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Low-waste technology for the production of bioethanol from sorghum grain: Comparison of Zymomonas mobilis and Saccharomyces cerevisiae in fermentation with stillage reusing

cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid0000-0003-4570-7221
cris.virtual.author-orcid0000-0002-4176-6358
cris.virtual.author-orcid0000-0002-6568-8155
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cris.virtualsource.author-orcidcb3305a8-f370-4ea4-b74d-97bd22a2d068
cris.virtualsource.author-orciddafe00c4-99bb-45f5-8886-d6f261ff6cb3
cris.virtualsource.author-orcid0bfd6d64-735f-474a-91ed-e325fff77417
cris.virtualsource.author-orcid1ddb8111-48d2-4a19-a7fb-97562fc1691c
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.abstract.enZymomonas mobilis and Saccharomyces cerevisiae have been used for simultaneous saccharification and fermentation of sorghum grain with the reuse of the stillage. This study investigated the effects of replacing half the water by a stillage liquid fraction on ethanol yield and volatile compound synthesis. Studies have shown that Z. mobilis is more efficient in ethanol production (55.96–61.48 g/L) than S. cerevisiae (55.26–58.38 g/L). Additionally, Z. mobilis had the advantage of a shorter fermentation time (48 h) and lower fermentation temperature (35 °C) than distillery yeast. No relationship was observed between successive stillage reusing and ethanol content. Reusing the liquid fraction of the stillage did not increase the amount of volatile compounds identified in the raw distillates. Significant differences were observed in the volatile compounds profile of bacterial and yeast raw distillates. Acetaldehyde was the dominant compound in bacterial raw distillates, whereas 3-methylbutan-1-ol was the dominant compound in yeast raw distillates. The characteristic of Z. mobilis was the production of fewer (4.31–6.03 g/L spirit 100%) volatile compounds compared to yeast (4.04–7.44 g/L spirit 100%). The fermentation process reusing the liquid part of the stillage made it possible to reduce process water consumption and waste generation in bioethanol production from sorghum grain. In addition, Z. mobilis made ethanol production from sorghum grain grown in Eastern Europe more beneficial.
dc.affiliationWydział Nauk o Żywności i Żywieniu
dc.affiliation.instituteKatedra Technologii Żywności Pochodzenia Roślinnego
dc.contributor.authorSzambelan, Katarzyna Teresa
dc.contributor.authorSzwengiel, Artur
dc.contributor.authorNowak, Jacek
dc.contributor.authorJeleń, Henryk
dc.contributor.authorFrankowski, Jakub
dc.date.accessioned2026-03-09T06:41:57Z
dc.date.available2026-03-09T06:41:57Z
dc.date.issued2022
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if11,1
dc.description.number10 June 2022
dc.description.points140
dc.description.volume352
dc.identifier.doi10.1016/j.jclepro.2022.131607
dc.identifier.eissn1879-1786
dc.identifier.issn0959-6526
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/7703
dc.languageen
dc.relation.ispartofJournal of Cleaner Production
dc.relation.pagesart. 131607
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleLow-waste technology for the production of bioethanol from sorghum grain: Comparison of Zymomonas mobilis and Saccharomyces cerevisiae in fermentation with stillage reusing
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.volume352