RT Journal Article SR Electronic T1 Grape Stem Extracts From Three Native Greek Vine Varieties Exhibit Strong Antioxidant and Antimutagenic Properties JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 2025 OP 2032 DO 10.21873/anticanres.14159 VO 40 IS 4 A1 ARISTIDIS S. VESKOUKIS A1 ELENI VASSI A1 KONSTANTINOS POULAS A1 MANOLIS KOKKINAKIS A1 EFTIHIA ASPRODINI A1 SERKOS HAROUTOUNIAN A1 DEMETRIOS KOURETAS YR 2020 UL http://ar.iiarjournals.org/content/40/4/2025.abstract AB Background/Aim: The winemaking procedure results in the generation of stems, a by-product that is harmful to the environment. Concomitantly, stems are rich in polyphenols and, hence, they are putatively beneficial for human health. Materials and Methods: In this study, the grape stem extracts derived from three native Greek vine varieties, namely Mavrodaphne, Muscat and Rhoditis were examined for their chemical composition and antioxidant and antimutagenic properties using a battery of in vitro biomarkers. Results: All extracts are rich in polyphenols. Moreover, they exhibit potent antioxidant and antimutagenic properties with the extract of Mavrodaphne being the strongest in reducing the DPPH• and O2−• radicals and the Fe3+ and in protecting plasmid DNA from peroxyl radical-induced oxidative modification. Conclusion: Therefore, although they are serious pollutants, grape stems contain phytochemicals with important biological properties and can be used as (ingredients of) bio-functional foods to improve certain aspects of human health.