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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">vuzbiochemi</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Прикладная химия и биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Universities. Applied Chemistry and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-2925</issn><issn pub-type="epub">2500-1558</issn><publisher><publisher-name>ИРНИТУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/achb.1013</article-id><article-id custom-type="edn" pub-id-type="custom">HIAWFL</article-id><article-id custom-type="elpub" pub-id-type="custom">vuzbiochemi-1577</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>ФИЗИКО-ХИМИЧЕСКАЯ БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICOCHEMICAL BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Влияние ультразвуковой обработки бересты на выход бетулина при экстракции из Betula</article-title><trans-title-group xml:lang="en"><trans-title>Effect of ultrasonic treatment of birch bark on betulin yield in extraction from Betula</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7732-253X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сюй</surname><given-names>Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Xu</surname><given-names>H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сюй Хуавэй, аспирант, Высшая школа биотехнологий и пищевых производств</p><p>195251, г. Санкт-Петербург, внутригородское муниципальное образование муниципальный округ Академический, ул. Политехническая, 29б</p></bio><bio xml:lang="en"><p>Huawei Xu, Postgraduate Student, Graduate School of Biotechnology and Food Science</p><p>12b, Politekhnicheskaya St., Akademicheskii municipal district, St. Petersburg, 195251</p></bio><email xlink:type="simple">xuhuawei666@mail.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/0000-0001-9275-7913</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Базарнова</surname><given-names>Ю. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Bazarnova</surname><given-names>Ju. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Базарнова Юлия Генриховна, д.т.н., профессор, директор Высшей школы биотехнологий и пищевых производств</p><p>195251, г. Санкт-Петербург, внутригородское муниципальное образование муниципальный округ Академический, ул. Политехническая, 29б</p></bio><bio xml:lang="en"><p>Julia G. Bazarnova, Dr. Sci. (Engineering), Director of Graduate School of Biotechnology and Food Science</p><p>12b, Politekhnicheskaya St., Akademicheskii municipal district, St. Petersburg, 195251</p></bio><email xlink:type="simple">jbazarnova@spbstu.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/0009-0005-0673-8449</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Балабаев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Balabaev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Балабаев Алексей Александрович, ассистент, Высшая школа биотехнологий и пищевых производств</p><p>195251, г. Санкт-Петербург, внутригородское муниципальное образование муниципальный округ Академический, ул. Политехническая, 29б</p></bio><bio xml:lang="en"><p>Alexey A. Balabaev, Assistant Teacher, Graduate School of Biotechnology and Food Science</p><p>12b, Politekhnicheskaya St., Akademicheskii municipal district, St. Petersburg, 195251</p></bio><email xlink:type="simple">balabaev-alexey97@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский политехнический университет Петра Великого</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Peter the Great St. Petersburg Polytechnic University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>16</day><month>12</month><year>2025</year></pub-date><volume>15</volume><issue>4</issue><fpage>487</fpage><lpage>494</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сюй Х., Базарнова Ю.Г., Балабаев А.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Сюй Х., Базарнова Ю.Г., Балабаев А.А.</copyright-holder><copyright-holder xml:lang="en">Xu H., Bazarnova J.G., Balabaev A.A.</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://vuzbiochemi.elpub.ru/jour/article/view/1577">https://vuzbiochemi.elpub.ru/jour/article/view/1577</self-uri><abstract><p>Бетулин представляет собой природное пентациклическое тритерпеноидное соединение, обладающее широким спектром биологической активности. Промышленное использование бетулина в качестве фармацевтической субстанции требует решения нескольких ключевых задач – интенсификации процесса извлечения из растительного сырья и увеличения его биодоступности. Целью данной работы являлось исследование влияния предварительной ультразвуковой обработки измельченной бересты на эффективность последующей экстракции и характеристики целевого продукта. Результаты эксперимента показывают, что оптимизация мощности ультразвукового воздействия в диапазоне 250–300 Вт приводит к повышению выхода экстрактивных вещества до 37,0%, а после проведения этапа очистки от примесей выход кристаллического целевого продукта (бетулина) увеличивается на 14,9% по сравнению с контрольным образцом (без ультразвуковой обработки фитомассы), что в относительных величинах составляет превышение на 43%. Комплексный анализ чистоты полученного соединения (тонкослойная хроматография, инфракрасная спектроскопия, температура плавления 257–259 °C) подтвердил высокую эффективность предложенной методики очистки от сопутствующих примесей и сохранение структурной целостности целевого вещества. Таким образом, применение технологии жидкостной экстракции с ультразвуковой гомогенизацией фитомассы бересты позволяет увеличить выход целевого продукта с высокой степенью чистоты, а также сократить расход сырья и экстрагента. Указанные преимущества вносят существенный вклад в ресурсосбережение и обосновывают высокую технологическую и экономическую целесообразность масштабирования данного процесса.</p></abstract><trans-abstract xml:lang="en"><p>Betulin is a natural pentacyclic triterpenoid compound exhibiting a wide range of biological activity. The industrial use of betulin as a pharmaceutical substance requires addressing several key issues, including intensification of extraction from plant raw materials and improvement of its bioavailability. The present study was aimed at examining the effect of preliminary ultrasonic treatment of crushed birch bark on the efficiency of subsequent extraction and the characteristics of the target product. The conducted experiment shows that power optimization of ultrasonic treatment within the range of 250–300 W increases the yield of extractive substances to 37.0%; after the purification stage, the yield of the crystalline product (betulin) increases by 14.9% compared to the control sample (without ultrasonic treatment of phytomass), which in relative terms amounts to an excess of 43%. A comprehensive purity analysis of the obtained compound (thin-layer chromatography; infrared spectroscopy; melting temperatures of 257–259 °С) confirmed the high efficiency of the proposed purification method for removing related impurities and preserving the structural integrity of the target substance. Thus, the use of solvent extraction combined with the ultrasonic homogenization of birch bark phytomass increases the yield of the target high-purity product, as well as reducing the consumption of raw materials and extraction solvents. These advantages contribute significantly to efficient use of resources, which suggests that it is technologically and economically feasible to scale up this process.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>бетулин</kwd><kwd>фитомасса бересты</kwd><kwd>ультразвуковая гомогенизация</kwd><kwd>жидкостная экстракция</kwd><kwd>перекристаллизация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>betulin</kwd><kwd>birch bark phytomass</kwd><kwd>ultrasonic homogenization</kwd><kwd>solvent extraction</kwd><kwd>recrystallization</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">Falamas A., Pinzaru S.C., Dehelean C., Peev C., Soica C. Betulin and its natural resource as potential anticancer drug candidate seen by FT-Raman and FT-IR spectroscopy // Journal of Raman Spectroscopy. 2011. Vol. 42, no. 1. P. 97–107. 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