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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">From Chemistry Towards Technology Step-By-Step</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">From Chemistry Towards Technology Step-By-Step</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>От химии к технологии шаг за шагом</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="online">2782-1900</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">82563</article-id>
   <article-id pub-id-type="doi">10.52957/27821900_2021_03_36</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Научные статьи</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>Scientific articles</subject>
    </subj-group>
    <subj-group>
     <subject>Научные статьи</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Assessment of changes in the chemical composition of oat husk during pretreatment by autohydrolysis</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Оценка изменения химического состава шелухи овса при проведении предварительной обработки методом автогидролиза</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4883-5325</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Павлов</surname>
       <given-names>Игорь Николаевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Pavlov</surname>
       <given-names>Igor N.</given-names>
      </name>
     </name-alternatives>
     <email>pawlow-in@mail.ru</email>
     <bio xml:lang="ru">
      <p>кандидат технических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of technical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">ФГБОУ ВО Бийский технологический институт (филиал) ФГБОУ ВПО «Алтайский государственный технический университет им. И. И. Ползунова»</institution>
     <city>Бийск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Biysk Technological Institute is a Subsidiary of Polzunov Altai State Technical University</institution>
     <city>Biysk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2021-09-23T00:00:00+03:00">
    <day>23</day>
    <month>09</month>
    <year>2021</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2021-09-23T00:00:00+03:00">
    <day>23</day>
    <month>09</month>
    <year>2021</year>
   </pub-date>
   <volume>2</volume>
   <issue>3</issue>
   <fpage>36</fpage>
   <lpage>45</lpage>
   <history>
    <date date-type="received" iso-8601-date="2021-09-07T00:00:00+03:00">
     <day>07</day>
     <month>09</month>
     <year>2021</year>
    </date>
    <date date-type="accepted" iso-8601-date="2021-09-14T00:00:00+03:00">
     <day>14</day>
     <month>09</month>
     <year>2021</year>
    </date>
   </history>
   <self-uri xlink:href="https://chemintech.ru/en/nauka/article/82563/view">https://chemintech.ru/en/nauka/article/82563/view</self-uri>
   <abstract xml:lang="ru">
    <p>Проведена предварительная обработка автогидролизом биомассы шелухи овса при изменении температуры процесса в интервале 160-220 °С, времени обработки в диапазоне 5-60 мин и при гидромодуле обработки 1:10. Для характеристики условий предварительной обработки использовался фактор жесткости автогидролиза, который изменялся от 2,50 до 5,37. Эффективность проводимого автогидролиза оценивали по изменению химического состава твердой фазы обработанной шелухи овса. Показано, что автогидролиз биомассы шелухи овса при росте жесткости условий обработки приводит к значительному снижению гемицеллюлоз в твердой фазе при достижении на первом этапе фактора жесткости 4,17 и к последующему практически полному удалению. Также на первом этапе происходит незначительное изменение концентрации лигнина и повышение доли целлюлозы в твердой фракции. Дальнейшее повышение жесткости условий на втором этапе при изменении фактора жесткости от 4,17 до 5,37 приводит к накоплению лигнина в твердом остатке до максимального значения 45,7 % в результате протекания реакции конденсации лигнина. Из-за роста содержания лигнина доля целлюлозы в твердой фракции снижается. Эффективность предварительной обработки оценивали по конечному накоплению редуцирующих веществ, полученных в результате ферментативного гидролиза с использованием ферментного комплекса, состоящего из препаратов «Целлолюкс-А» и «Брюзайм BGX». На первом этапе при снижении концентрации гемицеллюлоз доступность целлюлозы для ферментов значительно увеличивается и выход редуцирующих веществ достигает максимального значения 66,7 % при факторе жесткости автогидролиза 4,17. На втором этапе повышение жесткости условий обработки до значения фактора 5,37 приводит к накоплению лигнина в твердом остатке, что ограничивает действие ферментов. В результате заметно сокращается выход редуцирующих веществ до 30,0 %.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>We carry out the preliminary processing of oat husk biomass by autohydrolysis. There was a change in the process temperature in the range of 160-220 °C, the processing time in the range of 5-60 minutes and the treatment hydromodule 1:10. To characterize the pre-treatment conditions, we use the autohydrolysis severity factor, which varied from 2.50 to 5.37. We assessed the effectiveness of the autohydrolysis performed by changing the chemical composition of the solid phase of the treated oat husk. The auto-hydrolysis of oat husk biomass with increasing hardness of the treatment conditions leads to a significant decline of hemicelluloses in the solid phase when the severity factor reaches 4.17 at the first stage and to a subsequent almost complete removal. Also, at the first stage, there is a slight change in the concentration of lignin and an increase in the proportion of cellulose in the solid fraction. A further increase in the severity of the conditions at the second stage with a change in the severity factor from 4.7 to 5.37 leads to the accumulation of lignin in the solid residue up to a maximum value of 45.7% as a result of the lignin condensation reaction. Due to the increase in the lignin content, the proportion of cellulose in the solid fraction decreases. The authors assessed the effectiveness of the pretreatment by the final accumulation of reducing substances obtained as a result of enzymatic hydrolysis using an enzyme complex consisting of the preparations &quot;Cellolux-A&quot; and &quot;Bruzime BGX. At the first stage, with a decrease in the concentration of hemicelluloses, the availability of cellulose for enzymes significantly increases and the yield of reducing substances reaches a maximum value of 66.7% with a severity factor of autohydrolysis of 4.17. At the second stage, an increase of the severity of the processing conditions to a value of a factor of 5.37 leads to the accumulation of lignin in the fixed residue, which limits the effect of enzymes. It reduced the yield of substances during enzymatic hydrolysis to 30.0%.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>шелуха овса</kwd>
    <kwd>предварительная обработка</kwd>
    <kwd>автогидролиз</kwd>
    <kwd>гидротермическая обработка</kwd>
    <kwd>целлюлоза</kwd>
    <kwd>ферментативный гидролиз</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>oat husk</kwd>
    <kwd>pretreatment</kwd>
    <kwd>auto-hydrolysis</kwd>
    <kwd>hydrothermal treatment</kwd>
    <kwd>cellulose</kwd>
    <kwd>enzymatic hydrolysis</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Исследование выполнено в рамках госзадания ИПХЭТ СО РАН &quot;Фундаментальные основы создания интегрированной технологии переработки легковозобновляемого непищевого растительного сырья в востребованные экономикой РФ продукты&quot; с номером госрегистрации проекта 121061500030-3.</funding-statement>
    <funding-statement xml:lang="en">The research was carried out within the framework of the state task of IPCET SB RAS &quot;Fundamental bases of creation of integrated technology for processing light renewable non-food plant raw materials into products demanded by the Russian economy&quot; with the state registration number of the project 121061500030-3.</funding-statement>
   </funding-group>
  </article-meta>
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