Antioxidant properties of high quality black teas available on the e-commerce market

Antioxidant properties of high quality black teas available on the e-commerce market

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The aim of the publication was to determine the antioxidant activity of high-quality black teas from selected crops in India, Nepal, Rwanda and Turkey purchased on the e-commerce market.The color parameters were also marked in the CIE L*a*b* system and compared to the total polyphenols content.In addition, Lady using the results of principal components, an attempt was made to qualitatively classify analyzed teas.Regarding the parameters, the studied samples of tea could be classified as high-quality teas as an average content of polyphenols in all of the infusions ranged from 335,32 mg GAE/100 ml to 534,57 mg GAE/100 ml.

The highest content of polyphenols was determined in samples of tea from Rwanda and it was significantly higher in relation to others, particularly those from India and Nepal that were described as the highest quality products.Despite the moderate degree of the linear correlation between studied parameters, the linear relationship could not be determined with the statistically significant accuracy AEG CGB6130ACM 60cm Gas Cooker – Stainless Steel between these variables.