Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • harvard-cite-them-right
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
In situ detoxification and continuous cultivation of dilute-acid hydrolyzate to ethanol by encapsulated S. cerevisiae
Chalmers University of Technology.
Högskolan i Borås, Akademin för textil, teknik och ekonomi.ORCID-id: 0000-0003-4887-2433
2006 (engelsk)Inngår i: Journal of Biotechnology, ISSN 0168-1656, E-ISSN 1873-4863, Vol. 125, nr 3, s. 377-384Artikkel i tidsskrift (Fagfellevurdert) Published
Hållbar utveckling
Jag anser att innehållet i publikationen faller inom ämnet hållbar utveckling.
Abstract [en]

Dilute-acid lignocellulosic hydrolyzate was successfully fermented to ethanol by encapsulated Saccharomyces cerevisiae at dilution rates up to 0.5 h-1. The hydrolyzate was so toxic that freely suspended yeast cells could ferment it continuously just up to dilution rate 0.1 h-1, where the cells lost 75% of their viability measured by colony forming unit (CFU). However, encapsulation increased their capacity for in situ detoxification of the hydrolyzate and protected the cells against the inhibitors present in the hydrolyzate. While the cells were encapsulated, they could successfully ferment the hydrolyzate at tested dilution rates 0.1-0.5 h-1, and keep more than 75% cell viability in the worst conditions. They produced ethanol with yield 0.44 ± 0.01 g/g and specific productivity 0.14-0.17 g/(g h) at all dilution rates. Glycerol was the main by-product of the cultivations, which yielded 0.039-0.052 g/g. HMF present in the hydrolyzate was converted 48-71% by the encapsulated yeast, while furfural was totally converted at dilution rates 0.1 and 0.2 h-1 and partly at the higher rates. Continuous cultivation of encapsulated yeast was also investigated on glucose in synthetic medium up to dilution rate 1.0 h-1. At this highest rate, ethanol and glycerol were also the major products with yields 0.43 and 0.076 g/g, respectively. The experiments lasted for 18-21 days, and no damage in the capsules was detected. 

sted, utgiver, år, opplag, sider
Elsevier, 2006. Vol. 125, nr 3, s. 377-384
Emneord [en]
Dilute-acid hydrolyzate, Encapsulation, Ethanol, In situ detoxification, S. cerevisiae
HSV kategori
Forskningsprogram
Resursåtervinning
Identifikatorer
URN: urn:nbn:se:hb:diva-14864DOI: 10.1016/j.jbiotec.2006.03.013ISI: 000240258700008PubMedID: 16621080Scopus ID: 2-s2.0-33747126062ISBN: 01681656 (ISSN) OAI: oai:DiVA.org:hb-14864DiVA, id: diva2:1236298
Tilgjengelig fra: 2018-08-01 Laget: 2018-08-01 Sist oppdatert: 2018-08-08bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekstPubMedScopus

Personposter BETA

Taherzadeh, Mohammad J

Søk i DiVA

Av forfatter/redaktør
Taherzadeh, Mohammad J
Av organisasjonen
I samme tidsskrift
Journal of Biotechnology

Søk utenfor DiVA

GoogleGoogle Scholar

doi
pubmed
isbn
urn-nbn

Altmetric

doi
pubmed
isbn
urn-nbn
Totalt: 2 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • harvard-cite-them-right
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf