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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">meat</journal-id><journal-title-group><journal-title xml:lang="en">Theory and practice of meat processing</journal-title><trans-title-group xml:lang="ru"><trans-title>Теория и практика переработки мяса</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2414-438X</issn><issn pub-type="epub">2414-441X</issn><publisher><publisher-name>ФГБНУ «Федеральный научный центр пищевых систем им. В.М. Горбатова» РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21323/2414-438X-2016-1-1-19-24</article-id><article-id custom-type="elpub" pub-id-type="custom">meat-7</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>STUDY OF SODIUM, POTASSIUM, AND CALCIUM SALTS INFLUENCE ON PROTEIN STABILITY BY DIFFERENTIAL SCANNING CALORIMETRY</article-title><trans-title-group xml:lang="ru"><trans-title>ИЗУЧЕНИЕ ВЛИЯНИЯ СОЛЕЙ НАТРИЯ, КАЛИЯ И КАЛЬЦИЯ НА СТАБИЛЬНОСТЬ БЕЛКОВ МЕТОДОМ ДИФФЕРЕНЦИАЛЬНОЙ СКАНИРУЮЩЕЙ КАЛОРИМЕТРИИ</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>Туниева</surname><given-names>Е. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Tunieva</surname><given-names>E. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук, ведущий научный сотрудник</p><p>109316, г. Москва, ул. Талалихина 26</p><p>Тел.: 8(495)676-71-11 </p></bio><bio xml:lang="en"><p>PhD in technical sciences, leading research scientist</p><p>109316, Moscow, Talalikhina str., 26</p></bio><email xlink:type="simple">lenatk@bk.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>Дедерер</surname><given-names>И.</given-names></name><name name-style="western" xml:lang="en"><surname>Dederer</surname><given-names>I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кульмбах, E.-C.-Baumann-Straße, 20</p></bio><bio xml:lang="en"><p>Department of Safety and Quality of Meat, Kulmbach</p><p>Dr.-Ing.,</p><p>D-95326 Kulmbach, E.-C.-Baumann-Straße, 20</p><p>Ph: +49 9221 803 276 </p></bio><email xlink:type="simple">irina.dederer@mri.bund.de</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «ВНИИМП им. В.М. Горбатова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>The V.M. Gorbatov All-Russian Meat Research Institute, Moscow</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт Макса Рубнера (MRI), Германия; &#13;
Институт по исследованию безопасности и качества мяса</institution><country>Германия</country></aff><aff xml:lang="en"><institution>Max Rubner Institute (MRI), Kulmbach</institution><country>Germany</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>04</day><month>06</month><year>2016</year></pub-date><volume>1</volume><issue>1</issue><fpage>19</fpage><lpage>24</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Tunieva E.K., Dederer I., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Туниева Е.К., Дедерер И.</copyright-holder><copyright-holder xml:lang="en">Tunieva E.K., Dederer I.</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.meatjournal.ru/jour/article/view/7">https://www.meatjournal.ru/jour/article/view/7</self-uri><abstract><p>Abstract </p><p>Study of protein stability depending on the various technological factors allows to directionally adjust the physicochemical properties of raw meat and the quality of finished meat products. The paper investigates the possibility of using the DSC to study the influence of monovalent and divalent salts on protein thermal stability. In order to determine the effect of sodium chloride and its substitutes, potassium and calcium salts, on the thermal stability of proteins, the studies were carried out with grinded pork longissimus muscle samples salted with sodium chloride at level of 2.0% and with salt compositions containing reduced by 50% level of sodium chloride (a mixture of sodium and potassium chlorides; a mixture of sodium, potassium, and calcium chlorides) using the differential scanning calorimeter DSC Q 2000 in the temperature range of 5 °C to 100 °C and the temperature change rate of 1 K/min. It was found that the addition of potassium chloride instead of 50% of sodium chloride had no significant effect on actin and myosin resistance to thermal denaturation. Meat salting using the mixture of sodium, potassium, and calcium chlorides resulted in decrease of myofibrillar proteins stability indicating the destabilizing effect of calcium on actin and myosin. A negative correlation between the magnitude of the ionic strength and the temperature of myosin and actin denaturation has been found. The correlation coefficients were minus 0.99 and minus 0.95 for myosin and actin respectively. Reduction of denaturation temperature for myofibrillar proteins in the presence of calcium chloride opens perspectives to study the possibility of heat treatment at lower temperatures for meat products with reduced sodium content.</p></abstract><trans-abstract xml:lang="ru"><p>Аннотация </p><p>Изучение стабильности белков в зависимости от различных технологических факторов позволяет направленно корректировать физико-химические свойства мяса и качество готовой продукции. В статье представлены возможности использования ДСК для изучения влияния моно- и дивалентных солей на стабильность белков к термической обработке. С целью установления влияния хлорида натрия и его заменителей – солей калия и кальция на термостабильность белков были проведены исследования измельченных образцов длиннейшей мышцы свинины, посоленных поваренной солью в количестве 2,0% и композициями солей с пониженным на 50% содержанием хлорида натрия – смесь хлоридов натрия и калия; смесь хлоридом натрия, калия и кальция на дифференциальном сканирующем калориметре DSC Q 2000, с пределами изменения температур от 5 °C до 100 °C и скоростью изменения температуры - 1К/мин. Установлено, что внесение хлорида калия взамен 50% поваренной соли не оказывало существенного влияния на стабильность актина и миозина к тепловой денатурации. Посол мяса композицией со смесью хлоридов натрия, калия и кальция приводил к снижению устойчивости миофибриллярных белков, что свидетельствовало о дестабилизирующем эффекте кальция на актин и миозин. Выявлена отрицательная корреляционная зависимость между величиной ионной силы и температурой денатурации миозина и актина. Коэффициенты корреляции составили для миозина - минус 0,99, для актина - минус 0,95. Снижение температуры денатурации миофибриллярных белков в присутствии хлорида кальция открывает перспективы для проведения исследований, направленных на обоснование возможности проведения тепловой обработки мясной продукции с пониженным содержанием натрия при более низких температурах.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дифференциальная сканирующая калориметрия</kwd><kwd>актин</kwd><kwd>миозин</kwd><kwd>температура денатурации белков</kwd></kwd-group><kwd-group xml:lang="en"><kwd>differential scanning calorimetry</kwd><kwd>actin</kwd><kwd>myosin</kwd><kwd>protein denaturation temperature</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">Karunakar, B. Specific heat and thermal conductivity of shrimp meat / B. Karunakar, S.K. Mishra, S. 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