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dc.creatorDjukić-Vuković, Aleksandra
dc.creatorMladenović, Dragana
dc.creatorRadosavljević, Miloš
dc.creatorKocić-Tanackov, Sunčica
dc.creatorPejin, Jelena
dc.creatorMojović, Ljiljana
dc.date.accessioned2021-03-10T13:10:22Z
dc.date.available2021-03-10T13:10:22Z
dc.date.issued2016
dc.identifier.issn0956-053X
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/3379
dc.description.abstractWaste substrates from bioethanol and beer productions are cheap, abundant and renewable substrates for biorefinery production of lactic acid (LA) and variability in their chemical composition presents a challenge in their valorisation. Three types of waste substrates, wasted bread and wasted potato stillage from bioethanol production and brewers' spent grain hydrolysate from beer production were studied as substrates for the production of L(+) LA and probiotic biomass by Lactobacillus rhamnosus ATCC 7469. The correlation of the content of free alpha amino nitrogen and the production of LA was determined as a critical characteristic of the waste media for efficient LA production by L. rhamnosus on the substrates which contained equal amount of fermentable sugars. A maximal LA productivity of 1.54 g L-1 h(-1) was obtained on wasted bread stillage media, whilst maximal productivities achieved on the potato stillage and brewers' spent grain hydrolysate media were 1.28 g L-1 h(-1) and 0.48 g L-1 h(-1), respectively. A highest LA yield of 0.91 g g(-1) was achieved on wasted bread stillage media, followed by the yield of 0.81 g g(-1) on wasted potato stillage and 0.34 g g(-1) on brewers' spent grain hydrolysate media. The kinetics of sugar consumption in the two stillage substrates were similar while the sugar conversion in brewers' spent grain hydrolysate was slower and less efficient due to significantly lower content of free alpha amino nitrogen. The lignocellulosic hydrolysate from beer production required additional supplementation with nitrogen.en
dc.publisherPergamon-Elsevier Science Ltd, Oxford
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/31017/RS//
dc.rightsrestrictedAccess
dc.sourceWaste Management
dc.subjectLactic aciden
dc.subjectBiorefineryen
dc.subjectStillageen
dc.subjectBrewers' spent grainsen
dc.subjectProbioticsen
dc.subjectFree alpha amino nitrogenen
dc.titleWastes from bioethanol and beer productions as substrates for L(+) lactic acid production - A comparativeen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage482
dc.citation.other48: 478-482
dc.citation.rankM21
dc.citation.spage478
dc.citation.volume48
dc.identifier.doi10.1016/j.wasman.2015.11.031
dc.identifier.pmid26639411
dc.identifier.rcubconv_4887
dc.identifier.scopus2-s2.0-84952989599
dc.identifier.wos000368563500054
dc.type.versionpublishedVersion


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