bistorta/antiossidante

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12 risultati

5, 6-Dihydropyranobenzopyrone: a previously undetermined antioxidant isolated from Polygonum amplexicaule.

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OBJECTIVE To study the chemical constituents and their bioactivity of Polygonum amplexicaule. METHODS The isolation of compounds was achieved by chromatographic techniques and structure of the isolates was established by UV, IR, HRESI-MS and NMR including 1D and 2D

Amplexicine, an antioxidant flavan-3-ol from Polygonum amplexicaule.

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Bioassay guided fractionation of an ethanolic extract of Polygonum amplexicaule D. Don led to the isolation of amplexicine, a new flavan-3-ol (1), along with khellactone (2). The structure of the isolates was established by UV, IR, HRESI/MS and NMR, including 1D and 2D experiments. Compound 1

Evaluation of antioxidant potential and HPLC based identification of phenolics in Polygonum amplexicaule extract and its fractions.

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There is a growing interest for the plant-based medicines in pharmaceutical industry. Plant derived Antioxidants have gained huge importance regarding their medicinal value. The present study was designed to establish pharmaceutical value of Polygonum amplexicaule for their antioxidant activity

Bioactivity evaluation and HPLC UV-VIS based quantification of antioxidant secondary metabolites from extract and fractions of Bistorta amplexicaulis rhizome.

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Bistorta amplexicaulis is a popular medicinal plant and reported as rich source of antioxidant compounds. The present study was designed for antioxidant and anticancer potential of polarity based fractions of B. amplexicaulis and its correlation to the secondary metabolites quantified by

[Ability of catechin to eliminate O2-* and *OH].

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OBJECTIVE To investigate the eliminating ability of catechin to eliminate O2-* and *OH. METHODS The ability of catechin to clear away O2-* and *OH was respectively measured by faintness chemiluminescence and spin trapping assay. RESULTS IC50 that catechin eliminated O2-* and *OH was 6.16, 0.59 g/mL

Altitudinal variation of flavonoid content in the leaves of Fallopia japonica and the needles of Larix kaempferi on Mt. Fuji.

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Ultraviolet-B radiation is harmful to plants, and its intensity increases at altitude. So plants growing at high altitude possess UV protection systems. Flavonoid is known as a major UV protectant because it absorbs UV radiation and scavenges UV-induced free radicals in plant tissues. Japanese

Biosynthesis of zinc oxide nanoparticles using anjbar (root of Persicaria bistorta) extract and their cytotoxic effects on human breast cancer cell line (MCF-7).

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Biosynthesis of nanoparticles (NPs) using biomass is now one of the best methods for synthesising NPs due to their nontoxic and biocompatibility. Plants are the best choice among all biomass to synthesise large-scale NPs. The objectives of this study were to synthesise zinc oxide nanoparticles

In Vitro Comparison of the Bioactivities of Japanese and Bohemian Knotweed Ethanol Extracts.

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Knotweed is a flowering plant that is native to temperate and subtropical regions in the northern hemisphere. We evaluated Japanese (Reynoutriajaponica Houtt.) and Bohemian (Fallopiaxbohemica) knotweed rhizome and flower ethanol extracts and compared them in terms

Resveratrol and Depression in Animal Models: A Systematic Review of the Biological Mechanisms.

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Depression is currently treated by pharmacotherapies that can elicit debilitating side effects for patients. Novel treatment options with limited side effects are currently being researched. Resveratrol is a polyphenol and phytoalexin found in the skins of grapes, red wine, Japanese knotweed, and

Biological activity of piceatannol: leaving the shadow of resveratrol.

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Resveratrol (3,4',5-trans-trihydroxystilbene), a naturally occurring stilbene, is considered to have a number of beneficial effects, including anticancer, anti-aethrogenic, anti-oxidative, anti-inflammatory, anti-microbial and estrogenic activity. Piceatannol (3, 3', 4, 5'-trans-trihydroxystilbene),

The pharmacology, toxicology and therapeutic potential of anthraquinone derivative emodin

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Emodin (1, 3, 8-trihydroxy-6-methylanthraquinone) is a derived anthraquinone compound extracted from roots and barks of pharmaceutical plants, including Rheum palmatum, Aloe vera, Giant knotweed, Polygonum multiflorum and Polygonum cuspidatum. The review aims to provide a scientific summary of

Separation of polyphenolic compounds extracted from plant matrices using capillary electrophoresis.

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Phenolic compounds constitute a large group of secondary plant products whose chemical structure may range from quite simple compounds to highly polymerized substances. The polyphenols content have been investigated in the alcoholic extract of the fruits of three different plants: sweet gale, sea

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