منابع مشابه
Hydrolyzable Polyureas Bearing Hindered Urea Bonds
Hydrolyzable polymers are widely used materials that have found numerous applications in biomedical, agricultural, plastic, and packaging industrials. They usually contain ester and other hydrolyzable bonds, such as anhydride, acetal, ketal, or imine, in their backbone structures. Here, we report the first design of hydrolyzable polyureas bearing dynamic hindered urea bonds (HUBs) that can reve...
متن کاملNatural selection in Potentilla glandulosa revisited
Clausen, Keck and Hiesey’s studies of clonal transplants during the 1930s and 1940s are famous for demonstrating ecotypic variation. Less appreciated are their studies on natural selection, even though at the time there was little hard evidence of its operation in nature. Here we present new analyses of their study of natural selection in Potentilla (Clausen et al., 1940; Clausen and Hiesey, 19...
متن کاملAnti-Inflammatory Effects of Agrimoniin-Enriched Fractions of Potentilla erecta.
Potentilla erecta (PE) is a small herbaceous plant with four yellow petals belonging to the Rosaceae family. The rhizome of PE has traditionally been used as an antidiarrheal, hemostatic and antihemorrhoidal remedy. PE contains up to 20% tannins and 5% ellagitannins, mainly agrimoniin. Agrimoniin is a hydrolyzable tannin that is a potent radical scavenger. In this study we tested the anti-infla...
متن کاملPhytochemical profiles, antioxidant and antimicrobial activities of three Potentilla species
BACKGROUND Extracts from Potentilla species have been applied in traditional medicine and exhibit antioxidant, hypoglycemic, anti-inflammatory, antitumor and anti-ulcerogenic properties, but little has been known about the diversity of phytochemistry and pharmacology on this genus. This study investigated and compared the phytochemical profiles, antioxidant and antimicrobial activities of leaf ...
متن کاملAntioxidant and anti-inflammatory activity of Potentilla reptans L.
Potentilla species have been used in traditional medicine in the treatment of different ailment, disease or malady. Potentilla reptans (P. reptans) has been scarcely studied. The aim of this study was to test antioxidant and anti-inflammatory activity of P. reptans aerial part and rhizome. DPPH assay was used to measure antioxidant activity of aqueous plant extracts. Anti-inflammatory effect wa...
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ژورنال
عنوان ژورنال: Chemistry of Natural Compounds
سال: 1974
ISSN: 0009-3130,1573-8388
DOI: 10.1007/bf00568280