Evaluation of antioxidant activity of cosmetic plant extracts using DPPH radicalPaulina Malinowska Katedra Technologii i Analizy Instrumentalnej, Wydział Towaroznawstwa, Uniwersytet Ekonomiczny w Poznaniu Summary Introduction. Plant extracts are source of many valuable constituents, which influence the number of their properties and cosmetic activity. Aim. The aim of this work was to screen the antiradical capacity of five commercial cosmetic plant extracts available on Polish cosmetics market. Material and methods. Antiradical activity of five plant extracts (Sambucus nigra, Tilia cordata, Rosa centifolia, Vaccinium myrtillus, Centella asiatica) was evaluated using test with DPPH radical. Results. Among studied plant extracts, Sambucus nigra (black elder) showed the highest antiradical activity and Centella asiatica (hydrocotyle) exhibited the lowest DPPH scavenging activity. The order of DPPH radical scavenging activity of plant extracts at different concentration is as follows: Sambucus nigra, Tilia cordata, Rosa centifolia, Vaccinium myrtillus, Centella asiatica. Conclusions. This study confirmed that some plant extracts exhibit high antiradical capacity and they can be used as a promising natural source of antioxidants suitable for application in cosmetic and pharmaceutical formulations. Key words: plant extracts, cosmetics, antiradical activity, DPPH |