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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">vestib</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной  академии наук Беларуси. Серия биологических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Biological Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1029-8940</issn><issn pub-type="epub">2524-230X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1029-8940-2020-65-4-402-411</article-id><article-id custom-type="elpub" pub-id-type="custom">vestib-704</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Влияние параметров экстракции на выход флавоноидов из листьев воробейника лекарственного (Lithospermum officinale L.)</article-title><trans-title-group xml:lang="en"><trans-title>The influence of extraction parameters on the output of flavonoids from littlewale (Lithospermum officinale L.)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Адамцевич</surname><given-names>Н. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Adamtsevich</surname><given-names>N. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адамцевич Наталья Юрьевна - аспирант.</p><p>Ул. Свердлова, 13а, 220006, Минск</p></bio><bio xml:lang="en"><p>Natallia Yu. Adamtsevich - Postgraduate student.</p><p>13a, Sverdlov Str., 220006, Minsk</p></bio><email xlink:type="simple">natallia.adamtsevich@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Болтовский</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Boltovskiy</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Болтовский Валерий Станиславович - доктор технических наук, доцент, профессор.</p></bio><bio xml:lang="en"><p>Valeriy S. Boltovskiy - D. Sc. (Engineering), Assistant Professor, Professor.</p><p>13a, Sverdlov Str., 220006, Minsk</p></bio><email xlink:type="simple">v-boltovsky@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Титок</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Titok</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Титок Владимир Владимирович - член-корреспондент, доктор биологических наук, доцент, директор.</p><p>Ул. Сурганова, 2в, 220012, Минск</p></bio><bio xml:lang="en"><p>Vladimir V. Titok - Corresponding Member, D. Sc. (Biol.), Assistant Professor, Director.</p><p>2v, Surganov Str., 220012, Minsk</p></bio><email xlink:type="simple">V.Titok@cbg.org.by</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный технологический университет</institution></aff><aff xml:lang="en"><institution>Belarusian State Technological University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Центральный ботанический сад, НАН Беларуси</institution></aff><aff xml:lang="en"><institution>Central Botanical Garden, National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>05</day><month>11</month><year>2020</year></pub-date><volume>65</volume><issue>4</issue><fpage>402</fpage><lpage>411</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Адамцевич Н.Ю., Болтовский В.С., Титок В.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Адамцевич Н.Ю., Болтовский В.С., Титок В.В.</copyright-holder><copyright-holder xml:lang="en">Adamtsevich N.Y., Boltovskiy V.S., Titok V.V.</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://vestibio.belnauka.by/jour/article/view/704">https://vestibio.belnauka.by/jour/article/view/704</self-uri><abstract><p>Воробейник лекарственный (Lithospermum officinale L.) - ценное лекарственное растение, которое используется в народной медицине еще с давних времен в качестве мочегонного, слабительного, обезболивающего, противопростудного и противовоспалительного средства. Одним из наиболее распространенных классов биологически активных веществ растительного происхождения являются флавоноиды. В листьях воробейника лекарственного содержится изокверцитрин - флавоноид, который обладает регенерирующим действием.</p><p>В данной работе приведены результаты изучения влияния параметров экстракции (концентрации этилового спирта, температуры, соотношения массы сырья к объему экстрагента, продолжительности, кратности) на выход флавоноидов из листьев воробейника лекарственного. С помощью ортогонального центрального композиционного планирования получена зависимость, которая описывает влияние температуры и продолжительности процесса экстракции на эффективность извлечения флавоноидов из листьев воробейника лекарственного. Установлено, что максимальный выход целевых компонентов, который составляет более 2 %, достигается при следующих параметрах процесса экстракции: экстрагент - 50 %-ный этиловый спирт, соотношение массы сырья к объему экстрагента - 1:20, температура - 65-70 °С, продолжительность - 35-45 мин. Экстрагирование сырья достаточно проводить в режиме однократной экстракции.</p></abstract><trans-abstract xml:lang="en"><p>Littlewale (Lithospermum officinale L.) is a valuable medicinal plant that has been used in folk medicine since ancient times as a diuretic, laxative, analgesic, anti-cold and anti-inflammatory agent. One of the most common classes of biologically active substances of plant origin are flavonoids. The leaves of the littlewale contain isoquercitrin, a flavonoid that has a regenerating effect.</p><p>This article presents the results of a study of the influence of extraction parameters (ethanol concentration, temperature, ratio of the mass of plant materials to the volume of extractant, duration, multiplicity) on the output of flavonoids from the leaves of the littlewale. Using the orthogonal central compositional planning, a dependence is obtained that describes the influence of temperature and the duration of the extraction process on the efficiency of extracting flavonoids from the leaves of the littlewale. It was found that the maximum yield of the target components, which is more than 2 %, is achieved with the following parameters of the extraction process: extractant - 50 % ethyl alcohol, the ratio of the mass of raw materials to the volume of extractant is 1:20, temperature - 65-70 °С, duration - 35-45 minutes. It is enough to conduct a single extraction of plant materials.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Lithospermum officinale L.</kwd><kwd>флавоноиды</kwd><kwd>изокверцитрин</kwd><kwd>экстракция</kwd><kwd>спектрофотометрия</kwd><kwd>оптимизация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Lithospermum officinale L.</kwd><kwd>flavonoids</kwd><kwd>isoquercitrin</kwd><kwd>extraction</kwd><kwd>spectrophotometry</kwd><kwd>optimization</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Куркина, А. В. Флавоноиды фармакопейных растений / А. В. Куркина. - Самара : ГБОУ ВПО СамГМУ Минздравсоцразвития России, 2012. - 290 с.</mixed-citation><mixed-citation xml:lang="en">Kurkina A. V. Flavonoids of pharmacopeia plants: monograph. Samara, Samara State Medical University, 2012. 232 p. 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