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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">spfp</journal-id><journal-title-group><journal-title xml:lang="ru">Хранение и переработка сельхозсырья</journal-title><trans-title-group xml:lang="en"><trans-title>Storage and Processing of Farm Products</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-9669</issn><issn pub-type="epub">2658-767X</issn><publisher><publisher-name>РОСБИОТЕХ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.36107/spfp.2025.4.679</article-id><article-id custom-type="elpub" pub-id-type="custom">spfp-679</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>БИОТЕХНОЛОГИЧЕСКИЕ И МИКРОБИОЛОГИЧЕСКИЕ АСПЕКТЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOTECHNOLOGICAL AND MICROBIOLOGICAL ASPECTS</subject></subj-group></article-categories><title-group><article-title>Селекция технологически ценных штаммов Lactococcus lactis subsp. lactis:  применение биохимических методов, MALDI-TOF MS и оценка пробиотических свойств перспективного образца</article-title><trans-title-group xml:lang="en"><trans-title>The Isolation of Technogenic Strains of Lactococcus lactis Subspecies lactis: Using Biological Techniques, Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS) and Assessment of the Probiotic Potential of a Promising Strain</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0015-446X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вольнова</surname><given-names>Екатерина Романовна</given-names></name><name name-style="western" xml:lang="en"><surname>Volnova</surname><given-names>Ekaterina R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>и.о. заведущего кафедрой "Биотехнология и биоорганический синтез", кандидат технических наук</p></bio><email xlink:type="simple">volnovaer@mgupp.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/0000-0001-6077-5957</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каночкина</surname><given-names>Мария Сергеевна</given-names></name><name name-style="western" xml:lang="en"><surname>Kanochkina</surname><given-names>Maria S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры «Биотехнология и технология продуктов биоорганического синтеза»</p></bio><email xlink:type="simple">kanoch@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Российский биотехнологический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Biotechnological University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Рос сийский биотехнологический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Biotechnological University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>07</day><month>02</month><year>2026</year></pub-date><volume>33</volume><issue>4</issue><fpage>55</fpage><lpage>76</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Вольнова Е.Р., Каночкина М.С., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Вольнова Е.Р., Каночкина М.С.</copyright-holder><copyright-holder xml:lang="en">Volnova E.R., Kanochkina M.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://www.spfp-mgupp.ru/jour/article/view/679">https://www.spfp-mgupp.ru/jour/article/view/679</self-uri><abstract><sec><title>Введение</title><p>Введение: Несмотря на широкое использование молочнокислых бактерий в пищевой промышленности, остается недостаточно изученным комплексный характеристический профиль отдельных пробиотических штаммов, включая их идентификацию, биохимические свойства и антагонистическую активность. </p></sec><sec><title>Цель</title><p>Цель: Провести селекцию и комплексно охарактеризовать штамм Lactococcus lactis subsp. lactis № 15 по морфологическим, физиологическим и биохимическим показателям, а также оценить его пробиотический потенциал и устойчивость к стрессовым факторам с целью выявления перспективных штаммов, обладающих оптимальными технологическими свойствами для производства кисломолочных продуктов.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы: Для идентификации штамма Lactococcus lactis subsp. lactis № 15 использовали метод MALDI-TOF MS, а функциональные свойства оценивали с помощью биохимических тестов API, посредством оценки ферментативной активности, а также исследований антагонистической активности в отношении патогенных микроорганизмов. Устойчивость к стрессам моделировали in vitro в средах, имитирующих желудочно-кишечный тракт.</p></sec><sec><title>Результаты</title><p>Результаты: Штамм продемонстрировал высокую жизнеспособность, активность ферментов β-галактозидазы и других ключевых гидролитических ферментов, выраженную антагонистическую активность против Staphylococcus aureus ВКПМ № 6646 и Klebsiella aerogenes ВКПМ № 13214, а также устойчивость к низкому pH и желчным солям.</p></sec><sec><title>Выводы</title><p>Выводы: Результаты исследования подтверждают перспективность использования Lactococcus lactis subsp. lactis № 15 в производстве пробиотических кисломолочных продуктов с улучшенными функциональными и технологическими характеристиками. Полученные данные могут быть применены для разработки инновационных бактериальных заквасок с высоким уровнем безопасности и эффективности в пищевой промышленности.</p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction: Research into lactic acid bacteria, which are widely used in the food industry, has revealed a lack of information regarding the intricate characteristics of individual probiotic strains, including their identification, elucidation of biochemical properties, and evaluation of antagonistic activity.</p></sec><sec><title>Purpose</title><p>Purpose: To isolate and comprehensively characterize Lactococcus lactis strain No. 15 in terms of its morphological, physiological, and biochemical properties, as well as to assess its probiotic potential and stress tolerance, in order to identify a novel strain with optimal functional characteristics for application in the production of fermented dairy products.</p></sec><sec><title>Materials and Methods</title><p>Materials and Methods: To achieve these goals, we used MALDI-MS to identify the strain, then evaluated its functional characteristics through a series of biochemical tests including API testing, enzyme activity assessment, and antagonist activity against pathogenic microorganisms. We also conducted in vitro modeling of stress resistance under simulated gastrointestinal conditions.</p></sec><sec><title>Results</title><p>Results: The strain demonstrated remarkable viability and exhibited robust beta-galactosidase and other important hydrolytic enzyme activities. Additionally, it showed a strong antagonistic effect against Staphylococcus aureus VKPM No. 6646 and Klebsiella aerogenes VKMP No. 13214, as well as resistance to low pH and bile salts.</p></sec><sec><title>Conclusion</title><p>Conclusion: Lactococcus lactis subsp. lactis № 15 has potential for use in the production of fermented dairy products with enhanced functional and technological properties. The data collected can serve as a basis for the development of new bacterial starters with high safety and efficacy in food production.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>микроорганизмы</kwd><kwd>пробиотические культуры</kwd><kwd>масс-спектрометрия</kwd><kwd>MALDI-TOF</kwd><kwd>молочнокислые бактерии</kwd><kwd>идентификация микроорганизмов</kwd><kwd>пробиотический потенциал</kwd><kwd>Lactococcus lactis subsp. lactis</kwd></kwd-group><kwd-group xml:lang="en"><kwd>microorganisms</kwd><kwd>probiotic cultures</kwd><kwd>matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF)</kwd><kwd>large-scale identification of microorganisms</kwd><kwd>probiotics</kwd><kwd>antibiotics</kwd><kwd>Lactococcus lactis subspecies lactis</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">Бибарсова, А. А., Семенова, Е. Ф., Золкина, Н. 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