Description

• Title:
  Inhibition of hydrogen-yielding dark fermentation by ascomycetous yeasts
• Creator:
  Detman, Anna;
  Chojnacka, Aleksandra;
  Mielecki, Damian;
  Błaszczyk, Mieczysław;
  Sikora, Anna
• Description:
  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 microbialcommunity 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.
• Object availability:
  free access
• Date:
  2018
• Type:
  Article;
  PeerReviewed
• Language:
  English;
  eng
• Format:
  application/pdf
• Publisher:
  Elsevier
• Relation: http://eprints.ibb.waw.pl/1581 ;https://www.sciencedirect.com/science/article/pii/S0360319918314587
• Subject:
  QR Microbiology
• Identifier: http://eprints.ibb.waw.pl/1581/1/1-s2.0-S0360319918314587-main.pdf ;
  Detman, Anna and Chojnacka, Aleksandra and Mielecki, Damian and Błaszczyk, Mieczysław and Sikora, Anna (2018) Inhibition of hydrogen-yielding dark fermentation by ascomycetous yeasts. International Journal of Hydrogen Energy, 43 (24). pp. 10967-10979.
• Data provider:
  Repozytorium Instytutu Biochemii i Biofizyki Polskiej Akademii Nauk
• Can I use it?:
  seek permission
• Type:
  other