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Optimization of ultrasonic-assisted extraction of polysaccharides from Ulva rigida and evaluation of their antioxidant activity

dc.contributor.authorAkbal, Azat
dc.contributor.authorŞahin, Saliha
dc.contributor.authorGüroy, Betül
dc.contributor.buuauthorŞAHİN, SALİHA
dc.contributor.departmentBursa Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü
dc.contributor.researcheridAAH-2892-2021
dc.date.accessioned2024-10-03T07:54:22Z
dc.date.available2024-10-03T07:54:22Z
dc.date.issued2023-12-08
dc.description.abstractUltrasonic-assisted extraction (UAE) of sulfated polysaccharides from the cell walls of Ulva rigida green macro-algae was performed with a central composite design using the independent variables (pH 2-10, extraction temperature 40-80 degrees C, time 50-130 min and liquid/solid ratio of raw material 15-75 mL/g) with response surface methodology. Optimum conditions were obtained as pH 4.92, extraction temperature 73 degrees C, time 126 min, and the liquid/solid ratio of the raw material as 68 mL/g. Under these optimum conditions, the experimental yield was obtained as 13.22 %, and the results were close and in harmony with the estimated value of 12.91 %. FT-IR results, especially at the peaks corresponding to wave numbers 850 cm-1 and 1256 cm -1, the tension vibrations of sulfated esters in C-O-S and S-O bonds were more clearly observed in the extracted ulvan components. As a result of the SEM images obtained by considering the surface morphology, it was observed that the sulfated polysaccharides from the cell wall were more prominently removed after the lipids were removed and as a result of the precipitation process. While the extracted sulfated polysaccharides showed higher anti-oxidant activity, although the results were close to each other. The total phenolic content was higher in the extracted sulfated polysaccharides.
dc.description.sponsorshipTAGEM (T.C. Tarım ve Orman Bakanlığı Tarımsal Araştırmalar ve Politikalar Genel Müdürlüğü) TAGEM/HSGYAD//21/A3/P5/2305
dc.description.sponsorshipGıda Tarım Ve Hayvancılık Bakanlığı Tarım ve Orman Bakanlığı Tarımsal Araştırmalar ve Politikalar Genel Müdürlüğü
dc.identifier.doi10.1016/j.algal.2023.103356
dc.identifier.issn2211-9264
dc.identifier.urihttps://doi.org/10.1016/j.algal.2023.103356
dc.identifier.urihttps://hdl.handle.net/11452/45761
dc.identifier.volume77
dc.identifier.wos001134798600001
dc.identifier.woshttps://www.sciencedirect.com/science/article/pii/S2211926423003892
dc.indexed.wosWOS.SCI
dc.language.isoen
dc.publisherElsevier
dc.relation.journalAlgal Research-biomass Biofuels and Bioproducts
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectSulfated polysaccharides
dc.subjectNatural antioxidant
dc.subjectChemical-structure
dc.subjectSeaweeds
dc.subjectUlva rigida
dc.subjectCentral composite design
dc.subjectExtracted sulfated polysaccharides
dc.subjectAntioxidant activity
dc.subjectScience & technology
dc.subjectLife sciences & biomedicine
dc.subjectBiotechnology & applied microbiology
dc.titleOptimization of ultrasonic-assisted extraction of polysaccharides from Ulva rigida and evaluation of their antioxidant activity
dc.typeArticle
dspace.entity.typePublication
relation.isAuthorOfPublication4b87bb21-e6b9-4caf-a469-4b4fad49f199
relation.isAuthorOfPublication.latestForDiscovery4b87bb21-e6b9-4caf-a469-4b4fad49f199

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