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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">pmedpharm</journal-id><journal-title-group><journal-title xml:lang="ru">Фармация и фармакология</journal-title><trans-title-group xml:lang="en"><trans-title>Pharmacy &amp; Pharmacology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2307-9266</issn><issn pub-type="epub">2413-2241</issn><publisher><publisher-name>Pyatigorsk Medical and Pharmaceutical Institute - branch of Volgograd State Medical Univer</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.19163/2307-9266-2022-10-1-31-43</article-id><article-id custom-type="elpub" pub-id-type="custom">pmedpharm-1024</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФАРМАКОГНОЗИЯ, БОТАНИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHARMACOGNOSY, BOTANY</subject></subj-group></article-categories><title-group><article-title>ОСОБЕННОСТИ КОЛИЧЕСТВЕННОЙ ОЦЕНКИ СОДЕРЖАНИЯ ФЛАВОНОИДОВ В ПРЕПАРАТАХ КОРЫ ОРЕХА ЧЕРНОГО</article-title><trans-title-group xml:lang="en"><trans-title>FEATURES OF QUANTITATIVE ESTIMATION OF FLAVONOID CONTENT IN JUGLANS NIGRA L. BARKS PREPARATIONS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7513-9352</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Куркин</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurkin</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор фармацевтических наук, профессор, заведующий кафедрой фармакогнозии с ботаникой и основами фитотерапии</p><p>443099, Россия, г. Самара, ул. Чапаевская, д. 89</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Pharmacy), Professor, Head of the Department of Pharmacognosy with Botany and Basics of Phytotherapy</p><p>89, Chapaevskaya St., Samara, Russia, 443099</p></bio><email xlink:type="simple">v.a.kurkin@samsmu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1334-6046</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зименкина</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Zimenkina</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры фармакогнозии с ботаникой и основами фитотерапии</p><p>443099, Россия, г. Самара, ул. Чапаевская, д. 89</p></bio><bio xml:lang="en"><p>postgraduate student of the Department of Pharmacognosy with Botany and Basics of Phytotherapy</p><p>89, Chapaevskaya St., Samara, Russia, 443099</p></bio><email xlink:type="simple">n.i.zimenkina@samsmu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Самарский государственный медицинский университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>06</day><month>03</month><year>2022</year></pub-date><volume>10</volume><issue>1</issue><fpage>31</fpage><lpage>43</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Куркин В.А., Зименкина Н.И., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Куркин В.А., Зименкина Н.И.</copyright-holder><copyright-holder xml:lang="en">Kurkin V.A., Zimenkina N.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.pharmpharm.ru/jour/article/view/1024">https://www.pharmpharm.ru/jour/article/view/1024</self-uri><abstract><sec><title>Цель</title><p>Цель. Разработка методик количественного определения флавоноидов в препаратах коры ореха черного с помощью современных инструментальных методов анализа (спектрофотометрия, микроколоночная высокоэффективная жидкостная хроматография).</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Объектами исследования являлись настойка и сухой экстракт коры ореха черного (Juglans nigra L.), образцы которой были заготовлены в марте-апреле 2020 года на территории Ботанического сада ФГБОУ ВО СамГМУ Минздрава России (г. Самара); стандартные образцы мирицитрина, мирицетина. Регистрацию УФ-спектров проводили с помощью спектрофотометра «Specord®40» (Analytik Jena, Германия) методом дифференциальной спектрофотометрии. Хроматографический анализ осуществляли методом обращенно-фазовой ВЭЖХ на микроколоночном жидкостном хроматографе «Милихром-6» (НПАО «Научприбор», Россия).</p></sec><sec><title>Результаты</title><p>Результаты. Разработана методика количественного определения суммы флавоноидов в пересчете на мирицитрин в настойке и сухом экстракте коры ореха черного (Juglans nigra L.) с помощью метода дифференциальной спектрофотометрии. Установлено, что содержание суммы флавоноидов в настойке и сухом экстракте коры ореха черного составляет 0,84±0,07% и 12,38±0,24% (в пересчете на мирицитрин) соответственно. Ошибка единичного определения суммы флавоноидов в пересчете на мирицитрин в настойке и сухом экстракте коры ореха черного с доверительной вероятностью 95% составляет ±8,34% и ±2,10% соответственно.</p><p>Разработана методика количественного определения мирицитрина в настойке и сухом экстракте коры ореха черного (Juglans nigra L.) методом ВЭЖХ. Содержание доминирующего флавоноида – мирицитрина (мирицетин-3-O-α-L-рамнопиранозид) в настойке и сухом экстракте коры ореха черного составляет 0,42±0,03% и 8,45±0,24% соответственно. Ошибка единичного определения мирицитрина в настойке и сухом экстракте коры ореха черного с доверительной вероятностью 95% составляет ±7,14% и ±2,96% соответственно.</p></sec><sec><title>Заключение</title><p>Заключение. Разработанные методики количественного определения флавоноидов в настойке и сухом экстракте коры ореха черного могут быть использованы для решения вопросов стандартизации препаратов указанного лекарственного растительного сырья.</p></sec></abstract><trans-abstract xml:lang="en"><p>The aim of the research is the development of quantification procedures of flavonoids in Juglans nigra L. barks preparations using modern instrumental analytical techniques (spectrophotometry, high performance liquid chromatography).</p><sec><title>Materials and methods</title><p>Materials and methods. The subjects of research were tincture and dry extract of Juglans nigra L. bark, the samples of which were prepared in March and April 2020 in the Botanical Garden of Samara State Medical University (Samara); the standard samples (SS) of myricitrin, myricetin. The registration of the electronic spectra was carried out with a spectrophotometer «Specord 40» (Analytik Jena, Germany). The chromatographic analysis was carried out by the method of reversed-phase HPLC on a microcolumn liquid chromatograph “Milichrom-6” (NPAO “Nauchpribor”, Russia).</p></sec><sec><title>Results</title><p>Results. Using differential spectrophotometry, methods for the quantitative determination of the total amount of flavonoids in terms of myricitrin in the tincture and dry extract of Juglans nigra L. bark, has been developed. It has been determined that the content of the total amount of flavonoids in terms of myricitrin in the tincture and dry extract of Juglans nigra L., is 0.84±0.07% and 12.38±0.24%, respectively. The error of a single determination of the total amount of flavonoids in terms of myricitrin in the tincture and dry extract of Juglans nigra L. bark with a confidence probability of 95%, is ± 8.91% and ± 2.10%, respectively. Methods for the quantitative determination of myricitrin in the tincture and dry extract of Juglans nigra L. bark by HPLC has been developed. The content of the dominant flavonoid – myricitrin (myricetin-3-O-α-L-rhamnopyranoside) – in the tincture and dry extract of Juglans nigra L., was 0.42±0.06% and 8.45±0.24%, respectively. The error of the single determination of myricitrin in the tincture and dry extract of Juglans nigra L. with a confidence probability of 95% is ± 15.04% and ±2.96%, respectively.</p></sec><sec><title>Conclusion</title><p>Conclusion. The developed methods for the quantitative determination of flavonoids in the preparations of Juglans nigra L. barks L. can be used in solving the problems of standardization of Juglans nigra L. preparations.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>орех черный</kwd><kwd>Juglans nigra</kwd><kwd>кора</kwd><kwd>УФ-спектрофотометрия</kwd><kwd>ВЭЖХ</kwd><kwd>мирицитрин</kwd><kwd>флавоноиды</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Juglans nigra L.</kwd><kwd>bark</kwd><kwd>UV spectrophotometry</kwd><kwd>HPLC</kwd><kwd>myricitrin</kwd><kwd>flavonoids</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Данное исследование не имело какой-либо финансовой поддержки от сторонних организаций.</funding-statement><funding-statement xml:lang="en">This study didn’t receive any financial support from outside organizations.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Дайронас Ж.В. 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