rosa/antioxidant

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Antioxidant Properties and Phenolic Compounds of Vitamin C-Rich Juices.

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Many studies have shown that bioactive compounds, for example, polyphenols, and so on can play an important role in reducing oxidative stress and protect against various diseases. The sources of these compounds in the human diet include mainly fruit and good quality fruit juices, which may contain

Flavonoids and antioxidant activity of Rosa agrestis leaves.

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In this work we report the isolation and characterisation of seven flavonoids, the levels of total phenolics, flavonoids and proanthocyanidins, and the antioxidant activity of the leaf extract of Rosa agrestis Savi (Rosaceae). The results showed that the R. agrestis leaf extract exhibited

Protective effect of two essential oils isolated from Rosa damascena Mill. and Lavandula angustifolia Mill, and two classic antioxidants against L-dopa oxidative toxicity induced in healthy mice.

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Levodopa (L-dopa) is a "gold standard" and most effective symptomatic agent in the Parkinson's disease (PD) treatment. The several treatments have been developed in an attempt to improve PD treatment, but most patients were still levodopa dependent. The issue of toxicity was raised in vitro studies,

The neuroprotective and antioxidant profiles of selenium-containing polysaccharides from the fruit of Rosa laevigata.

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Rosa laevigata fruit has been known as a functional foodstuff for a long time. Recently, increasing attention has been given to polysaccharides from R. laevigata fruit due to their numerous medicinal and nutritional properties. In this study, a rapid and effective approach for the extraction and

Determination of antioxidant effects of some plant species wild growing in Turkey.

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In this study, the antioxidant activity of 50% aqueous methanol extracts of Crataegus tanacetifolia (Lam.) Pers, Crataegus bornmuelleri Zaberi, Crataegus orientalis Pall. ex M.Bieb. var. orientalis, Crataegus szovitsii Pojark, Crataegus curvisepala Lindm., Crataegus monogyna Jacq. subsp. monogyna,

Oxidative DNA damage preventive activity and antioxidant potential of plants used in Unani system of medicine.

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BACKGROUND There is increasing recognition that many of today's diseases are due to the "oxidative stress" that results from an imbalance between the formation and neutralization of reactive molecules such as reactive oxygen species (ROS) and reactive nitrogen species (RNS), which can be removed

A new flavonoid glycoside and other chemical constituents from leaves of Rosa davurica and their antioxidant activity.

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A 70% ethanol extract from the leaves of Rosa davurica showed significant antioxidant activity in both superoxide anion and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical-scavenging assays. Phytochemical study of this extract resulted in the isolation of eight compounds, including a new flavonoid

Bioactive compounds and antioxidant activity of four rose hip species from spontaneous Sicilian flora.

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The morphological characteristics and health-promoting components (anthocyanins, phenolic compounds, carotenoids, and ascorbic acid) together with the in-vitro antioxidant capacity of hips collected from four rose species (Rosa canina, R. corymbifera, R. micrantha, and R. sempervirens) growing in

[Extraction of the antioxidative substances from Chinese rose and its antioxidative effect on lard].

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The antioxidative effect of extracts from Chinese rose was measured with Na2S2O3-I2 titrimetric method by using lard as substrates. It was found that the antioxidative activities of the Chinese rose extracts retrieved by 95% ethanol solution were the highest, and the activities were strengthened

Enhancing the Antioxidant Activities of Wines by Addition of White Rose Extract.

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White rose petal extract (WRE) contains large amounts of phenolic compounds and is considered edible. In this study, red and white wines were prepared by the addition of WRE (0.10% or 0.25% (w/v)), followed by fermentation at 25°C for 15 days. The fermentation profiles, colors, sensory test results,

Antioxidative activities of white rose flower extract and pharmaceutical advantages of its hexane fraction via free radical scavenging effects.

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In this study, we determined the antioxidant activities of two different solvent fractions(butanol and hexane) obtained from white Rosa rugosa flowers by employing various assays such as 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH), 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS)

Antioxidant and antimicrobial activities of native Rosa sp. from British Columbia, Canada.

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Indigenous traditional knowledge and western science have revealed the potential for significant nutritional and therapeutic benefits among natural antioxidants. We investigated antioxidant and antimicrobial activity of rose hip extracts (Rosa nutkana, Rosa pisocarpa and Rosa woodsii) from wild

The physicochemical properties and antioxidant capacities of commercial and homemade Greek vinegars.

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Due to its high content of antioxidant compounds, vinegar can be considered an excellent source of health promoting compounds. The aim of this study was to compare the physicochemical composition and antioxidant capacity of eighteen vinegars made from red and white wine, apple, rose

ANTIOXIDANT ACTIVITY AND A-AMYLASE INHIBITORY POTENTIAL OF ROSA CANINA L.

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BACKGROUND Diabetes mellitus is one of the most common endocrinal disorders and medicinal plants continue to play an important role in the management of this disease. In this study, Rosa canina was investigated for the antioxidant and α-amylase inhibition activities. METHODS Methanolic extract of

Antioxidant screening of medicinal herbal teas.

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Herbal tea consumption is deeply and widely rooted amongst South-American populations. In view of the involvement of oxygen- and nitrogen-reactive species in the ethiogenesis of several diseases, the antioxidant properties of some of the herbal teas most commonly consumed in the southern regions was

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