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The leaves of Camellia sinensis (L.) Kuntze are used to produce many types of tea; this variety results from the production process. The extracts, especially from teas rich in polyphenols, are also used in the prevention and treatment of certain diseases, in addition to their application for consumption. The aim of the study was to compare the antioxidant activity and total phenolic content in extracts...
Leaves from generative and vegetative shoots of Rubus capitulatus and R. kuleszae of Corylifolii section were investigated. The study was to demonstrate the variability of leaves of both types of shoots, and at the same time an examination on the contents of polyphenols and phenolic acids in their blades carried out. Selected blade traits, such as was: length, width, elongation, perimeter, dissection...
We used DPPH scavenging assays to study the antioxidant activity of three native Polish species of blackberry leaves (Rubus kuleszae Ziel., R. fabrimontanus (Sprib.) Sprib. and R. capitulatus Utsch.). All the studied extracts (methanolic, water, methanolic-water) showed high DPPH free radical scavenging activity (IC50 450.0–186.0 μg/ml). The most effective of the studied species was Rubus kuleszae...
Z metanolowego wyciągu z nasion Raphanus sativus L. subvar. radicula Pers. (Saxa) wyizolowano i zidentyfikowano siedem związków llawonoidowych. Związki te zidentyfikowano jako: kemferol, 7-glukozyd izoramnetyny, 7-arabinozyd kemferolu, 3-glukozyd izoramnetyny, 3-glukozyd kemferolu, 3,7-diglukozyd izoramnetyny i 3-glukozydo-7-arabinozyd kemferolu.
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