Hydrogen-yielding fermentation conducted in bioreactors is an alternative method of hydrogen production.
More...Hydrogen-yielding fermentation conducted in bioreactors is an alternative method of hydrogen production. However, unfavourable processes can seriously inhibit bio-hydrogen generation during the acidogenic step of anaerobic digestion. Here, ascomycetous yeasts were identified as a major factor inhibiting the production of bio-hydrogen by fermentation. Changes in the performance of hydrogen-producing bioreactors including metabolic shift, quantitative changes in the fermentation products, decreased pH, instability of the microbial community and consequently a dramatic drop in bio-hydrogen yield were observed following yeast infection. Ascomycetous yeasts from the genera Candida, Kazachstania and Geotrichum were isolated from hydrogen-producing bioreactors. Yeast metabolites secreted into the growth medium showed antibacterial activity. Our studies indicate that yeast infection of hydrogen-producing microbial communities is one of the serious obstacles to use dark fermentation as an alternative method of bio-hydrogen production. It also explains why studies on hydrogen fermentation are still limited to the laboratory or pilot-scale systems. The genome of the selected isolate Kazachstania humilis MAW1 was sequenced.
Less...| Accession | PRJNA785806 |
| Data Type | Genome sequencing and assembly |
| Scope | Monoisolate |
| Organism | Maudiozyma humilis[Taxonomy ID: 51915] Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; Saccharomycetales; Saccharomycetaceae; Maudiozyma; Maudiozyma humilis |
| Publications | - Published online: Detman A et al., "Inhibition of hydrogen-yielding dark fermentation by ascomycetous yeasts", International Journal of Hydrogen Energy, 2018;43(24):10967-10979
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| Grants | - "Innovative installation for microbial hydrogen and methane production based on anaerobic digestion of bio-waste and by-products of the sugar industry, including ways of use of the obtained gaseous biofuels and ensuring energy selfsufficiency of waste-water treatment plant in a sugar factory" (Grant ID BIOSTRATEG2/297310/13/NCBiR/2016, The National Centre for Research and Development)
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| Submission | Registration date: 3-Dec-2021
Institute of Biochemistry and Biophysics PAS |
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| BioSample | 2 |
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