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Ethanoligenens harbinense is a hydrogen-producing, fermenting bacterium that shows potential for bioenergy-related applications, including biofuel production from waste streams.

Species description

It is Gram-positive, non-spore-forming, mesophilic and motile, its cells being regular rods (0.4–0.8×1.5–8.0 μm). Its type strain is YUAN-3 (=JCM 12961 =CGMCC 1.5033).

Ethanoligenens harbinense was named by Xing and co-authors in the original discovery paper, which reported that the bacterial strains had been isolated from molasses sludge wastewater. Ethanoligenens means 'ethanol-producing', and comes from 'ethanol' and the Latin verb 'genere', to produce; harbinense is a reference to Harbin, the city in China where the type strain was isolated.

Ethanoligenens harbinense metabolizes glucose and carbon sources to produce hydrogen, acetic acid, carbon dioxide, and ethanol. This metabolism is catalyzed by pyruvate ferradoxin oxidoreductase and genes encoding -hydrogenase. -hydrogenase has a specific role in the hydrogen gas production in Ethanoligenens harbinense. Since Ethanoligenens harbinense is a high hydrogen gas producing bacterium, it is often used as a model organism to study -hydrogenase activity.

Ethanoligenens harbinense has the ability to produce bio-hydrogen through its metabolism, which can be used for sustainable energy technology. This has been shown to be feasible for affordable bio-hydrogen production by the use of bioreactors. The mechanisms that give Ethanoligenens harbinense the ability to produce bio-hydrogen by fermenting organic wastes, including wastewater, allows this bacteria to be crucial for biofuel and bioenergy production.

References

1. Parte AC. "Ethanoligenens". LPSN.
2. ^ Li H, Mei X, Liu B, Xie G, Ren N, Xing D (2019-06-28). "Quantitative proteomic analysis reveals the ethanologenic metabolism regulation of Ethanoligenens harbinense by exogenous ethanol addition". Biotechnology for Biofuels. 12 (1): 166. Bibcode:2019BB.....12..166L. doi:10.1186/s13068-019-1511-y. PMC 6598285. PMID 31297154.
3. ^ Xing D, Ren N, Li Q, Lin M, Wang A, Zhao L (April 2006). "Ethanoligenens harbinense gen. nov., sp. nov., isolated from molasses wastewater". International Journal of Systematic and Evolutionary Microbiology. 56 (Pt 4): 755–760. doi:10.1099/ijs.0.63926-0. PMID 16585689.
4. ^ Li Z, Liu B, Cui H, Ding J, Li H, Xie G, et al. (October 2019). "The complete genome sequence of Ethanoligenens harbinense reveals the metabolic pathway of acetate-ethanol fermentation: A novel understanding of the principles of anaerobic biotechnology". Environment International. 131: 105053. Bibcode:2019EnInt.13105053L. doi:10.1016/j.envint.2019.105053. PMID 31357089.
5. ^ Zhang L, Chung J, Ren N, Sun R (June 2015). "Effects of the ecological factors on hydrogen production and -hydrogenase activity in Ethanoligenens harbinense YUAN-3". International Journal of Hydrogen Energy. 40 (21): 6792–6797. Bibcode:2015IJHE...40.6792Z. doi:10.1016/j.ijhydene.2015.02.015.
6. Li W, Cheng C, Cao G, Yang ST, Ren N (2019-11-10). "Potential of hydrogen production from sugarcane juice by Ethanoligenens harbinense Yuan-3". Journal of Cleaner Production. 237: 117552. Bibcode:2019JCPro.23717552L. doi:10.1016/j.jclepro.2019.07.027.
7. Jiang J, Guo T, Wang J, Sun A, Chen X, Xu X, et al. (June 2024). "A novel microbial community restructuring strategy for enhanced hydrogen production using multiple pretreatments and CSTR operation". Environmental Research. 251 (Pt 2): 118725. doi:10.1016/j.envres.2024.118725. PMID 38518915.
8. Sanghvi AH, Manjoo A, Rajput P, Mahajan N, Rajamohan N, Abrar I (2024). "Advancements in biohydrogen production – a comprehensive review of technologies, lifecycle analysis, and future scope". RSC Advances. 14 (49): 36868–36885. doi:10.1039/D4RA06214K. PMC 11572884. PMID 39559569.

Further reading

• Xu L, Ren N, Wang X, Jia Y (December 2008). "Biohydrogen production by Ethanoligenens harbinense B49: Nutrient optimization". International Journal of Hydrogen Energy. 33 (23): 6962–6967. Bibcode:2008IJHE...33.6962X. doi:10.1016/j.ijhydene.2008.09.005.

External links

• LPSN
• "Ethanoligenens harbinense". The Encyclopedia of Life.
• Type strain of Ethanoligenens harbinense at BacDive - the Bacterial Diversity Metadatabase

• Eubacteriales
• Bacteria described in 2006