.
- To evaluate its potential as a functional or biofunctional agent.
Main Methods:
- Morphological, physiological, and biochemical characterization.
- Antibiotic susceptibility testing (Kirby-Bauer).
- Gas chromatography-mass spectrometry and whole-genome sequencing (WGS).
Main Results:
- A. indonesiensis UNPADCC 01-5 is a non-motile, gram-negative rod, acid-, salt-, and heat-tolerant, resistant to chloramphenicol.
- Ferments glucose, rhamnose, melibiose, arabinose; produces acetoin and acetic acid.
- WGS revealed genes for acetic acid production, stress tolerance, nitrogen fixation, hydrocarbon degradation, heavy-metal resistance; no human virulence factors detected.
Conclusions:
- A. indonesiensis UNPADCC 01-5 possesses adaptive traits suitable for industrial applications.
- Potential as a functional/adjunct culture for acidic fermentations and a biofunctional agent.
- Further industrial-scale testing is recommended.
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