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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">10.29235/1029-8940-2024-69-1-79-88</article-id><article-id custom-type="elpub" pub-id-type="custom">vestib-912</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>Антимикробная активность эфирных масел и экстрактов Thuja occidentalis</article-title><trans-title-group xml:lang="en"><trans-title>Antimicrobial activity of Thuja occidentalis essential oils and extracts</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>Коваленко</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalenko</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коваленко Наталья Александровна – канд. хим. наук, доцент</p><p>ул. Свердлова, 13а, 220006, г. Минск</p></bio><bio xml:lang="en"><p>Natalya A. Kovalenko – Ph. D. (Chem.), Associate Professor</p><p>13a, Sverdlov Str., 220006, Minsk</p></bio><email xlink:type="simple">kovalenko@belstu.by</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>Супиченко</surname><given-names>Г. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Supichenkо</surname><given-names>G. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Супиченко Галина Николаевна – канд. хим. наук, ст. преподаватель</p><p>ул. Свердлова, 13а, 220006, г. Минск</p></bio><bio xml:lang="en"><p>Galina N. Supichenko – Ph. D. (Chem.), Senior lecturer</p><p>13a, Sverdlov Str., 220006, Minsk</p></bio><email xlink:type="simple">Supichenko@belstu.by</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>Ахрамович</surname><given-names>Т. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Ahramovich</surname><given-names>Т. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ахрамович Татьяна Игоревна – канд. биол. наук, доцент</p><p>ул. Свердлова, 13а, 220006, г. Минск</p></bio><bio xml:lang="en"><p>Tatyana I. Ahramovich – Ph. D. (Biol.), Associate Professor</p><p>13a, Sverdlov Str., 220006, Minsk</p></bio><email xlink:type="simple">ahramovich@belstu.by</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>Нечай</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Niachai</surname><given-names>Y. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нечай Юлия Андреевна – студент</p><p>ул. Свердлова, 13а, 220006, г. Минск</p></bio><bio xml:lang="en"><p>Yulia A. Niachai – 4th year student of the Faculty of Technology of Organic Substances</p><p>13a, Sverdlov Str., 220006, Minsk</p></bio><email xlink:type="simple">Jnechai22@gmail.com</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>Леонтьев</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Leontiev</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Леонтьев Виктор Николаевич – канд. хим. наук, доцент, заведующий кафедрой</p><p>ул. Свердлова, 13а, 220006, г. Минск</p></bio><bio xml:lang="en"><p>Victor N. Leontiev – Ph. D. (Chem.), Associate Professor, Head of the Department</p><p>13a, Sverdlov Str., 220006, Minsk</p></bio><email xlink:type="simple">leontiev@belstu.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный технологический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian State Technological University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>08</day><month>02</month><year>2024</year></pub-date><volume>69</volume><issue>1</issue><fpage>79</fpage><lpage>88</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Коваленко Н.А., Супиченко Г.Н., Ахрамович Т.И., Нечай Ю.А., Леонтьев В.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Коваленко Н.А., Супиченко Г.Н., Ахрамович Т.И., Нечай Ю.А., Леонтьев В.Н.</copyright-holder><copyright-holder xml:lang="en">Kovalenko N.A., Supichenkо G.N., Ahramovich Т.I., Niachai Y.A., Leontiev V.N.</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/912">https://vestibio.belnauka.by/jour/article/view/912</self-uri><abstract><p>Методом гидродистилляции получены образцы эфирного масла интродуцированных в Республике Беларусь культиваров Thuja occidentalis с колоновидной и шаровидной формами кроны. Методом газожидкостной хроматографии проведены идентификация и количественное определение 26 компонентов. Доминирующими компонентами являлись α-туйон (~55–60 %), β-туйон (~10–12 %), фенхон (~8–16 %), сабинен (~1–5 %), камфора (~1– 4 %), борнилацетат (~1–3 %). Показаны особенности распределения энантиомеров терпеноидов эфирного масла изученных культиваров и выявлена антимикробная активность эфирного масла Thuja occidentalis в отношении тестовых культур грамположительных и грамотрицательных бактерий. Бактериальные культуры оказались более чувствительными к ингибирующему действию эфирного масла из растений с шаровидной формой кроны. Показано влияние оптической активности камфоры на антимикробные свойства эфирного масла туи. Установлено, что по антимикробной активности спиртовые экстракты Thuja occidentalis уступают эфирным маслам. Показано влияние формы кроны и окраски хвои на антиоксидантные свойства изученных культиваров.</p></abstract><trans-abstract xml:lang="en"><p>The steam distillation method was used to obtain samples of essential oil of cultivars with a columnar and spherical shape of the crown Thuja occidentalis introduced in the Republic of Belarus. More than 26 components have been identified and determined in the essential oil of Thuja occidentalis by gas-liquid chromatography. The dominant components are α-thujone (∼55–60 %), β-thujone (∼10–12 %), fenchone (∼8–16 %), sabinene (∼1–5 %), camphor (∼1–4 %), bornylacetate (∼1–3 %). Distributions of terpenoid enantiomers in the essential oil of Thuja occidentalis cultivars are shown. The antimicrobial activity of Thuja occidentalis essential oils was detected in relation to test cultures of gram-positive and gram-negative bacteria. Bacterial cultures were more sensitive to the inhibitory effect of essential oil samples from plants with a spherical crown shape. The influence of the optical activity of camphor on the essential oil antimicrobial properties is shown. It has been established that alcohol extracts of Thuja occidentalis are inferior to essential oils in terms of antimicrobial activity. The effect of the crown shape and the color of the studied cultivar needles on their antioxidant properties is shown.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Thuja occidentalis</kwd><kwd>эфирные масла</kwd><kwd>энантиомеры</kwd><kwd>экстракты</kwd><kwd>антимикробная активность</kwd><kwd>антиоксидантная активность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Thuja occidentalis</kwd><kwd>essential oils</kwd><kwd>enantiomers</kwd><kwd>extracts</kwd><kwd>antimicrobial activity</kwd><kwd>antioxidant activity</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">Pons, M. J. Current trends in epidemiology and antimicrobial resistance in intensive care units / M. J. Pons, J. Ruiz // J. Emerg. Crit. Care. Med. – 2019. – Vol. 3. – Art. 5. https://doi.org/10.21037/jeccm.2019.01.05</mixed-citation><mixed-citation xml:lang="en">Pons M. J., Ruiz J. 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