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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">10.21323/2618-9771-2023-6-2-171-179</article-id><article-id custom-type="elpub" pub-id-type="custom">foodsyst-267</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>Examination of the extract from lichen (Cetraria islandica) after an ultrasonic impact</article-title><trans-title-group xml:lang="ru"><trans-title>Исследование экстракта из лишайника Cetrária islándica после ультразвукового воздействия</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 463Тел.: +7–913–206–32–34</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, RussiaTel.: +7–913–206–32–34</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 463Тел.: +7–923–134–85–73</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, RussiaTel.: +7–923–134–85–73</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 463Тел.: +7–953–764–68–82</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, RussiaTel.: +7–953–764–68–82</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"><institution>Сибирский федеральный научный центр агробиотехнологий РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian Federal Research Center of Agrobiotechnologies Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>13</day><month>07</month><year>2023</year></pub-date><volume>6</volume><issue>2</issue><fpage>171</fpage><lpage>179</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Nitsievskaya K.N., Stankevich S.V., Boroday E.V., 2023</copyright-statement><copyright-year>2023</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 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://www.fsjour.com/jour/article/view/267">https://www.fsjour.com/jour/article/view/267</self-uri><abstract><p>An integral part of human healthy nutrition is intake of biologically active substances. Extraction is an important stage of isolation of different bioactive substances from plants and effectiveness of their extraction increases with the use of ultrasonic treatment. The aim of this research was to study an effect of different types of aqueous media and treatment methods on Cetraria islandica, including the use of principles of ultrasonic treatment and maceration methods (infusion). The experimental studies consisted in detecting an effect of the active acidity of the aqueous medium (solvent) and method of impact upon extraction on several physicochemical and rheological indicators. The experimental samples of extracts were examined by the following indicators: active acidity and redox potential detected by the ionometric technique; dynamic viscosity and the depth of output of polymeric forms of phenolic substances determined by measuring the optical density and transmission coefficient. Mathematical processing of data using the regression analysis was carried out. The results are presented as graphs, tables and regression equations. It has been established that transfer of substances from Cetraria islandica to its extracts had high results at pH = 7.0 and рН = 9.0 of the solvent. When obtaining extracts by the infusion method, the quantity of polymeric compounds in the transition process was 1.3 times higher than the quantity of monomeric forms of phenolic compounds. The highest value of the dynamic viscosity was revealed in the extract sample obtained by the infusion method in the alkaline medium. The extracts obtained can be used in food system modeling.</p></abstract><trans-abstract xml:lang="ru"><p>Неотъемлемой частью здорового питания является поступление в организм человека биологически активных соединений. Экстракция — важнейший этап выделения из растений различных биоактивных веществ, и эффективность их извлечения повышается в совокупности с ультразвуковой обработкой. Цель данного исследования — изучить влияние различных видов водной среды и способов обработки на цетрарию исландскую, в том числе с использованием принципов ультразвуковой обработки и методом мацерации (настаивание). Экспериментальные исследования заключались в установлении влияния активной кислотности водной среды (растворителя) и метода воздействия при проведении экстракции на ряд физико-химических и реологических показателей. Исследованы опытные образцы экстрактов по следующим показателям: активная кислотность и окислительно-восстановительный потенциал, выявленные с помощью ионометрического метода; динамическая вязкость и глубина выхода полимерных форм фенольных веществ, установленные измерением оптической плотности и коэффициента пропускания. Проведена математическая обработка данных с использованием регрессионного анализа. Результаты представлены в виде графиков, таблиц и уравнений регрессии. Установлено, что переход веществ из цетрарии исландской в экстракты из нее имели высокие результаты при рН = 7,0 и рН = 9,0 растворителя. При получении экстрактов методом настаивания количество полимерных соединений в процессе перехода в 1,3 раза превышало число мономерных форм фенольных соединений. Наибольшее значение по исследуемому показателю «динамическая вязкость» было выявлено в образце экстракта, полученном методом настаивания в щелочной среде. Выделенные экстракты могут быть применены при моделировании пищевых систем.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>цетрария исландская</kwd><kwd>окислительновосстановительный потенциал</kwd><kwd>вязкость</kwd><kwd>оптическая плотность</kwd><kwd>активная кислотность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Cetraria islandica</kwd><kwd>redox potential</kwd><kwd>viscosity</kwd><kwd>optical density</kwd><kwd>active acidity</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">Freysdottir, J., Omarsdotti, S., Ingolfsdottir, K., Vikingsson, A., Olafsdottir, E. S. (2008). In vitro and in vivo immunomodulating effects of traditionally prepared extract and purified compounds from Cetraria islandica. 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