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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">msi</journal-id><journal-title-group><journal-title xml:lang="ru">Современная наука и инновации</journal-title><trans-title-group xml:lang="en"><trans-title>Modern Science and Innovations</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2307-910X</issn><publisher><publisher-name>North-Caucasus Federal University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37493/2307-910X.2024.2.8</article-id><article-id custom-type="elpub" pub-id-type="custom">msi-1621</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>ТЕХНОЛОГИЯ ПРОДОВОЛЬСТВЕННЫХ ПРОДУКТОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TECHNOLOGY OF FOOD PRODUCTS</subject></subj-group></article-categories><title-group><article-title>Определение оптимальных условий действия бета-галактозидаз продуцентов с разными свойствами</article-title><trans-title-group xml:lang="en"><trans-title>Determination of optimal conditions of action of beta-galactosidases of producers with different properties</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0119-9061</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шпак</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shpak</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мария Александровна Шпак – доцент кафедры технологии машиностроения и техносферной безопасности, инженерный институт Scopus ID: 57222360209</p><p>Ставрополь</p></bio><bio xml:lang="en"><p>Maria A. Shpak – Associate Professor of the Department of Engineering Technology and Technosphere Safety, Engineering Institute Scopus ID: 57222360209 </p><p>Stavropol</p></bio><email xlink:type="simple">1maria.bratsikhina@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>Рябцева</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ryabtseva</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Светлана Андреевна Рябцева – доктор технических наук, профессор, профессор кафедры прикладной биотехнологии, факультет пищевой инженерии и биотехнологий имени академика А.Г. Храмцова Scopus ID: 57201977346 </p><p>Ставрополь</p></bio><bio xml:lang="en"><p>Svetlana A. Ryabtseva – Dr. Sci. (Techn.)., Professor, Professor of the Department of Applied Biotechnology, Faculty of Food Engineering and Biotechnology named after Academician A.G. Khramtsov Scopus ID: 57201977346 </p><p>Stavropol</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лодыгин</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Lodygin</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Дмитриевич Лодыгин – доктор технических наук, доцент, заведующий кафедрой прикладной биотехнологии факультета пищевой инженерии и биотехнологий имени академика А.Г. Храмцова Scopus ID: 57021535400 </p><p>Ставрополь</p></bio><bio xml:lang="en"><p>Aleksey D. Lodygin – Head of Applied Biotechnology Department, Faculty of Food Engineering and Biotechnology named after Academician A.G. Khramtsov, Dr. Sc. (Techn.), Associate Professor Scopus ID: 57021535400 </p><p>Stavropol</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Корниенко</surname><given-names>П. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kornienko</surname><given-names>P. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полина Ивановна Корниенко – студент кафедры прикладной биотехнологии, факультет пищевой инженерии и биотехнологий имени академика А.Г. Храмцова </p><p>Ставрополь</p></bio><bio xml:lang="en"><p>Polina I. Kornienko – Student of Applied Biotechnology Department, Faculty of Food Engineering and Biotechnology named after Academician A.G. Khramtsov </p><p>Stavropol</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колядина</surname><given-names>П. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolyadina</surname><given-names>P. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полина Сергеевна Колядина – студент кафедры прикладной биотехнологии, факультет пищевой инженерии и биотехнологий имени академика А.Г. Храмцова </p><p>Ставрополь</p></bio><bio xml:lang="en"><p>Polina S. Kolyadina – Student of Applied Biotechnology Department, Faculty of Food Engineering and Biotechnology named after Academician A.G. Khramtsov </p><p>Stavropol</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Северо-Кавказский федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>North-Caucasus Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>25</day><month>09</month><year>2024</year></pub-date><volume>0</volume><issue>2</issue><fpage>76</fpage><lpage>85</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шпак М.А., Рябцева С.А., Лодыгин А.Д., Корниенко П.И., Колядина П.С., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Шпак М.А., Рябцева С.А., Лодыгин А.Д., Корниенко П.И., Колядина П.С.</copyright-holder><copyright-holder xml:lang="en">Shpak M.A., Ryabtseva S.A., Lodygin A.D., Kornienko P.I., Kolyadina P.S.</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://msi.elpub.ru/jour/article/view/1621">https://msi.elpub.ru/jour/article/view/1621</self-uri><abstract><p>В работе проведены исследования влияния рН и температуры на активность ферментных препаратов дрожжей и молочнокислых бактерий, выделенных в результате их раздельного и совместного культивирования. Установлено, что оптимум действия фермента зависит в первую очередь от вида его продуцента. В случае раздельного культивирования максимальная активность бета-галактозидаз дрожжей была отмечена для вида K. lactis, которая в 4 раза превышала показатель K. marxianus. При чем для штаммов K. lactis Y-1333 и K. lactis Y1339 были выявлены схожие результаты и оптимум действия при рН 5,0 и температуре 60°С. В экспериментах с молочнокислыми бактериями активность бета-галактозидазы ацидофильной палочки в 2 превышала активность фермента термофильного стрептококка, обладала большей устойчивостью к действию температур и сохраняла стабильность практически во всем диапазоне рН. Максимальная активность лактазы Lb. acidophilus В была выявлена при температуре 60°С и рН 5,0, а St. thermophilиs В при 40°С и рН 5,0. Кроме того, было выявлено, что совместное культивирование дрожжей и молочнокислых микроорганизмов оказывает положительное влияние на активность бета-галактозидаз. Максимальная лактазная активность K. marxianus Y-1333 + St. thermophilus В оказалась на 45% больше, чем отдельно K. marxianus Y1333 и практически в 3 раза превысила активность St. thermophilus В. Наибольшая активность (на уровне 1,42 МЕ/см3 ) была получена для комбинации K. lactis Y-1333 + Lb. acidophilus В. В случае бета-галактозидаз, полученных в результате совместного культивирования дрожжей и вязких культур молочнокислых микроорганизмов, оптимальными условиями можно считать рН 5,0 и 60°С для сочетания культур K. lactis Y-1333 + St. thermophilиs В и K. lactis Y-1339 + St. thermophilиs В, рН 7,0÷7,5 и 60°С для K. lactis Y-1333 + Lb. acidophilus В, рН 6,0÷6,6 и 60°С при использовании фермента K. marxianus Y-1338 + Lb. acidophilus В. </p></abstract><trans-abstract xml:lang="en"><p>The synthesis of beta-galactosidase is observed in microorganisms of various taxonomic groups, including some strains of yeast fungi and lactic acid bacteria. The present work considers the study of optimal conditions of beta-galactosidase activity obtained as a result of separate and co-cultivation of domestic yeast strains Kluyveromyces marxianus Y-1338, Kluyveromyces lactis Y-1333, Kluyveromyces lactis Y-1339 and starter cultures Lactobacillus acidophilus, Streptococcus thermophilus. Studies of the pH and temperature effect on the activity of yeast and lactic acid bacteria enzymes received as a result of their separate and co-cultivation were carried out in the work. It has been established that the optimum of the enzyme activity depends primarily on the type of its producer. In the case of separate cultivation, the maximum activity of yeast beta-galactosidases was observed for the species K. lactis and was 4 times higher than K. marxianus. Moreover, for the K. lactis Y-1333 and K. lactis Y-1339 strains, similar results and optimal conditions were found at pH 5.0 and temperature 60°C. In experiments with lactic acid bacteria, the activity of beta-galactosidase of acidophilic bacillus was twice higher than the thermophilic streptococcus enzyme activity, had greater resistance to temperatures and stability over almost the entire pH range. Maximum lactase activity of Lb. acidophilus B was observed at 60°C and pH 5.0, and St. thermophilus B at 40° C and pH 5.0. It was found that the activity of combined enzymes of yeast and lactic acid microorganisms was significantly higher than the activity of beta-galactosidase after their separate cultivation. The maximum lactase activity of K. marxianus Y-1333 + St. thermophilus B was higher by 45% than K. marxianus Y-1333 and almost 3 times higher than value of St. thermophilus B. The greatest activity (~1.42 IU/cm3 ) was obtained for the combination of K. lactis Y-1333 + Lb. acidophilus B. In the case of beta-galactosidases obtained by co-cultivation of yeast and viscous cultures of lactic acid microorganisms, optimal conditions include pH 5.0 and 60°C for the combination of cultures K. lactis Y-1333 + St. thermophilus B and K. lactis Y-1339 + St. thermophilus B, pH 7,0÷7,5 and 60°C for K. lactis Y-1333 + Lb. acidophilus B, pH 6,0÷6,6 and 60°C using the enzyme K. marxianus Y-1338 + Lb. acidophilus B.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>бета-галактозидаза</kwd><kwd>активность фермента</kwd><kwd>оптимальные условия</kwd><kwd>Lactobacillus acidophilus</kwd><kwd>Streptococcus thermophilus</kwd><kwd>Kluyveromyces marxianus</kwd><kwd>Kluyveromyces lactis</kwd></kwd-group><kwd-group xml:lang="en"><kwd>beta-galactosidase</kwd><kwd>enzyme activity</kwd><kwd>optimal conditions</kwd><kwd>Lactobacillus acidophilus</kwd><kwd>Streptococcus thermophilus</kwd><kwd>Kluyveromyces marxianus</kwd><kwd>Kluyveromyces lactis</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">работа выполнена при финансовой поддержке Министерства науки и высшего образования Российской Федерации в рамках реализации комплексного проекта по созданию высокотехнологичного производства по теме: «Создание первого в России высокотехнологичного производства пребиотика лактулозы и функциональных молочных ингредиентов для импортозамещения в медицине, ветеринарии, детском питании, производстве лечебно-профилактических продуктов для людей и животных» (Соглашение о предоставлении из федерального бюджета субсидии на развитие кооперации государственного научного учреждения и организации реального сектора экономики в целях реализации комплексного проекта по созданию высокотехнологичного производства №075-11-2022-021 от 07.04.2022 г.) в рамках Постановления Правительства РФ от 9 апреля 2010 г. № 218 на базе ФГАОУ ВО «Северо-Кавказский федеральный университет».</funding-statement><funding-statement xml:lang="en">the work was financially supported by the Ministry of Science and Higher Education of the Russian Federation as part of a comprehensive project to create a high-tech production on the topic: “Creation of the first high-tech production in Russia of lactulose prebiotic and functional dairy ingredients for import substitution in medicine, veterinary medicine, baby food, production of medical preventive products for humans and animals” (Agreement on the provision of subsidies from the federal budget for the development of cooperation between a state scientific institution and an organization of the real sector of the economy in order to implement a comprehensive project for the creation of high-tech production No. 075-11-2022-021 of 04/07/2022) in the framework of the Decree of the Government of the Russian Federation of April 9, 2010 No. 218 on the basis of the North-Caucasus Federal University.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Ramirez S. 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