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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">10.21285/2227-2925-2023-13-2-228-234</article-id><article-id custom-type="edn" pub-id-type="custom">KEQTJT</article-id><article-id custom-type="elpub" pub-id-type="custom">vuzbiochemi-1017</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>Изменение состава эфирного масла Thymus vulgaris при различных условиях хранения и его антимикробная активность</article-title><trans-title-group xml:lang="en"><trans-title>Changes in essential oil composition of Thymus vulgaris under different storage conditions and its antimicrobial activity</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9900-4954</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чонг</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Trong</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ле Ван Чонг - доктор биологических наук.</p><p>40130, Тханьхоа, ул. Куанг Чунг, 565</p></bio><bio xml:lang="en"><p>Le V. Trong - Dr. Sci. (Biology), Hong Duc University.</p><p>565, Quang Trung St., 40130, Thanh Hoa</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3826-1199</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тхинь</surname><given-names>Б. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Thinh</surname><given-names>B. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Буй Бао Тхинь - научный сотрудник.</p><p>31-155, Краков, ул. Варшавская, 24</p></bio><bio xml:lang="en"><p>Bui B. Thinh – Researcher.</p><p>24, Warszawska St., 31-155, Krakow</p></bio><email xlink:type="simple">buibaothinh9595@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет Хонгдык</institution><country>Вьетнам</country></aff><aff xml:lang="en"><institution>Hong Duc University Thanh Hoa</institution><country>Viet Nam</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Краковский технологический университет</institution><country>Польша</country></aff><aff xml:lang="en"><institution>Cracow University of Technology</institution><country>Poland</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>02</day><month>07</month><year>2023</year></pub-date><volume>13</volume><issue>2</issue><fpage>228</fpage><lpage>234</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Чонг Л.В., Тхинь Б.Б., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Чонг Л.В., Тхинь Б.Б.</copyright-holder><copyright-holder xml:lang="en">Trong L.V., Thinh B.B.</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/1017">https://vuzbiochemi.elpub.ru/jour/article/view/1017</self-uri><abstract><p>Благодаря своим целебным свойствам чабрец (Thymus vulgaris L.) веками использовался в традиционной медицине, а сегодня он широко применяется в ароматерапии, косметологии и даже в качестве кулинарной добавки. Данное исследование посвящено изучению влияния хранения при различных температурах эфирных масел, извлеченных из надземных частей T. vulgaris, на химический состав и антимикробную активность. Эфирные масла были получены путем гидродистилляции высушенных на воздухе образцов и проанализированы с использованием газовой хроматографии (ГХ) и газовой хроматографии/массспектрометрии (ГХ/МС). В исследовании наблюдались изменения в составе эфирного масла при хранении в холодильнике (4 °C) и при комнатной температуре (25 °C) в течение трех месяцев. Результаты показали, что доли соединений с более низкими температурами кипения, такие как β-мирцен (2,29–0,20%) и α-пинен (2,74–0,24%), наряду с γ-терпиненом (7,84–4,81%) и п-цимолом (10,93–5,61%) в качестве предшественников тимола и карвакрола значительно снижались при хранении при комнатной температуре. Однако количество тимола и карвакрола увеличилось на 51,64 и 21,81% соответственно после трех месяцев хранения, что указывает на повышение индекса качества масла. Хранение эфирного масла в холодильнике привело к минимальным изменениям состава эфирного масла и сохранению его исходного качества. Кроме того, противомикробная активность эфирных масел была проверена с использованием метода микроразведения бульона, а также было продемонстрировано, что эфирные масла обоих способов хранения сохраняли свою противомикробную активность по сравнению со свежеэкстрагированными. Таким образом, полученные результаты полезны для производителей и потребителей эфирных масел в фармацевтической и косметической промышленности.</p></abstract><trans-abstract xml:lang="en"><p>Thyme (Thymus vulgaris L.) has been used for centuries in traditional medicine due to its various health benefits, and it is widely used today in aromatherapy, cosmetics, and even as a culinary herb. This study aimed to investigate how the chemical compositions and antimicrobial activity of essential oils extracted from the aerial parts of T. vulgaris were affected by storage at different temperatures. The essential oils were obtained by hydrodistillation of air-dried samples and analyzed using gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). The study observed changes in the essential oil’s composition when stored in a refrigerator (4 °C) and at room temperature (25 °C) for three months. The results revealed that the proportions of compounds with lower boiling temperatures such as β-myrcene (2.29–0.20%) and α-pinene (2.74–0.24%) along with γ-terpinene (7.84–4.81%) and p-cymene (10.93–5.61%) as thymol and carvacrol precursors, were significantly decreased when stored at room temperature. However, the amounts of thymol and carvacrol increased by 51.64 and 21.81%, respectively, after three months storage period, indicating a rise in the oil quality index. Storing the essential oil in a refrigerator resulted in minimal changes to the essential oil composition and maintained its primary quality. In addition, the antimicrobial activity of the essential oils was tested using the broth microdilution method and demonstrated that the essential oils from both storage methods retained their antimicrobial activity compared to freshly extracted ones. In summary, these findings are beneficial for essential oil producers and consumers in the pharmaceutical and cosmetic industries.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Thymus vulgaris</kwd><kwd>эфирное масло</kwd><kwd>условия хранения</kwd><kwd>антимикробная активность</kwd><kwd>тимол</kwd><kwd>карвакрол</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Thymus vulgaris</kwd><kwd>essential oil</kwd><kwd>storage conditions</kwd><kwd>antimicrobial activity</kwd><kwd>thymol</kwd><kwd>carvacrol</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">Bakkali F., Averbeck S., Averbeck D., Idaomar M. Biological effects of essential oils – a review. Food and Chemical Toxicology. 2008;46(2):446-475. https://doi.org/10.1016/j.fct.2007.09.106.</mixed-citation><mixed-citation xml:lang="en">Bakkali F., Averbeck S., Averbeck D., Idaomar M. 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