Effects of cold-press and soxhlet extraction systems on antioxidant activity, total phenol contents, fatty acids, and tocopherol contents of walnut kernel oils

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dc.contributor.authorAhmed, Isam A. Mohamed
dc.contributor.authorAl-Juhaimi, Fahad Y.
dc.contributor.authorÖzcan, Mehmet Musa
dc.contributor.authorOsman, Magdi A.
dc.contributor.authorGassem, Mustafa A.
dc.contributor.authorSalih, Hesham A. A.
dc.date.accessioned2020-03-26T20:13:45Z
dc.date.available2020-03-26T20:13:45Z
dc.date.issued2019
dc.departmentSelçuk Üniversitesi, Ziraat Fakültesi, Gıda Mühendisliği Bölümüen_US
dc.description.abstractIn this study, physico-chemical properties, fatty acid composition, and tocopherol contents of several walnut kernel oils obtained through cold-press and Soxhlet extractions were investigated. The acidity, peroxide, and unsaponifiable matter of oil samples extracted in the Soxhlet system were found higher. Total phenol contents of the oils obtained in cold press and Soxhlet extraction systems were 121.9 mg GAE/100g (Kaman-2) and 154.6 mg GAE/ 100g (Buyukoba), and between 135.9 mg GAE/100g (Kaman-2) and 163.8 mg GAE/100g (Buyukoba), respectively (p < 0.05). In addition, antioxidant activity valuesof walnut oils obtained in cold press and Soxhlet extractions varied between 17.3% (Kaman-2) and 19.7% (Kaman-5), and between 18.4% (Kaman-2) and 23.8% (Buyukoba), respectively (p < 0.05). Linoleic acid contents of the oil samples extracted in cold-press varied between 55.19% (Kaman-5) and 56.71% (Kaman-2), while that extracted from Soxhlet extraction system varied between 54.47% (Kaman-2) and 55.93% (Buyukoba). gamma-Tocopherol contents of walnut oils extracted in cold press and Soxhlet extraction ranged between 9.41 mg/100g (Buyukoba) and 10.83 mg/100g (Kaman-2), and 8.76 mg/100g (Kaman-5) and 9.33 mg/100g (Kaman-2), respectively, and were statistically significant (p < 0.05).en_US
dc.description.sponsorshipDeanship of Scientific Research at King Saud UniversityDeanship of Scientific Research at King Saud University [RG-1439-80]en_US
dc.description.sponsorshipThe authors extend their appreciation to the Deanship of Scientific Research at King Saud University for funding this work through research group no. RG-1439-80. Technical support of RSSU at King Saud University is also well appreciated.en_US
dc.identifier.citationAhmed, I. A. M., Al-Juhaimi, F. Y., Özcan, M. M., Osman, M. A., Gassem, M. A., Salih, H. A. (2019). Effects of Cold-Press and Soxhlet Extraction Systems on Antioxidant Activity, Total Phenol Contents, Fatty Acids, and Tocopherol Contents of Walnut Kernel Oils. Journal of Oleo Science, 68(2), 167-173.
dc.identifier.doi10.5650/jos.ess18141en_US
dc.identifier.endpage173en_US
dc.identifier.issn1345-8957en_US
dc.identifier.issn1347-3352en_US
dc.identifier.issue2en_US
dc.identifier.pmid30651416en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage167en_US
dc.identifier.urihttps://dx.doi.org/10.5650/jos.ess18141
dc.identifier.urihttps://hdl.handle.net/20.500.12395/37755
dc.identifier.volume68en_US
dc.identifier.wosWOS:000458084400007en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.institutionauthorÖzcan, Mehmet Musa
dc.language.isoenen_US
dc.publisherJAPAN OIL CHEMISTS SOCen_US
dc.relation.ispartofJOURNAL OF OLEO SCIENCEen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectwalnut oilen_US
dc.subjecttotal phenolen_US
dc.subjectantioxidant activityen_US
dc.subjectfatty acidsen_US
dc.subjecttocopherolsen_US
dc.subjectGCen_US
dc.subjectHPLCen_US
dc.titleEffects of cold-press and soxhlet extraction systems on antioxidant activity, total phenol contents, fatty acids, and tocopherol contents of walnut kernel oilsen_US
dc.typeArticleen_US

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