Líffræðifélag Íslands - biologia.is
Líffræðiráðstefnan 2025
Erindi/veggspjald / Talk/poster V26
Höfundar / Authors: Ingunn Ósk Grétarsdóttir (1), Eva María Ingvadóttir (2), Sean Michael Scully (2)
Starfsvettvangur / Affiliations: 1. Háskóli Íslands, 2. Háskólinn á Akureyri
Kynnir / Presenter: Ingunn Ósk Grétarsdóttir
Thermophilic anaerobes within the genus Thermoanaerobacter are known ethanol and hydrogen producers and have additionally been investigated for their ability to reduce carboxylic acids to their corresponding alcohols. Work to date has not yet revealed the underlying metabolic pathways responsible. Here, the carboxylic acid substrate spectra of three strains (T. uzonensis strain J1, T. uzonensis strain JW/IW010, T. pseudoethanolicus strain 39E) were mapped along with their ability to use mannitol as a source of reducing potential. Furthermore, carboxylic acid rich anaerobic digestates (AD) of Laminaria, Ascophyllum nodosum, fish and lupine meal were prepared by using aqaculture waste as starting inoculum and subsequently reduced by the aforementioned strains. As carboxylic acids are found in many waste-streams, including aquaculture waste available in abundance in Iceland, this bioconversion includes both a waste valorization opportunity as well as a more green and sustainable way of producing industrially relevant solvents.