{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T22:07:44Z","timestamp":1783030064008,"version":"3.54.6"},"reference-count":37,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2009,7,16]],"date-time":"2009-07-16T00:00:00Z","timestamp":1247702400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The antioxidant activity ofwater, ethanol and methanol Hieracium pilosella L.extracts is reported. The antioxidative activity was tested by spectrophotometrically measuring their ability to scavenge a stable DPPH\u00b7 free radical and a reactive hydroxyl radical trapped by DMPO during the Fenton reaction, using the ESR spectroscopy. Total phenolic content and total flavonoid content were evaluated according to the Folin-Ciocalteu procedure, and a colorimetric method, respectively. A HPLC method was used for identification of some phenolic compounds (chlorogenic acid, apigenin-7-O-glucoside and umbelliferone). The antioxidant activity of the investigated extracts slightly differs depending on the solvent used. The concentration of 0.30 mg\/mL of water, ethanol and methanol extract is less effective in scavenging hydroxyl radicals (56.35, 58.73 and 54.35%, respectively) in comparison with the DPPH\u00b7 radical scavenging activity (around 95% for all extracts). The high contents of total phenolic compounds (239.59\u2013244.16 mg GAE\/g of dry extract) and total flavonoids (79.13\u201382.18 mg RE\/g of dry extract) indicated that these compounds contribute to the antioxidative activity.<\/jats:p>","DOI":"10.3390\/s90705702","type":"journal-article","created":{"date-parts":[[2009,7,16]],"date-time":"2009-07-16T11:43:22Z","timestamp":1247744602000},"page":"5702-5714","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":105,"title":["Antioxidant Activity and Total Phenolic and Flavonoid Contents of Hieracium pilosella L. Extracts"],"prefix":"10.3390","volume":"9","author":[{"given":"Ljiljana","family":"Stanojevi\u0107","sequence":"first","affiliation":[{"name":"University of Nis, Faculty of Technology, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mihajlo","family":"Stankovi\u0107","sequence":"additional","affiliation":[{"name":"University of Nis, Faculty of Technology, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vesna","family":"Nikoli\u0107","sequence":"additional","affiliation":[{"name":"University of Nis, Faculty of Technology, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ljubi\u0161a","family":"Nikoli\u0107","sequence":"additional","affiliation":[{"name":"University of Nis, Faculty of Technology, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Du\u0161ica","family":"Risti\u0107","sequence":"additional","affiliation":[{"name":"University of Nis, Faculty of Technology, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jasna","family":"\u010canadanovic-Brunet","sequence":"additional","affiliation":[{"name":"University of Novi Sad, Faculty of Technology, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vesna","family":"Tumbas","sequence":"additional","affiliation":[{"name":"University of Novi Sad, Faculty of Technology, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2009,7,16]]},"reference":[{"key":"ref_1","first-page":"1142","article-title":"Antioxidant activity, phenol and flavonoid contents of some selected Iranian medicinal plants","volume":"5","author":"Pourmorad","year":"2006","journal-title":"Afr. 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