Methods for quantitative determination of total flavonoids in Quercus robur L. buds
- Authors: Ryabov N.A.1, Ryzhov V.M.1, Kurkin V.A.1
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Affiliations:
- Samara State Medical University
- Issue: Vol 9, No 5 (2021)
- Pages: 356-366
- Section: Articles
- URL: https://ogarev-online.ru/2307-9266/article/view/111702
- DOI: https://doi.org/10.19163/2307-9266-2021-9-5-356-366
- ID: 111702
Cite item
Abstract
Currently, the actual task of modern pharmacy is to study the chemical composition and pharmacological properties of plant objects. Within the framework of this concept, it seems interesting to study Quercus robur L. buds. One of the promising groups of biologically active compounds of Quercus robur L. buds are flavonoids. This group of substances has a wide range of a pharmacological activity, which is significant in the creation of new medicines based on medicinal plant raw materials.
The aim of the article was to work out methods for quantitative determination of total flavonoids in Quercus robur l. buds.
Materials and methods. The research materials were aqueous-alcoholic extracts from Quercus robur L. buds with 70% ethyl alcohol which were analyzed by differential UV spectrophotometry on spectrophotometer “SF 2000” (Russia).
Results. The methods for quantitative determination of total flavonoids in Quercus robur L. buds by differential UV spectrophotometry, has been developed using a standard sample of cynaroside at the analytical wavelength of 400 nm. The optimum parameters for the extraction of total flavonoids from Quercus robur L. buds have been determined. They are: the optimum extractant is 70% ethyl alcohol; the “raw material-extractant” ratio is 1:50; the extraction time is 120 min, the degree of atomization is 2 mm.
The content of total flavonoids for Quercus robur L. buds has been determined; it varies from 0.27%±0.01 to 0.44%±0.02. These results make possible to recommend the content of total flavonoids for this type of raw materials not less than 0.25% as a lower limit.
Conclusion. The data obtained in the course of the experiment, makes it possible to conclude that a further study of Quercus robur L. buds is promising, and it also contributes to the implementation of medicinal plant raw materials “Quercus robur L. buds” in the State Pharmacopoeia (Russia).
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##article.viewOnOriginalSite##About the authors
Nikolay A. Ryabov
Samara State Medical University
Author for correspondence.
Email: ryabov.nikolay.2014@mail.ru
ORCID iD: 0000-0002-1332-953X
Postgraduate student of the Department of Pharmacognosy with Botany and the basics of Phytotherapy
Russian Federation, 89, Chapayevskaya St., Samara, 443099Vitaly M. Ryzhov
Samara State Medical University
Email: lavr_rvm@mail.ru
ORCID iD: 0000-0002-8399-9328
ndidate of Sciences (Pharmacy), Associate Professor of the Department of Pharmacognosy with Botany and the basics of Phytotherapy
Russian Federation, 89, Chapayevskaya St., Samara, 443099Vladimir A. Kurkin
Samara State Medical University
Email: kurkinvladimir@yandex.ru
ORCID iD: 0000-0002-7513-9352
Doctor of Sciences (Pharmacy), Professor, Head of the Department of Pharmacognosy with Botany and the basics of Phytotherapy
Russian Federation, 89, Chapayevskaya St., Samara, 443099References
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