Optimization of Green Extraction Techniques for Polyphenolics in Pinus brutia Bark Extract and Steam Gasification of the Remaining Fraction to Obtain Hydrogen-Rich Syngas and Activated Carbon

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dc.authorid0000-0002-6388-6991
dc.authorid0000-0003-2980-5403
dc.authorid0000-0003-0597-5133
dc.authorid0000-0003-2482-7371
dc.contributor.authorYildiz Ozturk, Ece
dc.contributor.authorSecim Karakaya, Pelin
dc.contributor.authorAlptekin, Fikret Muge
dc.contributor.authorCeliktas, Melih Soner
dc.date.accessioned2025-02-19T13:18:57Z
dc.date.available2025-02-19T13:18:57Z
dc.date.issued2024
dc.departmentEge Üniversitesi
dc.description.abstractUtilization of renewable resources has become imperative, and considerable efforts have been devoted to tackling diverse global sustainability challenges, which contribute to the circular economy. The focus of this work was to optimize the extraction of polyphenolic compounds in Pinus brutia bark using microwave-assisted (MAE) and ultrasonically assisted (UAE) extractions and evaluate the biological efficacies of the extracts. Additionally, the residue of the extracted pine bark was subjected to steam gasification to produce hydrogen-rich syngas and activated carbon. The optimum process parameters for MAE were determined as 70 degrees C, 10 min, and 900 W, and 987.32 mg gallic acid equivalent (GAE), 23.7 mg quercetin/g extract, and 86.2% antioxidant activity were obtained. The optimum process parameters for UAE were determined as 70 degrees C, 20 min, and 50% power, and 811.84 mg gallic acid equivalent (GAE), 30.1 mg quercetin/g extract, and 90.8% antioxidant efficiency were obtained. The extracts obtained under optimized conditions were assessed for the bioactive phenolic compounds taxifolin, (-)-catechin, (-)-epicatechin, and (-)-epicatechin gallate by ultra performance liquid chromatography (UPLC). Especially in MAE (ethanol), taxifolin content was notable (34.0 mg/g extract), followed by UAE (ethanol) (23.5 mg/g extract). Compared to MAE (ethanol) and UAE (ethanol) with regards to catechin content, 1.05 mg/g extract and 0.81 mg/g extract were obtained, respectively. Catalytic and noncatalytic steam gasification of pine bark residue yielded 57.3 and 60.8 mol % H2, respectively. In addition, excellent tar reduction was achieved through utilizing a 10% boron-modified CaO alkali catalyst, and the obtained activated carbon exhibited 1358.32 m2/g Brunauer-Emmett-Teller (BET) surface area and 1.05 cm3/g total pore volume, which has potential use as an adsorbent for removing heavy metals and electrode material for supercapacitor application.
dc.identifier.citationYildiz-Ozturk, E., Secim-Karakaya, P., Alptekin, F. M., & Celiktas, M. S. (2024). Optimization of green extraction techniques for polyphenolics in pinus brutia bark extract and steam gasification of the remaining fraction to obtain hydrogen-rich syngas and activated carbon. ACS Omega, 9(51), 50158-50174.
dc.identifier.doi10.1021/acsomega.4c01083
dc.identifier.endpage50174
dc.identifier.issn2470-1343
dc.identifier.issue51
dc.identifier.pmid39741869
dc.identifier.scopus2-s2.0-85212232543
dc.identifier.scopusqualityQ1
dc.identifier.startpage50158
dc.identifier.urihttps://doi.org/10.1021/acsomega.4c01083
dc.identifier.urihttps://hdl.handle.net/11454/116087
dc.identifier.volume9
dc.identifier.wosWOS:001378019500001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthorSecim Karakaya, Pelin
dc.institutionauthorAlptekin, Fikret Muge
dc.institutionauthorCeliktas, Melih Soner
dc.institutionauthorid0000-0002-6388-6991
dc.institutionauthorid0000-0003-2980-5403
dc.institutionauthorid0000-0003-0597-5133
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.relation.ispartofACS Omega
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectstevıa-rebaudıana leaves
dc.subjectphenolıc-compounds
dc.subjectantıoxıdant actıvıty
dc.subjectstress
dc.titleOptimization of Green Extraction Techniques for Polyphenolics in Pinus brutia Bark Extract and Steam Gasification of the Remaining Fraction to Obtain Hydrogen-Rich Syngas and Activated Carbon
dc.typeArticle

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