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Article
Effect of Quercetin and its Derivatives on the Excretory Function of Rat Kidneys
The optimal diuretic doses of quercetin and rutin (5 mg/kg) and dihydroquercetin and hyperoside (1 mg/kg) were determined in experiments on white rats with a single intragastric administration. The mechanism o...
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Article
Determination of Pinocembrin Content in Glycyrrhiza glabra L. Herbs by HPLC
A method for quantitative determination of pinocembrin in herb of licorice (Glycyrrhiza glabra L.) using high-performance liquid chromatography (HPLC) was developed. The content of the dominant flavonoid pinocemb...
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Article
Determination of the Cosmosiin Content in Yarrow (Achillea millefolium L.) Herb by HPLC
A method for the determination of cosmosiin in herb of yarrow (Achillea millefolium L.) using high performance liquid chromatography (HPLC) has been developed. The content of the dominant flavonoid cosmosiin (api...
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Article
Study of the Component Composition of Leaves of Species of the Genus Juglans L. by HPLC
Leaves of species of the genus Juglans L. of the Juglandaceae family hold promise as officinal medicinal plant materials whose preparations have an antimicrobial and general tonic effect. In our opinion, the cont...
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Article
Chemical Composition and Standardization of Nigella sativa L. Herb
Black cumin herb (Nigella sativa L.) was identified and standardized by analyzing the chemical composition and develo** methods for determination of the authenticity and flavonoid content as biologically active...
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Article
Sorption of Some Biologically Active Compounds of Plant Origin on Metal-Organic Frameworks
Results of screening studies of the sorption of naturally occurring biologically active compounds (phenolcarboxylic acids, coumarins, flavonoids, and alkaloids) on aluminum- and iron-containing metal-organic f...
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Article
Method of Quantitative Determination of the Total Flavonoid Content in Leaves of Giant Cephalaria
Cynaroside (luteolin 7-O-β-D-glucopyranoside) was isolated for the first time from leaves of Cephalaria gigantea (Ledeb.) Bobrov (giant cephalaria) cultivated in Samara region and was identified using UV, PMR, an...
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Article
Focused Ion Beams and Complementary Techniques to Study the Silvering of Ancient Roman Coins
Two ancient Roman silver coins dating back to the 3rd–4th century AD are studied. A set of modern micro- and nondestructive analytical techniques, namely, a focused ion beam, scanning electron microscopy, ener...
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Article
Flavonoids from the Aerial Part of Tagetes patula (Variety Mandarin)
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Article
Diuretic Activity of Flavonoids and Dense Extract of Spreading Marigold Flowers
Spreading marigold (Tagetes patula L.) is a valuable source of biologically active compounds, including flavonoids. The aim of the present work was to study the diuretic activity of a dense extract from spreading...
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Article
Phenylpropanoids and Phenylethanoids from Leaves of Betula verrucosa
The new phenylpropanoid p-dihydrocoumaric acid 9-O-β-D-glucopyranoside, which we called phloretoside, was isolated from leaves of Betula verrucosa Ehrh. Its structure was elucidated using 1H NMR and 13C NMR spect...
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Article
Diuretic and Neurotropic Activity of Oreganol A, a Component of Oregano
Oregano (Origanum vulgare L.) is a valuable source of biologically active substances, including phenolic compounds. The aim of this study was the isolation of 3′,4′-dihydroxybenzylprotocatechoic acid 4′-O-β-D-glu...
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Article
Development of a Method of Quantitative Determination of Total Flavonoids in the Leaves of Myrtus communis
Myrtle (Myrtus communis L.) is an evergreen plant, a small tree or shrub endemic to the Mediterranean region. In the area of growth since ancient times, various parts (berries, fruits and leaves) of myrtle have b...
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Article
Development of Quantitative Determination Methods for Total Flavonoids in Tagetes patula L. Herbs
French marigold (Tagetes patula L.) is a valuable source of biologically active compounds, including flavonoids. The study was aimed at develo** a quantitative determination method for total flavonoid content (...
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Article
Methodological Approaches to Standardization of Rhizomes and Roots of Eleutherococcus senticosus
Methodological approaches to the analysis of biologically active compounds in rhizomes and roots of Eleutherococcus senticosus (Rupr. et Maxim.) Maxim. [syn. Acanthopanax senticosus (Rupr. et Maxim.) Harms] were ...
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Article
Flavonoids and Naphthoquinones from Leaves of Juglans nigra
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Article
HPLC Determination of Myricitrin in Juglans nigra L. Bark
An HPLC method for quantitative determination of myricitrin in black walnut (Julgans nigra L.) bark was developed. The content of the dominant flavonoid myricitrin (myricetin-3-O-α-L-rhamnopyranoside) in J. nigra
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Article
Fatty Acid Profile and Antioxidant Activity of Nigella Sativa Fatty Oil
The chemical composition of Nigella sativa L. (black cumin) fatty oil was studied by gas chromatography with mass-selective detection in a search for promising antioxidant agents among edible vegetable oils with ...
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Article
Flavonoids and Naphthoquinones from Juglans nigra Bark
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Article
Current Aspects of Standardization of Rhodiola rosea L. Rhizomes and Roots
Methodological approaches to the analysis of biologically active compounds in rhizomes and roots of Rhodiola rosea L. are substantiated. An HPLC method for quantitative determination of rosavin and salidroside, t...
