<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">10.18412/1816-0387-2017-2-161-165</article-id><article-id custom-type="elpub" pub-id-type="custom">catal-451</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>Биокаталитическое получение внеклеточного экзополисахрида – декстрана, продуцируемого клетками Leuconostoc mesenteroides</article-title><trans-title-group xml:lang="en"><trans-title>Biocatalytic Production of Extracellular Exopolysaccharide – Dextran Synthesizing by Leuconostoc mesenteroides Cells</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>Степанов</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepanov</surname><given-names>N. А.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.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>Сенько</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Senko</surname><given-names>О. V.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.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>Ефременко</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Еfremenko</surname><given-names>Е. N.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Московский государственный университет имени М.В. Ломоносова<country>Россия</country></aff><aff xml:lang="en">Lomonosov Moscow State University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>20</day><month>09</month><year>2017</year></pub-date><volume>17</volume><issue>2</issue><fpage>161</fpage><lpage>165</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; LLC "KALVIS", 2017</copyright-statement><copyright-year>2017</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/451">https://www.catalysis-kalvis.ru/jour/article/view/451</self-uri><abstract><p>В статье представлены результаты исследований и сравнительного анализа характеристик процесса получения коммерчески значимого продукта – декстрана из сахарозы при использовании в периодических условиях клеток бактерий Leuconostoc mesenteroides subsp. dextranicum B-5481 в суспензионном или иммобилизованном в криогель поливинилового спирта (ПВС) виде. Показано, что концентрация декстрана при использовании иммобилизованных клеток выше в 1,2 раза в сравнении со свободными клетками при одинаковых условиях процесса. Продемонстрирована высокая продуктивность процесса получения декстрана (4,2 г/(л·ч)) в периодических условиях культивирования иммобилизованных клеток наряду с их продолжительным функционированием без потери метаболической активности как минимум в течение 5 рабочих циклов. Продуктивность разработанного биокатализатора в 5 раз выше, чем клеток Weissella confusa, иммобилизованных в гель альгината кальция, и в 34 раза выше продуктивности клеток Leuconostoc mesenteroides KIBGE HA1, иммобилизованных в полиакриламидный гель. Образцы декстрана, продуцируемого иммобилизованными клетками L. mesenteroides B-5481, имеют в 2 раза меньшую молекулярную массу в сравнении с полимером, продуцируемым свободными клетками, что расширяет спектр возможного применения полисахарида без его дополнительного гидролиза.</p></abstract><trans-abstract xml:lang="en"><p>The article presents results of investigation and comparative analysis of process characteristics of commercially important dextran production from sucrose by using immobilized cells of bacteria Leuconostoc mesenteroides subsp. dextranicum B–5481 in forms of free and immobilized into poly(vinyl alcohol) cryogel. It was shown that dextran concentration was 1.2 times higher up to 1.2 times when immobilized cells were used in comparison with suspended cells under identical process conditions. The high process productivity was revealed (4.2 g/l/h) under batch fermentation conditions for immobilized cells in addition to their prolonged operation activity without any loss of metabolic activity for at least 5 working cycles. In comparison with analogues the productivity of developed biocatalyst was 5 times higher than that of Weissella confusa cells immobilized in calcium alginate gel, and 34-times higher as compared to Leuconostoc mesenteroides KIBGE HA1 cells entrapped into polyacrylamide gel. Samples of dextran produced by immobilized cells L. mesenteroides B -5481 had twice lower molecular weight as compared to the polymer synthesized by free cells. This characteristic expands the range of possible applications of the obtained polysaccharide without need in its additional hydrolysis.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>декстран</kwd><kwd>иммобилизация</kwd><kwd>поливиниловый спирт</kwd><kwd>криогель</kwd><kwd>Leuconostoc mesenteroides</kwd></kwd-group><kwd-group xml:lang="en"><kwd>dextran</kwd><kwd>immobilization</kwd><kwd>poly(vinyl alcohol)</kwd><kwd>cryogel</kwd><kwd>Leuconostoc mesenteroides</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">Vettoria M.H.P.B., Blancoa KC., Cortezia M, de Lima C.J.B., Contieroa J. // Diálogos Ciência. 31 (2012). P. 171-186.</mixed-citation><mixed-citation xml:lang="en">Vettoria M.H.P.B., Blancoa KC., Cortezia M, de Lima C.J.B., Contieroa J. // Diálogos Ciência. 31 (2012). P. 171-186.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Naessens M., Cerdobbel A., Soetaert W., Vandamme E.J. // J. Chem. Technol. Biotechnol. 80 (2005). P. 845—860.</mixed-citation><mixed-citation xml:lang="en">Naessens M., Cerdobbel A., Soetaert W., Vandamme E.J. // J. Chem. Technol. Biotechnol. 80 (2005). P. 845—860.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Aman A., Siddiqui N.N., Qader S.A.U. // Carbohydr. Polymer. 87 (2010). P. 910—915.</mixed-citation><mixed-citation xml:lang="en">Aman A., Siddiqui N.N., Qader S.A.U. // Carbohydr. Polymer. 87 (2010). P. 910—915.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Welman A.D., Maddox I.S. // Trends Biotechnol. 21 (2003). P. 269—274.</mixed-citation><mixed-citation xml:lang="en">Welman A.D., Maddox I.S. // Trends Biotechnol. 21 (2003). P. 269—274.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Moscovici M. // Front Microbiol. 6 (2015). P. 1012.</mixed-citation><mixed-citation xml:lang="en">Moscovici M. // Front Microbiol. 6 (2015). P. 1012.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Milintawisamai N., Niamsanit S, Ngasan C, Pliansinchai U, Weerathaworn P. // Sugar Tech. 11 (2009). P. 196-199.</mixed-citation><mixed-citation xml:lang="en">Milintawisamai N., Niamsanit S, Ngasan C, Pliansinchai U, Weerathaworn P. // Sugar Tech. 11 (2009). P. 196-199.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Efremenko E.N., Nikolskaya A.B., Lyagin I.V., Senko O.V., Stepanov N.A., Maslova O.V., Mamedova F., Varfolomeyev S.D. // Bioresource Technol. 114 (2012). P. 342—348.</mixed-citation><mixed-citation xml:lang="en">Efremenko E.N., Nikolskaya A.B., Lyagin I.V., Senko O.V., Stepanov N.A., Maslova O.V., Mamedova F., Varfolomeyev S.D. // Bioresource Technol. 114 (2012). P. 342—348.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Qader S.A.U., Aman A., Azhar A. // Indian J. Microbiol. 51 (2011). P. 279—282.</mixed-citation><mixed-citation xml:lang="en">Qader S.A.U., Aman A., Azhar A. // Indian J. Microbiol. 51 (2011). P. 279—282.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Srinivas B., Padma P.N. // Int. J. Pharm. Bio Sci. 7 (2016). P. 336—340.</mixed-citation><mixed-citation xml:lang="en">Srinivas B., Padma P.N. // Int. J. Pharm. Bio Sci. 7 (2016). P. 336—340.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Lozinsky V.I., Plieva F.M. // Enzyme Microb. Technol. 23 (1998). P. 227-242.</mixed-citation><mixed-citation xml:lang="en">Lozinsky V.I., Plieva F.M. // Enzyme Microb. Technol. 23 (1998). P. 227-242.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Onilude A.A., Olaoye O., Fadahunsi I.F., Owoseni A., Garuba E.O., Atoyebi T. // IFRJ. 20 (2013). P. 1645-1651.</mixed-citation><mixed-citation xml:lang="en">Onilude A.A., Olaoye O., Fadahunsi I.F., Owoseni A., Garuba E.O., Atoyebi T. // IFRJ. 20 (2013). P. 1645-1651.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Abdel-Azeem H.M., Gehan F., Hassan E.A. // Ann Agr Sci. 54 (2009). P. 307-321.</mixed-citation><mixed-citation xml:lang="en">Abdel-Azeem H.M., Gehan F., Hassan E.A. // Ann Agr Sci. 54 (2009). P. 307-321.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Nuwan P., Piwpan P., Jaturapiree A., Jaturapiree P. // KKU Res J. 22 (2016). P. 366-375.</mixed-citation><mixed-citation xml:lang="en">Nuwan P., Piwpan P., Jaturapiree A., Jaturapiree P. // KKU Res J. 22 (2016). P. 366-375.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Kim D., Robyt J.F., Lee S.Y., Lee J.H., Kim Y.M. // Carbohydr Res. 338 (2003). P. 1183-1189.</mixed-citation><mixed-citation xml:lang="en">Kim D., Robyt J.F., Lee S.Y., Lee J.H., Kim Y.M. // Carbohydr Res. 338 (2003). P. 1183-1189.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Sarwat F.Q., Aman S.A., Ahmed N. // Int. J. Biol. Sci. 4 (2008). P. 379-386.</mixed-citation><mixed-citation xml:lang="en">Sarwat F.Q., Aman S.A., Ahmed N. // Int. J. Biol. Sci. 4 (2008). P. 379-386.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Cortezi M., Monti R., Contiero J. // Afr. J. Biotechnol. 4 (2005). P. 279-285.</mixed-citation><mixed-citation xml:lang="en">Cortezi M., Monti R., Contiero J. // Afr. J. Biotechnol. 4 (2005). P. 279-285.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Santos M., Teixeira J.A., Rodrigues A. // Biochem. Eng. J. 4 (2000). P. 177-188.</mixed-citation><mixed-citation xml:lang="en">Santos M., Teixeira J.A., Rodrigues A. // Biochem. Eng. J. 4 (2000). P. 177-188.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Son M-J., Jang E-K., Kwon O-S., Seo J-H., Kim I-J., Lee I-S., Park S-C., Lee S-P. // Eur. Food Res. Technol. 226 (2008). P. 697—706.</mixed-citation><mixed-citation xml:lang="en">Son M-J., Jang E-K., Kwon O-S., Seo J-H., Kim I-J., Lee I-S., Park S-C., Lee S-P. // Eur. Food Res. Technol. 226 (2008). P. 697—706.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
