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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">vguit</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Воронежского государственного университета инженерных технологий</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Voronezh State University of Engineering Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-910X</issn><issn pub-type="epub">2310-1202</issn><publisher><publisher-name>VSUET</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20914/2310-1202-2018-2-249-255</article-id><article-id custom-type="elpub" pub-id-type="custom">vguit-1880</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>Пищевая  биотехнология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Food biotechnology</subject></subj-group></article-categories><title-group><article-title>Сравнительный анализ химического состава и антиоксидантных свойств разных видов чая как исходного сырья для производства чайных экстрактов</article-title><trans-title-group xml:lang="en"><trans-title>Comparative analysis of the chemical composition and antioxidant properties of different types of tea as a raw material for the production of tea 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>Валиулина</surname><given-names>Д. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Valiulina</surname><given-names>D. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент, кафедра , ул. Молодогвардейская 244, г. Самара, 443100, Россия</p></bio><bio xml:lang="en"><p>candidate of technical sciences, assistant professor, department, Molodogvardiis'ka str., 224, Samara, 443100, Russia</p></bio><email xlink:type="simple">dinara-bakieva@mail.ru</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>Макарова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Makarova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.х.н., профессор, кафедра , ул. Молодогвардейская 244, г. Самара, 443100, Россия</p></bio><bio xml:lang="en"><p>doctor of chemical sciences, professor, department, Molodogvardiis'ka str., 224, Samara, 443100, Russia</p></bio><email xlink:type="simple">makarovanv1969@yandex.ru</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>Будылин</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Budylin</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант, кафедра , ул. Молодогвардейская 244, г. Самара, 443100, Россия</p></bio><bio xml:lang="en"><p>graduate student, department, Molodogvardiis'ka str., 224, Samara, 443100, Russia</p></bio><email xlink:type="simple">noreplay@elpub.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самарский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara State Technical university</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>26</day><month>08</month><year>2018</year></pub-date><volume>80</volume><issue>2</issue><fpage>249</fpage><lpage>255</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Валиулина Д.Ф., Макарова Н.В., Будылин Д.В., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Валиулина Д.Ф., Макарова Н.В., Будылин Д.В.</copyright-holder><copyright-holder xml:lang="en">Valiulina D.F., Makarova N.V., Budylin D.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.vestnik-vsuet.ru/vguit/article/view/1880">https://www.vestnik-vsuet.ru/vguit/article/view/1880</self-uri><abstract><p>Одним из наиболее часто потребляемых источников натуральных антиоксидантов является чай. Высокое содержание фенольных веществ в нем, делает его отличным функциональным напитком. В настоящее время интерес к чаю велик не только как к самостоятельному напитку, но и как к исходному сырью для производства чайных экстрактов. Исследование проводилось на экстрактах, полученных из образцов листового чая иностранного и российского производства по следующим показателям: содержание растворимых сухих веществ в экстрактах чая; общее содержание фенольных веществ; общее содержание флавоноидов; общее содержание танинов; антирадикальная активность по методу DPPH; восстанавливающая сила по методу FRAP. В ходе проведения исследования видов чая, различных по способу обработки и по региону происхождения, было определено, что лидером среди представленных чаев является белый чай китайского происхождения, имеющий самую высокую антирадикальную активность и наибольшее содержание танинов. Сравнивая между собой зеленые чаи из Китая и России, можно заключить, что содержание отдельных групп веществ незначительно разнится на фоне чуть более высокой антирадикальной активности чая китайского. В группе черных чаев лидирует по полученным результатам испытании чай индийский «Хармутти», значительно превосходя чай из Краснодарского края по антирадикальной активности и общему содержанию фенольных веществ. Таким образом, перспективными видами чая для профилактики заболеваний (диабет, атеросклероз, гипертензия, болезнь Альцгеймера), возникающих как следствие окислительного стресса, являются чай белый китайский и чай зеленый краснодарский.</p></abstract><trans-abstract xml:lang="en"><p>One of the most frequently consumed sources of natural antioxidants is tea. High content of phenolic substances in it, makes it an excellent functional drink. At present, interest in tea is great not only as an independent drink, but also as a raw material for the production of tea extracts. The study was conducted on extracts obtained from samples of leaf tea of foreign and Russian origin in the following parameters: the content of soluble solids in tea extracts; total content of phenolic substances; total content of flavonoids; total content of tannins; antiradical activity by the DPPH method; restoring force by the method of FRAP. During the study of tea species, different in the way of processing and in the region of origin, it was determined that the leader among the presented teas is the white tea of Chinese origin, which has the highest antiradical activity and the highest content of tannins. Comparing green tea from China and Russia, it can be concluded that the content of individual groups of substances varies slightly against the background of slightly higher anti-radical activity of Chinese tea. In the group of black teas, the Indian "Harmutti" tea is in the lead by the results of the test, significantly exceeding tea from the Krasnodar Territory by anti-radical activity and the total content of phenolic substances. Thus, promising types of tea for the prevention of diseases (diabetes, atherosclerosis, hypertension, Alzheimer's disease), arising as a consequence of oxidative stress, are tea white Chinese and green tea Krasnodar.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>чай</kwd><kwd>фенольные вещества</kwd><kwd>флавоноиды</kwd><kwd>антикосидантная активность</kwd><kwd>окислительный стресс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>tea</kwd><kwd>phenolic substances</kwd><kwd>flavonoids</kwd><kwd>antioxidant activity</kwd><kwd>oxidative stress</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">Nagao, T., Hase, T. and Tokimitsu, I. 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