Supercritical ethanol extraction of bio-oils from German beech wood: Design of experiments

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dc.contributor.authorAkalin, Mehmet Kuddusi
dc.contributor.authorKaragoz, Selhan
dc.contributor.authorAkyuz, Mehmet
dc.date.accessioned2024-09-29T15:57:22Z
dc.date.available2024-09-29T15:57:22Z
dc.date.issued2013
dc.departmentKarabük Üniversitesien_US
dc.description.abstractA central composite experimental design was used to investigate experimental process conditions (extraction temperature, extraction time and biomass loading) for the supercritical ethanol extraction of bio-oils from German beech wood. The effects of three independent variables and their interactions on the yields of ethanol extracts and biomass conversion were analyzed using response surface methodology (RSM). The most significant variable was found to be the temperature on the yields of ethanol extract and biomass conversion. High correlation coefficients (R-2) were obtained and they were 0.93 and 0.95 for ethanol extract and biomass conversion yields, respectively. The consistent matching of predicted values with the experimental values is an indication of validity of the model used in this study. Optimized conditions were in the range of the experimental design which shows the validity of the design. Optimal conditions for the ethanol extract yield were 315.81 degrees C extraction temperature, 123.67 min extraction time, and 15.95 wt% biomass loading. The bio-oil contained mainly phenolic compounds. The analyses of results show that the linear coefficient of x(1) and the quadratic coefficient of x(1)(2) are the most statistically significant factors on the ethanol extract and biomass conversion yield. The ethanol extracts (bio-oils) contained greater amounts of carbon and lesser amounts of oxygen than that of the raw material. (C) 2013 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipKarabuk University [KBU-BAP-13/1-DR-008]en_US
dc.description.sponsorshipThe authors gratefully acknowledge Karabuk University for financial support (KBU-BAP-13/1-DR-008). Our special thanks go to Tepe Home Company for providing the raw material.en_US
dc.identifier.doi10.1016/j.indcrop.2013.06.036
dc.identifier.endpage729en_US
dc.identifier.issn0926-6690
dc.identifier.scopus2-s2.0-84880607419en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage720en_US
dc.identifier.urihttps://doi.org/10.1016/j.indcrop.2013.06.036
dc.identifier.urihttps://hdl.handle.net/20.500.14619/4775
dc.identifier.volume49en_US
dc.identifier.wosWOS:000324566600097en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofIndustrial Crops and Productsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectWooden_US
dc.subjectSupercritical ethanolen_US
dc.subjectExtractionen_US
dc.subjectSurface response methodologyen_US
dc.titleSupercritical ethanol extraction of bio-oils from German beech wood: Design of experimentsen_US
dc.typeArticleen_US

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