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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">vuzbiochemi</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Прикладная химия и биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Universities. Applied Chemistry and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-2925</issn><issn pub-type="epub">2500-1558</issn><publisher><publisher-name>ИРНИТУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/achb.990</article-id><article-id custom-type="edn" pub-id-type="custom">BJADRE</article-id><article-id custom-type="elpub" pub-id-type="custom">vuzbiochemi-1514</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>ФИЗИКО-ХИМИЧЕСКАЯ БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICOCHEMICAL BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Сравнительная оценка ферментных препаратов для конверсии предобработанной шелухи овса</article-title><trans-title-group xml:lang="en"><trans-title>Comparative evaluation of enzyme cocktails for conversion of pretreated oat hulls</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1593-7982</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кащеева</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kashcheyeva</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кащеева Екатерина Ивановна, к.т.н., старший научный сотрудник</p><p>659322, г. Бийск, ул. Социалистическая, 1</p></bio><bio xml:lang="en"><p>Ekaterina I. Kashcheyeva, Cand. Sci. (Engineering), Senior Researcher</p><p>1, Sotsialisticheskaya St., Biysk, 659322</p></bio><email xlink:type="simple">massl@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/0000-0002-1628-0815</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Будаева</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Budaeva</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Будаева Вера Владимировна, к.х.н., доцент, заведующий лабораторией, ведущий научный сотрудник</p><p>659322, г. Бийск, ул. Социалистическая, 1</p></bio><bio xml:lang="en"><p>Vera V. Budaeva, Cand. Sci. (Chemistry), Associate Professor, Head of the Laboratory, Leading Researcher</p><p>1, Sotsialisticheskaya St., Biysk, 659322</p></bio><email xlink:type="simple">budaeva@ipcet.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/0000-0002-9630-6332</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Золотухин</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Zolotukhin</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Золотухин Владимир Николаевич, к.т.н., старший научный сотрудник</p><p>659322, г. Бийск, ул. Социалистическая, 1</p></bio><bio xml:lang="en"><p>Vladimir N. Zolotukhin, Cand. Sci. (Engineering), Senior Researcher</p><p>1, Sotsialisticheskaya St., Biysk, 659322</p></bio><email xlink:type="simple">zolotukhin_vn@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт проблем химико-энергетических технологий СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>07</day><month>10</month><year>2025</year></pub-date><volume>15</volume><issue>3</issue><fpage>347</fpage><lpage>356</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кащеева Е.И., Будаева В.В., Золотухин В.Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Кащеева Е.И., Будаева В.В., Золотухин В.Н.</copyright-holder><copyright-holder xml:lang="en">Kashcheyeva E.I., Budaeva V.V., Zolotukhin V.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://vuzbiochemi.elpub.ru/jour/article/view/1514">https://vuzbiochemi.elpub.ru/jour/article/view/1514</self-uri><abstract><p>Ферментативный гидролиз предварительно обработанного лигноцеллюлозного сырья с целью получения сбраживаемых сахаров является одним из критических этапов в технологии производства продуктов биосинтеза с добавленной стоимостью. В данной работе проводилась сравнительная оценка ферментных препаратов и композиций на их основе для конверсии продукта азотнокислой обработки шелухи овса. Гидролиз осуществлялся при начальной концентрации субстрата 30 г/л, рН 4,7 и температуре (46±2) °С. Сравнительной оценке подвергались три ферментных препарата, полученные от разных производителей: «Агроцелл плюс» (ООО «Агрофермент», Россия), «Целлолюкс-А» (ООО ПО «Сиббиофарм», Россия), «Ультрафло Макс» (Novozymes A/S, Дания). Путем сравнения эффективности индивидуальных ферментных препаратов установлено, что выход редуцирующих веществ от массы субстрата составляет 53, 40 и 51% соответственно. Добавление к ферментным препаратам «Агроцелл Плюс» или «Целлолюкс-А» с высокой целлюлазной активностью дополнительной β-глюканазы («Ультрафло Макс») приводит к увеличению выхода редуцирующих веществ в 1,3–1,5 раза. Максимальный выход редуцирующих веществ 72%, что соответствует 99% гидролиза доступной части субстрата, наблюдается при гидролизе композицией из трех ферментных препаратов. Методом растровой электронной микроскопии субстрата до и после гидролиза подтверждена эффективность применения композиций и установлено различие между остатками фрагментированного субстрата после гидролиза индивидуальными препаратами и мультиэнзимными композициями в пользу последних. Все полученные гидролизаты продукта азотнокислой обработки шелухи овса характеризуются как глюкозные: вклад глюкозы в общую концентрацию редуцирующих веществ составляет 85–91%, что позволяет предположить их успешное использование для биосинтеза.</p></abstract><trans-abstract xml:lang="en"><p>The enzymatic hydrolysis of pretreated lignocellulosic feedstock is a critical step in the production of value-added biosynthesis products. This work presents a comparative evaluation of commercial enzyme preparations and their combinations for converting oat hulls following nitric acid pretreatment. Hydrolysis was carried out at an initial substrate concentration of 30 g/L, pH 4.7, and a temperature of (46±2) °C. The study evaluated three enzyme preparations from different manufacturers, including Agrocell Plus (Agroferment LLC, Russia), Cellolux-A (Sibbiofarm LLC, Russia), and Ultraflo Max (Novozymes A/S, Denmark). The evaluation of the individual preparations revealed that the yield of reducing substances from the substrate mass was 53%, 40%, and 51%, respectively. The addition of supplementary β-glucanase (Ultraflo Max) to the enzyme preparations Agrocell Plus or Cellolux-A, which exhibit high cellulase activity, resulted in a 1.3–1.5-fold increase in reducing substance yield. The maximum yield of reducing substances of 72%, corresponding to 99% hydrolysis of the available substrate portion, was observed during hydrolysis using a combination of all three enzyme preparations. Scanning electron microscopy of the substrate before and after hydrolysis confirmed the effectiveness of the mixed preparations and revealed a difference in the residual fragmented substrate after hydrolysis by the individual preparations versus the multi-enzyme compositions, in favor of the latter. All hydrolysates obtained from the nitric acid-pretreated oat hulls were characterized as glucose-based, with the total concentration of glucose amounting to 85–91%. This composition suggests a high potential for successful use in subsequent biosynthesis processes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>шелуха овса</kwd><kwd>кислотная предварительная обработка</kwd><kwd>ферментативный гидролиз</kwd><kwd>мультиэнзимная композиция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>oat hulls</kwd><kwd>acid pretreatment</kwd><kwd>enzymatic hydrolysis</kwd><kwd>multi-enzyme composition</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Минобрнауки в рамках госзадания ИПХЭТ СО РАН (код научной темы FUFE-2024-0008, регистрационный номер 124021200031-4).</funding-statement><funding-statement xml:lang="en">The Ministry of Science and Higher Education of the Russian Federation supported the study under project no. 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