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Bioethanol production from sorghum grain with Zymomonas mobilis: increasing the yield and quality of raw distillates

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
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
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.enBACKGROUND The present study aimed to demonstrate the superiority of bioethanol yield and its quality from sorghum using the granular starch degrading enzyme Stargen™ 002 over simultaneous saccharification and fermentation, and separate hydrolysis and fermentation using Zymomonas mobilis CCM 3881 and Ethanol Red® yeast. RESULTS Bacteria were found to produce ethanol at higher yield than the yeast in all fermentations. The highest ethanol yield was obtained with Z. mobilis during 48 h of simultaneous saccharification and fermentation (83.85% theoretical yield) and fermentation with Stargen™ 002 (81.27% theoretical yield). Pre-liquefaction in fermentation with Stargen™ 002 did not improve ethanol yields for both Z. mobilis and Saccharomyces cerevisiae. Chromatographic analysis showed twice less total volatile compounds in distillates obtained after bacterial (3.29–5.54 g L−1) than after yeast (7.84–9.75 g L−1) fermentations. Distillates obtained after bacterial fermentation were characterized by high level of aldehydes (up to 65% of total volatiles) and distillates obtained after yeast fermentation of higher alcohols (up to 95% of total volatiles). The process of fermentation using granular starch hydrolyzing enzyme cocktail Stargen™ 002 resulted in low amounts of all volatile compounds in distillates obtained after bacterial fermentation, but the highest amounts in distillates obtained after yeast fermentation. CONCLUSION The present study emphasizes the great potential of bioethanol production from sorghum with Z. mobilis using granular starch hydrolyzing enzyme Stargen™ 002, which leads to reduced water and energy consumption, especially when energy sources are strongly related to global climate change. © 2023 Society of Chemical Industry.
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.authorFrankowski, Jakub
dc.contributor.authorJeleń, Henryk
dc.date.accessioned2025-09-22T06:44:30Z
dc.date.available2025-09-22T06:44:30Z
dc.date.issued2023
dc.description.abstract<jats:title>Abstract</jats:title><jats:sec><jats:title>BACKGROUND</jats:title><jats:p>The present study aimed to demonstrate the superiority of bioethanol yield and its quality from sorghum using the granular starch degrading enzyme Stargen™ 002 over simultaneous saccharification and fermentation, and separate hydrolysis and fermentation using <jats:italic>Zymomonas mobilis</jats:italic> CCM 3881 and Ethanol Red® yeast.</jats:p></jats:sec><jats:sec><jats:title>RESULTS</jats:title><jats:p>Bacteria were found to produce ethanol at higher yield than the yeast in all fermentations. The highest ethanol yield was obtained with <jats:italic>Z. mobilis</jats:italic> during 48 h of simultaneous saccharification and fermentation (83.85% theoretical yield) and fermentation with Stargen™ 002 (81.27% theoretical yield). Pre‐liquefaction in fermentation with Stargen™ 002 did not improve ethanol yields for both <jats:italic>Z. mobilis</jats:italic> and <jats:italic>Saccharomyces cerevisiae</jats:italic>. Chromatographic analysis showed twice less total volatile compounds in distillates obtained after bacterial (3.29–5.54 g L<jats:sup>−1</jats:sup>) than after yeast (7.84–9.75 g L<jats:sup>−1</jats:sup>) fermentations. Distillates obtained after bacterial fermentation were characterized by high level of aldehydes (up to 65% of total volatiles) and distillates obtained after yeast fermentation of higher alcohols (up to 95% of total volatiles). The process of fermentation using granular starch hydrolyzing enzyme cocktail Stargen™ 002 resulted in low amounts of all volatile compounds in distillates obtained after bacterial fermentation, but the highest amounts in distillates obtained after yeast fermentation.</jats:p></jats:sec><jats:sec><jats:title>CONCLUSION</jats:title><jats:p>The present study emphasizes the great potential of bioethanol production from sorghum with <jats:italic>Z. mobilis</jats:italic> using granular starch hydrolyzing enzyme Stargen™ 002, which leads to reduced water and energy consumption, especially when energy sources are strongly related to global climate change. © 2023 Society of Chemical Industry.</jats:p></jats:sec>
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if3,3
dc.description.number12
dc.description.points100
dc.description.volume103
dc.identifier.doi10.1002/jsfa.12688
dc.identifier.eissn1097-0010
dc.identifier.issn0022-5142
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/5001
dc.languageen
dc.relation.ispartofJournal of the Science of Food and Agriculture
dc.relation.pages6080-6094
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.ensorghum grains
dc.subject.enfermentation
dc.subject.enZymomonas mobilis
dc.subject.engranular starch
dc.subject.envolatile by-products
dc.titleBioethanol production from sorghum grain with Zymomonas mobilis: increasing the yield and quality of raw distillates
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue12
oaire.citation.volume103