{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,5]],"date-time":"2026-09-05T04:36:44Z","timestamp":1788583004138,"version":"build-2803163510"},"reference-count":63,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2022,11,23]],"date-time":"2022-11-23T00:00:00Z","timestamp":1669161600000},"content-version":"vor","delay-in-days":326,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003081","name":"Ministry of Education, Ethiopia","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003081","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2022,1]]},"abstract":"<jats:p>In this study, the antioxidative activity and polyphenolic content of <jats:italic>Syzygium aromaticum<\/jats:italic>\u2019s flower bud were compared under different extraction solvents including chloroform, ethyl acetate, methanol, and aqueous. The antioxidant activity was assessed <jats:italic>via<\/jats:italic> established <jats:italic>in vitro<\/jats:italic> assay models such as 2, 2\u2010diphenyl\u20101\u2010Picrylhydrazyl (DPPH) radical scavenging assay, NO<jats:sup>-<\/jats:sup> radical scavenging assay, H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> scavenging assay and Fe<jats:sup>3+<\/jats:sup> reducing capacity. Total phenolic content was measured according to Folin\u2013Ciocalteu\u2019s method, and total flavonoid content was estimated by using the aluminum chloride colorimetric method. The results showed that aqueous extract possessed the highest TPC (19.11 \u00b1 2.76\u2009mg GAE\/g DW) and TFC (15.32 \u00b1 1.53\u2009mg CtE\/g DW). Among the extracts, methanol extract exerted the strongest radical DPPH quenching activity with an IC<jats:sub>50<\/jats:sub> value of 303.56 \u00b1 13.14\u2009<jats:italic>\u03bc<\/jats:italic>g\/mL. The highest NO<jats:sup>-<\/jats:sup> radical scavenging activity was shown by methanol extract (IC<jats:sub>50<\/jats:sub>192.94 \u00b1 1.9\u2009<jats:italic>\u03bc<\/jats:italic>g\/mL) which is stronger than BHT (IC<jats:sub>50<\/jats:sub>247.64 \u00b1 12.89\u2009<jats:italic>\u03bc<\/jats:italic>g\/mL). Methanol extract showed a strong H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> scavenging activity (IC<jats:sub>50<\/jats:sub>233.71 \u00b1 3.72\u2009<jats:italic>\u03bc<\/jats:italic>g\/mL). The highest Fe<jats:sup>3+<\/jats:sup> reducing capacity was shown by methanol extract (Absorbance = 0.36 \u00b1 0.05). Strong and positive correlations were observed between total phenolic and flavonoid contents and the antioxidant assays. The results of the present work revealed that the tested spice demonstrated high antioxidant activity, total phenolics, and flavonoids. Thus, this spice is worth considering as important source of natural antioxidant agents.<\/jats:p>","DOI":"10.1155\/2022\/4568944","type":"journal-article","created":{"date-parts":[[2022,11,24]],"date-time":"2022-11-24T22:02:16Z","timestamp":1669327336000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Effect of Extraction Solvents on Total Polyphenolic Content and Antioxidant Capacity of <i>Syzygium Aromaticum<\/i> L. Flower Bud from Ethiopia"],"prefix":"10.1155","volume":"2022","author":[{"given":"Shibiru","family":"Temesgen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1245-4109","authenticated-orcid":false,"given":"J. 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