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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">foodsyst</journal-id><journal-title-group><journal-title xml:lang="en">Food systems</journal-title><trans-title-group xml:lang="ru"><trans-title>Пищевые системы</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2618-9771</issn><issn pub-type="epub">2618-7272</issn><publisher><publisher-name>Федеральный научный центр пищевых систем им. В.М. Горбатова РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21323/2618-9771-2026-9-1-25-31</article-id><article-id custom-type="elpub" pub-id-type="custom">foodsyst-997</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>Determination of the content of phenolic compounds in Sórbus aucupária fruits by nonstandard methods</article-title><trans-title-group xml:lang="ru"><trans-title>Определение содержания фенольных соединений в плодах Sorbus aucuparia нестандартными методами</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7302-106X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нициевская</surname><given-names>К. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Nitsievskaya</surname><given-names>K. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нициевская Ксения Николаевна — кандидат технических наук, доцент, ведущий научный сотрудник, отдел пищевых систем и биотехнологий</p><p>630501, Новосибирская обл., р.п. Краснообск, а/я 463</p></bio><bio xml:lang="en"><p>Kseniya N.  Nitsievskaya, Candidate of Technical Sciences, Leading Researcher, Department of Food Systems and Biotechnology</p><p>Box 463, Novosibirsk region, 630501, Krasnoobsk</p></bio><email xlink:type="simple">nitsievskayakn@sfsca.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/0000-0002-5157-2004</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Станкевич</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Stankevich</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Станкевич Светлана Владимировна  — кандидат сельскохозяйственных наук, научный сотрудник, отдел пищевых систем и  биотехнологий</p><p>630501, Новосибирская обл., р.п. Краснообск, а/я 463</p></bio><bio xml:lang="en"><p>Svetlana  V.  Stankevich, Candidate of Agricultural Sciences, Researcher, Department of Food Systems and Biotechnology</p><p>Box 463, Novosibirsk region, 630501, Krasnoobsk</p></bio><email xlink:type="simple">stankevichsv@sfsca.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/0000-0003-4350-085X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бородай</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Boroday</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бородай Елена Валерьевна  — старший научный сотрудник, отдел пищевых систем и биотехнологий</p><p>630501, Новосибирская обл., р.п. Краснообск, а/я 463</p></bio><bio xml:lang="en"><p>Elena V. Boroday, Senior Researcher, Department of Food Systems and Biotechnology</p><p>Box 463, Novosibirsk region, 630501, Krasnoobsk</p></bio><email xlink:type="simple">borodayev@sfsca.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Сибирский федеральный научный центр агробиотехнологий РАН<country>Россия</country></aff><aff xml:lang="en">Siberian Federal Research Center of Agrobiotechnologies of the Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>17</day><month>04</month><year>2026</year></pub-date><volume>9</volume><issue>1</issue><fpage>25</fpage><lpage>31</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Nitsievskaya K.N., Stankevich S.V., Boroday E.V., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Нициевская К.Н., Станкевич С.В., Бородай Е.В.</copyright-holder><copyright-holder xml:lang="en">Nitsievskaya K.N., Stankevich S.V., Boroday E.V.</copyright-holder><license 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.fsjour.com/jour/article/view/997">https://www.fsjour.com/jour/article/view/997</self-uri><abstract><p>Phenolic compounds are important biologically active substances that are responsible for color, taste and aroma of plant raw materials. The paper presents the results of the study of the plant raw material, namely Sórbus aucupária (mountain ash), in terms of the content of phenolic compounds. For investigation, three samples were taken from dried and frozen fruits of mountain ash of the Nevezhinskaya variety each. Methods for the analysis of phenolic compounds in the mountain ash fruits were chosen based on the study of the normative documentation regulating methods for determining biologically active phenolic substances as well as the scientific-technical publications on this theme. Acetone and ethanol were chosen for extraction. Quantification was performed by the photoelectrocolorimetric and titrimetric methods. The comparison of the results obtained by different methods was carried out. It has been established that the highest quantity of phenolic compounds was extracted by ethanol (40%). Frozen mountain ash fruits were found to be the most suitable raw material. The data obtained can be used in the development of the methods for analysis of phenolic compounds in plant raw materials.</p></abstract><trans-abstract xml:lang="ru"><p>Фенольные соединения являются важными биологически активными веществами, отвечающими за цвет, вкус и аромат растительного сырья. В  статье представлены результаты исследований растительного сырья, а  именно Sorbus Aucuparia (рябины красной), по содержанию фенольных соединений. Для исследования были отобраны по 3 образца из обезвоженных и замороженных плодов рябины красной сорта Nevezhinskaya. Выбор методов анализа фенольных соединений в плодах рябины красной осуществлялся на основе изучения нормативной документации, регламентирующей методы определения биологически активных веществ фенольной природы, а также научно-технических публикаций по данной теме. Для экстракции были выбраны ацетон и этанол; количественное определение проводили фотоэлектроколориметрическим и  титриметрическим методами. Проведено сравнение результатов, полученных разными методами. Установлено, что наибольшее количество фенольных соединений экстрагируется этанолом (40%). В качестве подходящего сырья были определены замороженные плоды рябины красной. Полученные данные могут быть использованы при разработке методов анализа фенольных соединений в растительном сырье.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>плоды Sórbus aucupária</kwd><kwd>сушка</kwd><kwd>замораживание</kwd><kwd>фенольные соединения</kwd><kwd>флавоноиды</kwd><kwd>нестандар</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Sórbus aucupária fruits</kwd><kwd>drying</kwd><kwd>freezing</kwd><kwd>phenolic compounds</kwd><kwd>flavonoids</kwd><kwd>nonstandard methods</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">Варданян, Л. Р., Арутюнян, С. А., Торосян, Г. О. (2025). 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