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
Co-production of fungal biomass derived constituents and ethanol from citruswastes free sugars without auxiliary nutrients in airlift bioreactor
Swedish Centre for Resource Recovery, University of Borås.
Department of Chemical Engineering, Isfahan University of Technology.
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0003-4887-2433
University of Borås, Faculty of Textiles, Engineering and Business.
2016 (English)In: International Journal of Molecular Sciences, ISSN 1422-0067, E-ISSN 1422-0067, Vol. 17, no 3Article in journal (Refereed) Published
Abstract [en]

The potential of two zygomycetes fungi, Mucor indicus and Rhizopus oryzae, in assimilating citrus waste free sugars (CWFS) and producing fungal chitosan, oil, and protein as well as ethanol was investigated. Extraction of free sugars from citrus waste can reduce its environmental impact by decreasing the possibility of wild microorganisms growth and formation of bad odors, a typical problem facing the citrus industries. A total sugar concentration of 25.1 g/L was obtained by water extraction of citrus waste at room temperature, used for fungal cultivation in shake flasks and airlift bioreactor with no additional nutrients. In shake flasks cultivations, the fungi were only able to assimilate glucose, while fructose remained almost intact. In contrast, the cultivation of M. indicus and R. oryzae in the four-liter airlift bioreactor resulted in the consumption of almost all sugars and production of 250 and 280 g fungal biomass per kg of consumed sugar, respectively. These biomasses correspondingly contained 40% and 51% protein and 9.8% and 4.4% oil. Furthermore, the fungal cell walls, obtained after removing the alkali soluble fraction of the fungi, contained 0.61 and 0.69 g chitin and chitosan per g of cell wall for M. indicus and R. oryzae, respectively. Moreover, the maximum ethanol yield of 36% and 18% was obtained from M. indicus and R. oryzae, respectively. Furthermore, that M. indicus grew as clump mycelia in the airlift bioreactor, while R. oryzae formed spherical suspended pellets, is a promising feature towards industrialization of the process. 

Place, publisher, year, edition, pages
MDPI AG , 2016. Vol. 17, no 3
Keywords [en]
Chitosan, Citrus waste, Ethanol, Mucor indicus, Oil, Pellet, Protein, Rhizopus oryzae
National Category
Other Industrial Biotechnology
Identifiers
URN: urn:nbn:se:hb:diva-14842DOI: 10.3390/ijms17030302ISI: 000373712800125PubMedID: 26927089Scopus ID: 2-s2.0-84959230541ISBN: 16616596 (ISSN) OAI: oai:DiVA.org:hb-14842DiVA, id: diva2:1236360
Available from: 2018-08-02 Created: 2018-08-02 Last updated: 2018-08-02

Open Access in DiVA

fulltext(1087 kB)3 downloads
File information
File name FULLTEXT01.pdfFile size 1087 kBChecksum SHA-512
d75510e1ee048b5123eabbcc8289c05897d8126056634f13065cbc330be31f81e0611bb0308ec75fde04a08f44b1bf5af79284f442ed9319ae5cbf6268ce6af0
Type fulltextMimetype application/pdf

Other links

Publisher's full textPubMedScopus

Authority records BETA

Taherzadeh, Mohammad JZamani, Akram

Search in DiVA

By author/editor
Taherzadeh, Mohammad JZamani, Akram
By organisation
Faculty of Textiles, Engineering and Business
In the same journal
International Journal of Molecular Sciences
Other Industrial Biotechnology

Search outside of DiVA

GoogleGoogle Scholar
Total: 3 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
pubmed
isbn
urn-nbn

Altmetric score

doi
pubmed
isbn
urn-nbn
Total: 11 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