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rudbeckia purpurea/antioxidant
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5 results
Antioxidant activity of medicinal plant polysaccharides.
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Eleven polysaccharides have been isolated from the leaves of Arctium lappa var. herkules, Aloe barbadensis, Althaea officinalis var. robusta, Plantago lanceolata var. libor, aerial parts and roots of Rudbeckia fulgida var. sullivantii, stems of Mahonia aquifolium, and peach-tree (Prunus persica) gum
Studies on Chemical Composition and Antioxidant Activity of Rudbeckia triloba.
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The paper describes the physicochemical studies made on the decorative plant, Rudbeckia triloba (Asteraceae). For this purpose, essential oil, infusion, decoction, and hydroalcoholic macerate obtained from different aerial parts of Rudbeckia triloba were analyzed. The main phytochemical constituents
Evidence-based medicinal value of Rudbeckia hirta L. flowers.
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A phytochemical investigation on the 5-lipoxygenase (5-LOX) inhibitory methanolic extract of Rudbeckia hirta L. flowers yielded 10 phenolic metabolites, including three phenolic acids, two phenolic acid esters, four flavonol glycosides and a trimethylated flavonol. The structures of the isolated
Seasonal profiles of leaf ascorbic acid content and redox state in ozone-sensitive wildflowers.
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Cutleaf coneflower (Rudbeckia laciniata L.), crown-beard (Verbesina occidentalis Walt.), and tall milkweed (Asclepias exaltata L.) are wildflower species native to Great Smoky Mountains National Park (U.S.A.). Natural populations of each species were analyzed for leaf ascorbic acid (AA) and
Profiling the chlorogenic acids of Rudbeckia hirta, Helianthus tuberosus, Carlina acaulis and Symphyotrichum novae-angliae leaves by LC-MS(n).
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BACKGROUND
Chlorogenic acids (CGAs) are a family of esters formed between quinic acid and certain cinnamic acids, most commonly caffeic, p-coumaric and ferulic acid. They show a variety of biological activities like antioxidant, anti-inflammatory, anti-HIV, anti-HBV and inhibition of mutagenesis and
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