Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Neurospora intermedia pellets for enhanced ethanol and fungal biomass production from wheat straw
University of Borås, Faculty of Textiles, Engineering and Business. Swedish Centre for Resource Recovery. (Biotechnology)ORCID iD: 0000-0001-5719-7252
University of Borås, Faculty of Textiles, Engineering and Business. Swedish Centre for Resource Recovery. (Biotechnology)
University of Borås, Faculty of Textiles, Engineering and Business. Swedish Centre for Resource Recovery. (Biotechnology)ORCID iD: 0000-0003-3418-1762
University of Borås, Faculty of Textiles, Engineering and Business. Swedish Centre for Resource Recovery. (Biotechnology)ORCID iD: 0000-0003-4887-2433
2017 (English)In: Proceedings of 39th Symposium on Biotechnology for Fuels and Chemicals, 2017Conference paper, Poster (with or without abstract) (Refereed)
Sustainable development
The content falls within the scope of Sustainable Development
Abstract [en]

Recent studies at our research group have described an ‘integrated-biorefinery’ model for the existing 1st generation wheat-based ethanol facilities, by using edible filamentous fungus, Neurospora intermedia. The process focuses on the production of 2nd generation ethanol together with fungal biomass (for animal or aquaculture feed applications) from wheat straw. A final ethanol yield of 94% (theoretical maximum based on substrate glucan content) was obtained with N. intermedia fermentation in dilute phosphoric acid pretreated (0.7%w/v acid, 7min at 201±4°C) and enzymatically hydrolyzed (10FPU cellulase/g substrate) straw. Fungal cultivation in liquid straw hydrolysate resulted in a maximum of 3.71±0.11g/L dry fungal biomass. Considering the industrial significance of the fungal process, attempts were made to manipulate N. intermedia to grow as pellet forms in the straw hydrolysate, for the first time. Of the various culture conditions screened, stable pellet morphology was obtained at pH 3.0 to 5.5, resulting in uniform pellets with size ranging from 2.5 to 4.25mm. Fermentation using N. intermedia pellets in the liquid straw hydrolysate, resulted in about 31% increase in the ethanol yield, with an improved glucose assimilation by the pellets (82% reduction) as opposed to filamentous forms (51% reduction), at similar culture conditions. The growth of fungal pellets in presence of inhibitors (at different concentrations of acetic acid and furfural) resulted in about 11% to 45% increase in ethanol production as compared to filamentous forms, at similar growth conditions in the liquid straw hydrolysate. Detailed results on N. intermedia pelletization in liquid straw hydrolysate will be discussed in this presentation.

Place, publisher, year, edition, pages
2017.
Keyword [en]
Neurospora intermedia, Fungal pellets, wheat straw, Bioethanol, Edible filamentous fungi
National Category
Chemical Process Engineering Bioprocess Technology Bioenergy
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-12921OAI: oai:DiVA.org:hb-12921DiVA: diva2:1152623
Conference
39th Symposium on Biotechnology for Fuels and Chemicals, San Francisco, USA, 1-4 May, 2017
Available from: 2017-10-25 Created: 2017-10-25 Last updated: 2017-11-10

Open Access in DiVA

No full text

Other links

https://sim.confex.com/sim/39th/meetingapp.cgi/Paper/33242

Search in DiVA

By author/editor
Nair, Ramkumar BLennartsson, PatrikTaherzadeh, Mohammad
By organisation
Faculty of Textiles, Engineering and Business
Chemical Process EngineeringBioprocess TechnologyBioenergy

Search outside of DiVA

GoogleGoogle Scholar

Total: 36 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf