Abstract The majority of energy storage devices like batteries, fuel cells or electrolyzers require heterogeneous electrodes. Immobilization redox‐active organic molecules by a polymeric approach seems to be promising route towards electrodes for electrocatalytic in batteries. Although numerous reports on synthesis and application new poly‐anthraquinones exist, universal guideline tool selectio...

Cissus populnea has been used locally to treat many ailments such as venereal, stomach and skin infections; and also used as laxative or purgative. Economically it has been used as binder in food and in lining dye pits. This work aims at determining the type of anthraquinones from the stem bark of C. populnea which might be a potential source of drugs (laxative/cathartic) using thin layer chram...

Pentas micrantha is used in the East African indigenous medicine to treat malaria. In the first investigation of this plant, the crude methanol root extract showed moderate antiplasmodial activity against the W2- (3.37 μg/mL) and D6-strains (4.00 μg/mL) of Plasmodium falciparum and low cytotoxicity (>450 μg/mL, MCF-7 cell line). Chromatographic separation of the extract yielded nine anthraquino...

Microscopy and phytochemical screening of the leaves of Pandanus candelabrum were studied. Microscopical examination of the leaves showed paracytic stomata which are more numerous on the lower surface with prisms of calcium oxalate cystals. Preliminary phytochemical screening of the 80 % ethanol extract of the leaves revealed the presence of anthraquinones, saponins and traces of tannins and al...

It was demonstrated that anthraquinone-rich extracts, obtained from the phototoxic vegetal species Heterophyllaea pustulata Hook f. (Rubiaceae), exhibited bacteriostatic activity on Micrococcus luteus ATCC 9341, selectively inhibiting both oxacillin-sensitive and resistant Staphylococcus aureus, and antifungal activity against important opportunist microorganisms and against those involved in s...

Sequential extraction using a cold maceration method and column chromatographic separation of the roots Kniphofia insignis headed to isolation three anthraquinones: one monomeric anthraquinone (1) two dimeric anthraquinones (2 3). It was further purified by Sephadex LH-20 recrystallized. The structures these compounds were established based on spectroscopic analyses including NMR (1H-NMR 13C-NM...

Rhubarb, a famous traditional Chinese medicine, shows wide range of physiological activities and pharmacological benefits. Rhubarb anthraquinones are perceived as the pharmacologically active compounds understanding metabolism them is crucial to assure safety effectiveness clinical application. In this study, pharmacokinetics, tissue distribution excretion five rhubarb (aloe-emodin, rhein, emod...

Rhubarb is one of the most ancient, commonly used and important herbs in Chinese medicine. The modern researches of rhubarb clarified the efficacies, ingredients and mechanisms in a more scientific and rigorous way. The main chemical compositions of rhubarb include anthraquinones, anthrones, stilbenes, tannins, polysaccharides etc. These compositions show extensive pharmacological activities in...