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Srovnání antioxidačních vlastností a absorbce UV záření u extraktů vybraných bylin, Spiruliny a jejich směsí
Farinasso, Giulia
This study aimed to compare the antioxidant properties and UV radiation absorption of se-lected herbal extracts, blue-green algae spirulina extract and their mixtures. Extracts were ob-tained by ultrasound assisted extraction. The total polyphenol (TPC) and flavonoid contents (TFC) were determined, and the Trolox equivalent antioxidant capacity (TEAC) was meas-ured. The best antioxidant properties has been showed by C. officinalis individual extract and its mixture with spirulina. Additionally, the UV-absorbing substances at 355 nm were quanti-fied. The extracts from C. officinalis and S. nigra were further analysed for their rutin content by HPLC-DAD. The rutin content in S. nigra and C. officinalis extracts was found to be 1935,97 ± 98,39 μg.g-1 and 233,035 ± 8,839 μg.g-1 of dry weight of flos, respectively. The highest content of phenolic compounds was found in the S. nigra extract, and the highest total antioxidant capacity was determined for the C. officinalis extract. Pearson's correlation re-vealed that the overall antioxidant capacity and UV absorption results were significantly cor-related with the total phenolic compound content only for the elderflower extract. The syner-gistic effect of the herbs used in combination with spirulina was evaluated.
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