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Antioxidant activity of extracts from plant seeds used in cosmetic products





Key words: 

plant seed extracts, antioxidant activity, cosmetic products.


The aim of this work was to evaluate the total phenolic content and the antioxidant activity of four commercial seed extracts available on Polish cosmetics market: Silybum marianum (milk thistle), Aesculus hippocastanum (horse chestnut), Glycine soja (soybean) and Avena sativa (oat). DPPH radical scavenging activity and Trolox Equivalent Antioxidant Capacity (TEAC) assays were chosen to evaluate the antioxidant activity of extracts.  The polyphenol content in extracts ranged from 110.7 mg/L in oat seed extract to 839.9 mg/L in milk thistle seed extract. DPPH radical scavenging activity, expressed as EC50 value, ranged from 1.35% for oat seed extract to 0.52% for milk thistle seed extract. Antioxidant activity, calculated as TEAC values, ranged from 0.72 mmol/L for oat seed extract to 6.92 mmol/L for milk thistle seed extract. High correlations between polyphenol content and antioxidant activity expressed as EC50 values (r = 0.994), and as TEAC values (r = 0.992) in seed extracts were observed. These correlations indicate that the scavenging radical activity and antioxidant activity of seed extracts significantly depend on their total phenolic content.

dr inż. Paulina MALINOWSKA 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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