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Comparison of antioxidant activity of selected commercial cosmetic plant roots extracts





Key words: 

plant root extracts, antioxidant activity, cosmetic products.


The aim of this work was to evaluate the total phenolic content and the antioxidant activity of three commercial root extracts used in cosmetic products: Glycyrrhiza glabra (liquorice), Harpagophytum procumbens (devil's claw) and Krameria triandra (rhatany). DPPH radical scavenging activity and Trolox Equivalent Antioxidant Capacity (TEAC) assays were chosen to evaluate the antioxidant activity of extracts.  The total phenolic content varied widely in tested extracts and ranged from 75.9 mg/L in rhatany extract to 952.8 mg/L in liquorice extract. DPPH radical scavenging activity, calculated as EC50 value, ranged from 1.56% for rhatany extract to 0.48% for liquorice extract, and calculated as AADPPH, ranged from 0.64 for rhatany extract to 2.08 for liquorice extract. Antioxidant activity, expressed as TEAC values, ranged from 0.51 mmol/L for devil's claw extract to 7.86 mmol/L for liquorice extract. 

dr inż. Paulina MALINOWSKA dr inż. Justyna KIEWLICZ

Poznan University of Economics and Business Faculty of Commodity Science  Department of Technology and Instrumental Analysis Aleja Niepodległości 10, 61-875 Poznań, Poland e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.





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