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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.2021.244</article-id><article-id custom-type="elpub" pub-id-type="custom">spfp-244</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>ФИЗИЧЕСКИЕ И ХИМИЧЕСКИЕ МЕТОДЫ ПЕРЕРАБОТКИ СЕЛЬХОЗПРОДУКЦИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICAL AND CHEMICAL METHODS OF FARM RAW MATERIAL PROCESSING</subject></subj-group></article-categories><title-group><article-title>Биокатализ крахмала кукурузы термостабильной α-амилазой в двухшнековом экструдере</article-title><trans-title-group xml:lang="en"><trans-title>Biocatalysis of Corn Starch with Thermostable α-amylase in Twin-screw Extruder</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9483-5209</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шариков</surname><given-names>Антон Юрьевич</given-names></name><name name-style="western" xml:lang="en"><surname>Sharikov</surname><given-names>Anton Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Отдел оборудования пищевых производств и мембранных технологий</p></bio><email xlink:type="simple">anton.sharikov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6492-7070</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванов</surname><given-names>Виктор Витальевич</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>Viktor V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ведущий научный сотрудник</p></bio><email xlink:type="simple">ivanov.v.v@li.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/0000-0002-5138-6746</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Амелякина</surname><given-names>Мария Валентиновна</given-names></name><name name-style="western" xml:lang="en"><surname>Amelyakina</surname><given-names>Maria V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Научный сотрудник</p></bio><email xlink:type="simple">masha.am@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/0000-0001-9097-3946</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Середа</surname><given-names>Анна Сергеевна</given-names></name><name name-style="western" xml:lang="en"><surname>Sereda</surname><given-names>Anna S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Старший научный сотрудник</p></bio><email xlink:type="simple">as.sereda@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6078-9280</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Поливановская</surname><given-names>Дарья Викторовна</given-names></name><name name-style="western" xml:lang="en"><surname>Polivanovskaya</surname><given-names>Daria V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Младший научный сотрудник</p></bio><email xlink:type="simple">dashpol@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт пищевой биотехнологии - филиал ФГБУН "Федеральный исследовательский центр питания, биотехнологии и безопасности пищи"</institution><country>Россия</country></aff><aff xml:lang="en"><institution>VNIIPBT - branch of Federal State Budgetary Scientific Institution «Federal Research Centre of Nutrition, Biotechnology and Food Safety</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>27</day><month>11</month><year>2021</year></pub-date><volume>0</volume><issue>4</issue><fpage>64</fpage><lpage>75</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шариков А.Ю., Иванов В.В., Амелякина М.В., Середа А.С., Поливановская Д.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Шариков А.Ю., Иванов В.В., Амелякина М.В., Середа А.С., Поливановская Д.В.</copyright-holder><copyright-holder xml:lang="en">Sharikov A.Y., Ivanov V.V., Amelyakina M.V., Sereda A.S., Polivanovskaya D.V.</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/244">https://www.spfp-mgupp.ru/jour/article/view/244</self-uri><abstract><p>Традиционные технические решения в области ферментативного гидролиза крахмала и крахмалсодержащего сырья предполагают многостадийную водно-ферментативную обработку субстрата, включая стадии разваривания, разжижения, декстринизации, упаривания и сушки, в случае производства готовой продукции в порошкообразном виде. В качестве альтернативы такого многоэтапного процесса предлагается использование экструзионной техники, которая помимо использования в производстве продуктов питания, ингредиентов и кормов находит применение в качестве химических реакторов, заменяя традиционные емкостные реакторы периодического действия. Проведено исследование влияния гидротермомеханических режимных параметров, влагосодержания и дозировки термостабильного амилолитического фермента на процесс экструзии крахмала и степень его гидролиза в камере двухшнекового экструдера. Установлено, что температурный диапазон 112-122 °С является оптимальным для осуществления процесса биокатализа. Максимальное значение декстрозного эквивалента 13,6 достигнуто при влагосодержании 36% и дозировке α-амилазы 6 ед.АС/ г крахмала. Показано, что декстрозный эквивалент при экструзии крахмала с данным количеством фермента даже при влажности 20% составляет 12,6. Остаточная амилолитическая активность экструдатов варьируется в диапазоне от 0,2 до 0,55 ед. АС в зависимости от начальной подачи фермента в камеру экструдера, что свидетельствует о неполной инактивации α-амилазы в процессе экструзии даже при температурных режимах, превышающих оптимум действия α-амилазы. Установлено, что в отличие от экструдирования крахмала без фермента увеличение влагосодержания при внесении α-амилазы способствует росту растворимости и снижению влагоудерживающей способности экструдатов. Результаты исследования показали возможность проведения непрерывной биокаталитической реакции гидролиза крахмала непосредственно в камере экструдера, что позволяет получать гидролизаты с низкой влажностью в одну стадию, исключая этапы водно-тепловой обработки низкоконцентрированных крахмальных сред, их упаривание и последующую распылительную сушку.</p></abstract><trans-abstract xml:lang="en"><p>Traditional technical solutions in the field of enzymatic hydrolysis of starch and starch-containing raw materials involve multi-stage water-enzymatic treatment of the substrate including the stages of cooking, liquefaction, dextrinization, evaporation and drying. As an alternative to this multistage technology, the use of extruders is proposed, which, in addition to the production of food, ingredients and feed, can be used as chemical reactors, replacing traditional batch reactors. The study of the influence of operating extrusion parameters, moisture content and dosage of a thermostable amylolytic enzyme on the process of starch extrusion and the degree of its hydrolysis in the chamber of a twin-screw extruder was carried out. It was found that the temperature range 112-122 ° C is optimal for the biocatalysis process. The maximum dextrose equivalent of 13.6 was achieved with a moisture content of 36% and a dosage of α-amylase of 6 amylolytic units per 1 g of starch. It has been shown that the dextrose equivalent during the extrusion of starch with a given amount of enzyme at a moisture content of 20% was 12.6. The residual amylolytic activity of the extrudates varied in the range from 0.2 to 0.55 units and depended on the initial enzyme dosage. It indicates incomplete inactivation of α-amylase during extrusion even at temperature conditions exceeding the α-amylase temperature optimum. It was found that, in contrast to the extrusion of starch without an enzyme, an increase in the moisture content upon the addition of α-amylase promotes an increase in solubility and a decrease in the water-holding capacity of extrudates. The results of the study showed the possibility of carrying out a continuous biocatalytic reaction of starch hydrolysis directly in the extruder chamber. It makes it possible to obtain hydrolysates with low moisture content in one stage, excluding the stages of water-heat treatment of low-concentrated starch media, their evaporation and subsequent spray drying.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>крахмал</kwd><kwd>экструзия</kwd><kwd>гидролиз</kwd><kwd>фермент</kwd><kwd>амилаза</kwd><kwd>высокие концентрации</kwd><kwd>декстрозный эквивалент</kwd></kwd-group><kwd-group xml:lang="en"><kwd>starch</kwd><kwd>extrusion</kwd><kwd>hydrolysis</kwd><kwd>enzyme</kwd><kwd>amylase</kwd><kwd>high concentrations</kwd><kwd>dextrose equivalent</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">Ананских, В.В., &amp; Шлеина, Л.Д. (2017). О возможности получения мальтодекстринов из кукурузной муки. Хранение и переработка сельхозсырья, (11), 9-13. 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