Genotype-Related Differences in the Phenolic Compound Profile and Antioxidant Activity of Extracts from Olive (Olea europaea L.) Leaves

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dc.authorid0000-0001-8313-3092
dc.authorid0000-0001-9731-0045
dc.authorid0000-0001-7936-1383
dc.authorid0000-0001-6588-8563
dc.authorscopusid56634751100
dc.authorscopusid6602826024
dc.authorscopusid7005175986
dc.authorscopusid6506004702
dc.authorscopusid39262132200
dc.authorwosidOrak, Adnan/ABA-6719-2020
dc.authorwosidKarama?, Magdalena/R-9049-2016
dc.authorwosidorak, hulya/ABA-6973-2020
dc.authorwosidAmarowicz, Ryszard/H-7154-2017
dc.authorwosidPENKACIK, Kamila/H-7235-2017
dc.contributor.authorOrak, Hakime Hülya
dc.contributor.authorKaramac, Magdalena
dc.contributor.authorAmarowicz, Ryszard
dc.contributor.authorOrak, Adnan
dc.contributor.authorPenkacik, Kamila
dc.date.accessioned2022-05-11T14:14:26Z
dc.date.available2022-05-11T14:14:26Z
dc.date.issued2019
dc.departmentMeslek Yüksekokulları, Teknik Bilimler Meslek Yüksekokulu, Gıda İşleme Bölümü
dc.departmentFakülteler, Ziraat Fakültesi, Tarla Bitkileri Bölümü
dc.description.abstractThe phenolic compound contents and antioxidant activities of the leaf extracts of nine olive genotypes were determined, and the obtained data were analysed using chemometric techniques. In the crude extracts, 12 compounds belonging to the secoiridoids, phenylethanoids, and flavonoids were identified. Oleuropein was the primary component for all genotypes, exhibiting a content of 21.0 to 98.0 mg/g extract. Hydroxytyrosol, verbascoside, luteolin 7-O-glucoside, and luteolin 4-O-glucoside were also present in noticeable quantities. Genotypes differed to the greatest extent in the content of verbascoside (0.45-21.07 mg/g extract). The content of hydroxytyrosol ranged from 1.33 to 4.03 mg/g extract, and the aforementioned luteolin glucosides were present at 1.58-8.67 mg/g extract. The total phenolic content (TPC), DPPH center dot and ABTS(center dot+) scavenging activities, ferric reducing antioxidant power (FRAP), and ability to inhibit the oxidation of -carotene-linoleic acid emulsion also varied significantly among genotypes. A hierarchical cluster analysis enabled the division of genotypes into three clusters with similarity above 60% in each group. GGE biplot analysis showed olive genotypes variability with respect to phenolic compound contents and antioxidant activities. Significant correlations among TPC, FRAP, the values of both radical scavenging assays, and the content of oleuropein were found. The contents of 7-O-glucoside and 4-O-glucoside correlated with TPC, TEAC, FRAP, and the results of the emulsion oxidation assay.
dc.description.sponsorshipTurkey's Higher Education Council (YOK)
dc.description.sponsorshipHakime H. Orak thanks Turkey's Higher Education Council (YOK) for financial support for her stay at the Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences in Olsztyn. The authors would like to thank the Izmir Olive Research Institute in Turkey for providing olive leaves and identification of the collected plant material.
dc.identifier.doi10.3390/molecules24061130
dc.identifier.issn1420-3049
dc.identifier.issue6en_US
dc.identifier.pmid30901940
dc.identifier.scopus2-s2.0-85063577807
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.3390/molecules24061130
dc.identifier.urihttps://hdl.handle.net/20.500.11776/5901
dc.identifier.volume24
dc.identifier.wosWOS:000465503800106
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthorOrak, Hakime Hülya
dc.institutionauthorOrak, Adnan
dc.language.isoen
dc.publisherMdpi
dc.relation.ispartofMolecules
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectolive leaf extract
dc.subjectphenolic profile
dc.subjectantioxidant activity
dc.subjectGGE biplot analysis
dc.subjectcluster analysis
dc.subjectolive genotypes
dc.subjectScavenging Activity
dc.subjectBy-Products
dc.subjectCultivars
dc.subjectArbequina
dc.subjectFruits
dc.titleGenotype-Related Differences in the Phenolic Compound Profile and Antioxidant Activity of Extracts from Olive (Olea europaea L.) Leaves
dc.typeArticle

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