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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">catal</journal-id><journal-title-group><journal-title xml:lang="ru">Катализ в промышленности</journal-title><trans-title-group xml:lang="en"><trans-title>Kataliz v promyshlennosti</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1816-0387</issn><issn pub-type="epub">2413-6476</issn><publisher><publisher-name>LLC "KALVIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18412/1816-0387-2015-5-54-59</article-id><article-id custom-type="elpub" pub-id-type="custom">catal-242</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>БИОКАТАЛИЗ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOCATALYSIS</subject></subj-group></article-categories><title-group><article-title>Характеристика свойств и оценка эффективности биокатализатора на основе иммобилизованной грибной амилазы</article-title><trans-title-group xml:lang="en"><trans-title>Properties and Efficiency of a Biocatalyst Based on Immobilized Fungal Amyl</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>Распопова</surname><given-names>Е.А.</given-names></name><name name-style="western" xml:lang="en"><surname>Raspopova</surname><given-names>E.A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры биотехнологии</p></bio><email xlink:type="simple">dtgirl62@gmail.com</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>Красноштанова</surname><given-names>А.А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krasnoshtanova</surname><given-names>A.A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р хим. наук, доцент, проф.</p></bio><email xlink:type="simple">dtgirl62@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Российский химико-технологический университет имени Д.И. Менделеева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Mendeleyev University of Chemical Technology of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>13</day><month>09</month><year>2015</year></pub-date><volume>15</volume><issue>5</issue><fpage>54</fpage><lpage>59</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; LLC "KALVIS", 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">LLC "KALVIS"</copyright-holder><copyright-holder xml:lang="en">LLC "KALVIS"</copyright-holder><license xlink:href="https://www.catalysis-kalvis.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.catalysis-kalvis.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.catalysis-kalvis.ru/jour/article/view/242">https://www.catalysis-kalvis.ru/jour/article/view/242</self-uri><abstract><p>Препараты на основе нативных ферментов имеют ограниченное промышленное применение вследствие их нестабильности и чувствительности к изменениям рН, температуры и других внешних факторов. Поэтому актуально создание биокатализаторов на основе иммобилизованных  ферментов, которые более стабильны и, следовательно, более эффективны в практическом приложении. С целью стабилизации грибной  амилазы (КФ 3.2.1.1.) применена ковалентная иммобилизация фермента на хитозансодержащую целлюлозу. Показано, что термическая стабильность иммобилизованной амилазы по сравнению с нативной возросла в 3,5 раза, повысилась устойчивость к рН инактивации. Снижение значения константы скорости инактивации иммобилизованного фермента в сравнении с нативным указывает на повышение его стабильности за счет стерических факторов, обусловленных образованием азометиновых связей с целлюлозой и хитозаном. Показано, что при использовании иммобилизованного ферментного препарата вместо нативной амилазы выход продукта в гидролизе ячменного солода увеличивается в 1,5 раза, что обеспечивает возможность его практического применения в пищевой промышленности.</p></abstract><trans-abstract xml:lang="en"><p>Preparations based on native enzymes have found limited industrial application because of their instability and sensitivity to  changes in pH, temperature, and other external factors. Therefore, the acute task is to develop biocatalysts based on immobilized enzymes, which are more stable and therefore more effective in the practice. To stabilize the fungal amylase (KF 3.2.1.1.), we applied the covalent immobilization of the enzyme on chitosan-containing cellulose. It is shown that in comparison with native amylase, the thermal stability of the immobilized amylase increased 3,5-fold, and the resistance against pH inactivation increased as well. The decrease in the rate constants of inactivation of the immobilized enzyme indicates the increase in its stability due to steric factors associated with the formation of azomethine bonds with cellulose and chitosan. It is shown that when using an immobilized enzyme preparation in place of the native amylase, the product yield of the hydrolysis  of barley malt  increases by 1,5 times, which makes it of practical use in the food industry.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>амилаза</kwd><kwd>иммобилизация</kwd><kwd>стабилизация</kwd><kwd>хитозансодержащая целлюлоза</kwd></kwd-group><kwd-group xml:lang="en"><kwd>amylase</kwd><kwd>immobilization</kwd><kwd>stabilization</kwd><kwd>chitosan-containing cellulose</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">Raushan Kumar Singh, Manish Kumar Tiwari, Ranjitha Singh, Jung-Kul Lee// International Journal of Molecular Sciences. 2013. No 14. P. 1232—1277.</mixed-citation><mixed-citation xml:lang="en">Raushan Kumar Singh, Manish Kumar Tiwari, Ranjitha Singh, Jung-Kul Lee// International Journal of Molecular Sciences. 2013. No 14. 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