SwePub
Sök i LIBRIS databas

  Utökad sökning

id:"swepub:oai:DiVA.org:oru-52202"
 

Sökning: id:"swepub:oai:DiVA.org:oru-52202" > Fermentation of lig...

Fermentation of lignocellulosic hydrolysate by the alternative industrial ethanol yeast Dekkera bruxellensis

Blomqvist, Johanna (författare)
Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mikrobiologi,Department of Microbiology
South, E. (författare)
Department of Microbiology, Uppsala Biocenter, Swedish University of Agricultural Sciences, Uppsala, Sweden
Tiukova, L. (författare)
Department of Microbiology, Uppsala Biocenter, Swedish University of Agricultural Sciences, Uppsala, Sweden
visa fler...
Haddad Momeni, Majid (författare)
Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för molekylärbiologi,Department of Molecular Biology
Hansson, Henrik (författare)
Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för molekylärbiologi,Department of Molecular Biology
Ståhlberg, Jerry (författare)
Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för molekylärbiologi,Department of Molecular Biology
Schnürer, Johan (författare)
Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mikrobiologi,Department of Microbiology
Schnürer, Johan, 1957- (författare)
Department of Microbiology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
Passoth, Volkmar (författare)
Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mikrobiologi,Department of Microbiology
Tiukova, Ievgeniia (författare)
Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mikrobiologi,Department of Microbiology
visa färre...
 (creator_code:org_t)
 
Malden, USA : Wiley-Blackwell, 2011
2011
Engelska.
Ingår i: Letters in Applied Microbiology. - Malden, USA : Wiley-Blackwell. - 0266-8254 .- 1472-765X. ; 53:1, s. 73-78
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Aim: Testing the ability of the alternative ethanol production yeast Dekkera bruxellensis to produce ethanol from lignocellulose hydrolysate and comparing it to Saccharomyces cerevisiae.Methods and Results: Industrial isolates of D. bruxellensis and S. cerevisiae were cultivated in small-scale batch fermentations of enzymatically hydrolysed steam exploded aspen sawdust. Different dilutions of hydrolysate were tested. None of the yeasts grew in undiluted or 1 : 2 diluted hydrolysate [final glucose concentration always adjusted to 40 g l(-1) (0.22 mol l(-1))]. This was most likely due to the presence of inhibitors such as acetate or furfural. In 1 : 5 hydrolysate, S. cerevisiae grew, but not D. bruxellensis, and in 1 : 10 hydrolysate, both yeasts grew. An external vitamin source (e.g. yeast extract) was essential for growth of D. bruxellensis in this lignocellulosic hydrolysate and strongly stimulated S. cerevisiae growth and ethanol production. Ethanol yields of 0 42 +/- 0 01 g ethanol (g glucose)(-1) were observed for both yeasts in 1 : 10 hydrolysate. In small-scale continuous cultures with cell recirculation, with a gradual increase in the hydrolysate concentration, D. bruxellensis was able to grow in 1 : 5 hydrolysate. In bioreactor experiments with cell recirculation, hydrolysate contents were increased up to 1 : 2 hydrolysate, without significant losses in ethanol yields for both yeasts and only slight differences in viable cell counts, indicating an ability of both yeasts to adapt to toxic compounds in the hydrolysate.Conclusions: Dekkera bruxellensis and S. cerevisiae have a similar potential to ferment lignocellulose hydrolysate to ethanol and to adapt to fermentation inhibitors in the hydrolysate.Significance and Impact of the study: This is the first study investigating the potential of D. bruxellensis to ferment lignocellulosic hydrolysate. Its high competitiveness in industrial fermentations makes D. bruxellensis an interesting alternative for ethanol production from those substrates.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Industriell bioteknik -- Biokatalys och enzymteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Industrial Biotechnology -- Biocatalysis and Enzyme Technology (hsv//eng)
NATURVETENSKAP  -- Biologi -- Mikrobiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Microbiology (hsv//eng)
TEKNIK OCH TEKNOLOGIER  -- Industriell bioteknik -- Bioenergi (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Industrial Biotechnology -- Bioenergy (hsv//eng)

Nyckelord

Aspen sawdust
Dekkera bruxellensis
Lignocellulosic hydrolysate
Saccharomyces cerevisiae

Publikations- och innehållstyp

ref (ämneskategori)
art (ämneskategori)

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy