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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">10.21323/2618-9771-2020-3-3-42-50</article-id><article-id custom-type="elpub" pub-id-type="custom">foodsyst-81</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>THE INFLUENCE OF MILK-CLOTTING ENZYMES ON THE FUNCTIONAL PROPERTIES OF PIZZA-CHEESES</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4443-7573</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Myagkonosov</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="en"><p>Dmitry S. Myagkonosov — candidate of technical sciences, leading researcher, head of research department in applied biochemistry and enzymology</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19. Tel .: + 7–915–973–63–13</p></bio><email xlink:type="simple">mds-mail@mail.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/0000-0001-8588-7103</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Mordvinova</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Valentina A. Mordvinova — candidate of technical sciences, leading researcher, head of research on cheesemaking technology and whey processing</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19. Tel .: + 7–915–970–36–38</p></bio><email xlink:type="simple">valentina-mordvinova@yandex.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/0000-0003-3587-4050</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Delitskaya</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="en"><p>Irina N. Delitskaya — candidate of technical sciences, leading researcher, department of cheesemaking</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19. Tel .: + 7–48532–98–1–28</p></bio><email xlink:type="simple">irina_delickaya@mail.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/0000-0001-8326-1932</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Abramov</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Dmitry V. Abramov — candidate of biological sciences, leading researcher, head of biochemical research in cheesemaking and buttermaking</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19. Tel .: + 7–910–970–42–97</p></bio><email xlink:type="simple">uglich.dva@mail.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/0000-0003-4891-4330</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Ovchinnikova</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="en"><p>Elena G.  Ovchinnikova — researcher, department of biochemistry</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19. Tel .: + 7–48532–98–1–94</p></bio><email xlink:type="simple">elenna.ov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>All-Russian Scientific Research Institute of Butter- and Cheesemaking — Branch of V. M. Gorbatov Federal Research Center for Food Systems of RAS</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>09</day><month>10</month><year>2020</year></pub-date><volume>3</volume><issue>3</issue><fpage>42</fpage><lpage>50</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Myagkonosov D.S., Mordvinova V.A., Delitskaya I.N., Abramov D.V., Ovchinnikova E.G., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Myagkonosov D.S., Mordvinova V.A., Delitskaya I.N., Abramov D.V., Ovchinnikova E.G.</copyright-holder><copyright-holder xml:lang="en">Myagkonosov D.S., Mordvinova V.A., Delitskaya I.N., Abramov D.V., Ovchinnikova E.G.</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/81">https://www.fsjour.com/jour/article/view/81</self-uri><abstract><p>The effect of the type and dose of milk-clotting enzymes (Chy-max® M based on recombinant camel chymosin, Fromase® TL based on Rhizomucor miehei protease) on the physicochemical, functional properties and shelf life of pizza-cheeses was studied. When using a low dose of milk-clotting enzymes (MCE) for milk coagulation (250–1100 IMCU per 100 kg of milk), cheeses were obtained with an increased moisture content (55–57%), excessive acidity (pH 4.8–4.9) and texture defects (incoherent, crumbly, with separation of free moisture). This is due to the formation of a weak curd, which releases moisture poorly during processing. The use of an increased dose of MCE makes it possible to obtain a denser curd, better releasing moisture. Cheese produced with a high dose of milk-clotting enzymes (2000–2800 IMCU per 100 kg of milk) had a lower moisture content (52–53%) and lower acidity (pH 5.0–5.1). The protein matrix is more hydrated in these cheeses, which ensures its better water holding capacity and a more homogeneous and cohesive texture. The use of an increased dose of MCE with a high total proteolytic activity (Fromase) gives undesirable consequences in the form of accelerated proteolysis of cheese mass proteins, rapid loss of functional properties of the cheese, and a decrease in the shelf life of cheese (less than 60 days). Cheese production using an increased dose of MCE with a low level of total proteolytic activity (Chy-max M) allows achieving a low level of proteolysis during cheese ripening and increasing its shelf life.</p></abstract><kwd-group xml:lang="en"><kwd>pizza-cheese</kwd><kwd>rhizomucor miehei</kwd><kwd>camel chymosin</kwd><kwd>proteolysis</kwd><kwd>microstructure</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The article was published as part of the research topic No. 0585–2019–0011 of the state assignment of the V.  M.  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