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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">vestiag</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия аграрных наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Agrarian Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1817-7204</issn><issn pub-type="epub">1817-7239</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1817-7204-2018-56-1-109-121</article-id><article-id custom-type="elpub" pub-id-type="custom">vestiag-285</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>ПЕРАПРАЦОЎКА І ЗАХАВАННЕ СЕЛЬСКАГАСПАДАРЧАЙ ПРАДУКЦЫІ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PROCESSING AND STORAGE OF AGRICULTURAL PRODUCTION</subject></subj-group></article-categories><title-group><article-title>ИЗУЧЕНИЕ РАЗНООБРАЗИЯ БАКТЕРИОФАГОВ ЛАКТОКОККОВ, ВЫДЕЛЕННЫХ ИЗ ФЕРМЕНТИРОВАННЫХ МОЛОЧНЫХ ПРОДУКТОВ, С ИСПОЛЬЗОВАНИЕМ МОЛЕКУЛЯРНО-ГЕНЕТИЧЕСКИХ МЕТОДОВ</article-title><trans-title-group xml:lang="en"><trans-title>STUDYING THE DIVERSITY OF LACTOCOCCI BACTERIOPHAGES OBTAINED FROM FERMENTED DAIRY PRODUCTS USING MOLECULAR GENETIC METHODS</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>Василенко</surname><given-names>С. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasilenko</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. биологических наук, заведующая лабораторией микробиологи- ческих исследований и коллекции промышленных микроорганизмов отдела биотехнологий</p></bio><bio xml:lang="en"><p>Ph.D. (Biological)</p></bio><email xlink:type="simple">vasylenko@tut.by</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>Фурик</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Furyk</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук, заместитель директора по научной работе</p></bio><bio xml:lang="en"><p>Ph.D. (Engineering)</p></bio><email xlink:type="simple">furik_nn@tut.by</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>Казак</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kazak</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>инженер лаборатории микробиологических исследований и коллекции промышленных микроорганизмов отдела биотехнологий</p></bio><email xlink:type="simple">yellowpooh@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт мясо-молочной промышленности, Минск</institution></aff><aff xml:lang="en"><institution>The Institute of Meat and Dairy Industry, the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>04</day><month>04</month><year>2018</year></pub-date><volume>56</volume><issue>1</issue><fpage>109</fpage><lpage>121</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Василенко С.Л., Фурик Н.Н., Казак А.Н., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Василенко С.Л., Фурик Н.Н., Казак А.Н.</copyright-holder><copyright-holder xml:lang="en">Vasilenko S.I., Furyk N.N., Kazak A.N.</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://vestiagr.belnauka.by/jour/article/view/285">https://vestiagr.belnauka.by/jour/article/view/285</self-uri><abstract><p>В производстве ферментированных молочных продуктов на территории Республики Беларусь чаще других используют молочнокислые бактерии, относящиеся к р. Lactococcus. Непрерывный фаговый мониторинг позволяет ограничить экономические потери от фаголизиса при производстве кисломолочных продуктов, а также снизить риск контаминации готовой продукции патогенной микробиотой. Для этого необходимо выделять, идентифицировать, определять свойства бактериофагов, циркулирующих на предприятиях, принимая во внимание, что на каждом отдельном предприятии присутствуют определенные виды (типы) фагов, что обусловлено ассортиментом выпускаемой продукции, применяемыми видами заквасок и соблюдением санитарно-гигиенических условий. В статье представлены исследования по выделению и характеристике бактериофагов лактококков. Из 51 фагосодержа- щего образца продукции, отобранного на территории Республики Беларусь, выделено 68 бактериофагов. Определен спектр их литической активности. На основании результатов ПЦР с видоспецифичными праймерами 39 бактериофагов отнесены к виду С2. Один бактериофаг по результатам ПЦР идентифицирован как вид Р335. Бактериофагов вида 936 среди выделенных вирусов не выявлено. Проведена дифференциация лактококкофагов вида С2. Проведен подбор рестриктаз, позволяющих различать фаги внутри вида С2. Разработана схема внутривидовой дифференциации бактериофагов лактококков с помощью ПДРФ-анализа. Использование ПДРФ-анализа позволило разделить 39 лактофагов вида С2 на шесть групп. Благодарности. Работа выполнена в рамках исследований по заданию 9.5.50 «Изучение видового разнообразия молочнокислых бактерий, выделенных из природных источников, изменчивости фагов лактококков, выделенных на молокоперерабатывающих предприятиях, в зависимости от сезонности и региональности» ГПНИ «Инновационные технологии в АПК».</p></abstract><trans-abstract xml:lang="en"><p>For production of fermented milk products in the territory of the Republic of Belarus, lactic acid bacteria related to p. Lactococcus are used more often. Continuous phage monitoring makes it possible to limit economic losses due to phagolysis at production of fermented milk products, as well as to reduce the risk of contamination of finished products with pathogenic microbiota. It is necessary to identify and determine the properties of bacteriophages for that circulating at enterprises, considering that at each individual enterprise there are no specific types (kinds) of phages, which is due to the assortment of products, types of ferments used and hygiene conditions. The article dwells on studies on isolation and characterization of lactococci bacteriophages. Of the 51 phagocontaining samples of products selected in the territory of the Republic of Belarus, 68 bacteriophages have been isolated. The spectrum of their lytic activity was determined. Based on the results of PCR with species specific primers, 39 bacteriophages are classified as C2 type. One bacteriophage was identified as P335 according to PCR results. 939 type bacteriophages were not detected among the isolated viruses. Differentiation of C2 type lactococcal phages was carried out. A selection of the restriction enzymes allowing to distinguish phages inside the C2 type is carried out. A scheme of intraspecific differentiation of lactococci bacteriophages was developed using RFLP analysis. RFLP-analysis allowed to divide 39 lactophages of type C2 into six groups. Acknowledgements. The work was carried out within the framework of research under task 9.5.50 “Study of species diversity of lactic acid bacteria obtained from natural sources, variability of lactococci phages obtained at milk processing plants, depending on season and region” of GPNI “Innovative technologies in agro-industrial complex”.</p><p> </p></trans-abstract><kwd-group xml:lang="ru"><kwd>бактериофаги</kwd><kwd>лизаты</kwd><kwd>ПЦР</kwd><kwd>рестрикция</kwd><kwd>ПДРФ-анализ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>bacteriophages</kwd><kwd>lysates</kwd><kwd>PCR</kwd><kwd>restriction</kwd><kwd>RFLP analysis</kwd><kwd>dairy products</kwd><kwd>lytic activity</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">Кувалдина, Н. Как «обезопасить» молочную продукцию / Н. Кувалдина, Н. 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