G. L. Ryzhova

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Black birch fungus (Inonotus obliquusf sterillis, known in Russia as "chaga") is used in folk medicine for the treatment of gastrointestinal tract disorders. Since 1955, a dense extract of this fungus has been produced on the commercial level and used in medical practice as the drug befungin. The purpose of this work was to study the chemical composition(More)
The Chernobyl accident resulted in environmental radionuclide pollution in many areas, including the Dnepr river. The water and fish of the Kakhovsk Water Reservoir were under study and tested for 90Sr and 137Cs. It was found that the content of 137Cs achieved pre-accident levels and that of 90Sr was 4-6 times higher than that prior to the accident. The(More)
Determination of vitamins in various objects (biological media, food products, multivitamin preparations, etc.) is a currently important practical task. A large number of investigations devoted to the analysis of water-soluble and fat-soluble vitamins [1, 2] in biological objects [3] and drugs [4] were performed by the method of reverse-phase HPLC. The(More)
In the extraction of eleutherococcus, mixtures of water and alcohol and methyl and ethyl alcohols are usedas solvents. The methanolic extracts are used only in scientific investigations. Aqueous ethanolicextracts are contraindicated under the conditions of thef!ght against alcoholism and in the treatment of youngpatients. The main disadvantage of aqueous(More)
The task of development of new and refined methods for monitoring the activity of medicinal preparations is especially important with respect to compounds obtained from raw materials of animal origin, because substances of this type usually exhibit a considerable scatter of characteristics from one batch to another. One of the parameters used for biological(More)
Isolation of artemisinin from Artemisia annua L. and its quantification by the HPLC-MS method are considered. Different extraction methods were used for the isolation of artemisinin: maceration, ultrasonic and subcritical CO2-extraction. The component content of the CO2- and hexane extracts was studied by the GC-MS method.
As is known, the fruits of sea buckthorn are used for the production of oil and juice. The pharmacological activity of preparations based on the buckthorn oil is due to the biologically active substances, including carotinoids, sterols, etc., present in the fruits [1-4] . The existing technologies of buckthorn processing are based on displacement of the(More)
Antioxidants exhibiting hydrophobic properties can be quantitatively determined by methods based on hydrocarbon oxidation models. This problem was reviewed in a number of papers and monographs [1 – 4]. At the same time, the task of determining antioxidants in aqueous media is still incompletely solved. Indeed, methods employing models of free-radical(More)
Triglycerides, as well as fatty acids entering into their composition, possess a combination of pharmacological properties producing antitoxic and radioprotector action [1]. Some of these fatty acids, being among the principal components of biological objects of both plant and animal origin, are essential nutrition components and produce various therapeutic(More)