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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">pharmjournal</journal-id><journal-title-group><journal-title xml:lang="ru">Разработка и регистрация лекарственных средств</journal-title><trans-title-group xml:lang="en"><trans-title>Drug development &amp; registration</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2305-2066</issn><issn pub-type="epub">2658-5049</issn><publisher><publisher-name>LLC «CPHA»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33380/2305-2066-2026-15-3-2347</article-id><article-id custom-type="elpub" pub-id-type="custom">pharmjournal-2435</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>ФАРМАЦЕВТИЧЕСКАЯ ТЕХНОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHARMACEUTICAL TECHNOLOGY</subject></subj-group></article-categories><title-group><article-title>Выживаемость бифидобактерий в альгинат-хитозановых микрокапсулах с инулином при моделировании условий желудочно-кишечного тракта</article-title><trans-title-group xml:lang="en"><trans-title>Survival of bifidobacteria in alginate-chitosan microcapsules with inulin under simulated gastrointestinal conditions</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-3062-1855</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Андрюшков</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Andryushkov</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, г. Санкт-Петербург, вн. тер. г. муниципальный округ Аптекарский остров, ул. Профессора Попова, д. 14, лит. А</p></bio><bio xml:lang="en"><p>14A, Professora Popova str., Aptekarsky Ostrov Municipal Okrug, Saint Petersburg, 197022</p></bio><email xlink:type="simple">andryushkov.pavel@pharminnotech.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/0000-0002-8049-6207</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Марченко</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Marchenko</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, г. Санкт-Петербург, вн. тер. г. муниципальный округ Аптекарский остров, ул. Профессора Попова, д. 14, лит. А</p></bio><bio xml:lang="en"><p>14A, Professora Popova str., Aptekarsky Ostrov Municipal Okrug, Saint Petersburg, 197022</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-1539-8013</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черных</surname><given-names>Т. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernykh</surname><given-names>T. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, г. Санкт-Петербург, вн. тер. г. муниципальный округ Аптекарский остров, ул. Профессора Попова, д. 14, лит. А</p></bio><bio xml:lang="en"><p>14A, Professora Popova str., Aptekarsky Ostrov Municipal Okrug, Saint Petersburg, 197022</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-2372-2174</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Буденштейн</surname><given-names>Б. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Budenshtein</surname><given-names>B. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197022, г. Санкт-Петербург, вн. тер. г. муниципальный округ Аптекарский остров, ул. Профессора Попова, д. 14, лит. А</p></bio><bio xml:lang="en"><p>14A, Professora Popova str., Aptekarsky Ostrov Municipal Okrug, Saint Petersburg, 197022</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский государственный химико-фармацевтический университет» Министерства здравоохранения Российской Федерации (ФГБОУ ВО СПХФУ Минздрава России)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg State Chemical and Pharmaceutical University (SPCPU)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>09</day><month>09</month><year>2026</year></pub-date><volume>15</volume><issue>3</issue><fpage>99</fpage><lpage>106</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Андрюшков П.А., Марченко А.Л., Черных Т.Ф., Буденштейн Б.Г., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Андрюшков П.А., Марченко А.Л., Черных Т.Ф., Буденштейн Б.Г.</copyright-holder><copyright-holder xml:lang="en">Andryushkov P.A., Marchenko A.L., Chernykh T.F., Budenshtein B.G.</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.pharmjournal.ru/jour/article/view/2435">https://www.pharmjournal.ru/jour/article/view/2435</self-uri><abstract><sec><title>Введение</title><p>Введение. Низкая выживаемость пробиотических микроорганизмов при прохождении через желудочно-кишечный тракт (ЖКТ) существенно ограничивает терапевтическую эффективность пероральных пробиотических препаратов. Включение пребиотика инулина в матрицу микрокапсул и применение различных типов твердых капсул может дополнительно повысить защиту бифидобактерий, однако комплексное сравнение этих факторов на единой модели не проводилось.</p></sec><sec><title>Цель</title><p>Цель. Оценить влияние инулина в составе альгинат-хитозановых микрокапсул и типа твердой капсулы (желатиновая/кишечнорастворимая) на выживаемость B. bifidum при моделировании условий ЖКТ.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Сформированы шесть экспериментальных образцов: микрокапсулы (альгинат + хитозан) без инулина и с инулином в желатиновых и кишечнорастворимых капсулах, а также контрольные группы (порошок бифидумбактерина в желатиновой и кишечнорастворимой капсулах). Моделирование условий ЖКТ проведено в соответствии с ОФС.1.4.2.0014 Государственной фармакопеи РФ XV издания: кислотная стадия (0,1 М HCl, pH 1,2, 2 ч) с последующим переходом к буферной стадии (pH 6,8). Выживаемость определяли методом подсчета колониеобразующих единиц (КОЕ) на среде МРС-5.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. Максимальную выживаемость показал образец «микрокапсулы с инулином в кишечнорастворимой капсуле». Микрокапсулы с инулином в желатиновой капсуле обеспечили аналогичную выживаемость. Микрокапсулы без инулина продемонстрировали небольшое снижение титра клеток (кишечнорастворимая и желатиновая капсула). Порошок бифидумбактерина в желатиновой капсуле характеризовался редукцией жизнеспособных КОЕ на 2 порядка, а в кишечнорастворимой капсуле без микрокапсулирования выживаемость снизилась на 1 lg КОЕ/капсулу.</p></sec><sec><title>Заключение</title><p>Заключение. Альгинат-хитозановое микрокапсулирование является основным фактором защиты B. bifidum. Включение инулина в матрицу дополнительно повышает выживаемость. Сочетание микрокапсулирования с инулином и кишечнорастворимой капсулы обеспечивает максимальную защиту, однако статистически значимого преимущества кишечнорастворимой капсулы перед желатиновой на фоне микрокапсулирования с инулином не выявлено (p &gt; 0,05).</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Low viability of probiotic microorganisms during gastrointestinal (GI) transit substantially limits the therapeutic efficacy of oral probiotic formulations. Incorporating the prebiotic inulin into the microcapsule matrix and employing different types of hard capsules may further enhance bifidobacterial protection; however, a comprehensive comparison of these factors using a single GI model has not been conducted.</p></sec><sec><title>Aim</title><p>Aim. To evaluate the effect of inulin incorporation into alginate-chitosan microcapsules and the type of hard capsule (gelatin / enteric-coated) on the viability of B. bifidum under simulated GI conditions.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Six experimental formulations were prepared: microcapsules (alginate + chitosan) without and with inulin, placed in gelatin and enteric-coated capsules, as well as control groups (bifidumbacterin powder in gelatin and enteric-coated capsules). GI simulation was performed according to the State Pharmacopoeia of the Russian Federation (XV edition, General Monograph 1.4.2.0014): acid stage (0.1 M HCl, pH 1.2, 2 h) followed by buffer stage (pH 6.8). Viability was assessed by Colony-Forming Unit (CFU) counting on MRS-5 agar.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. The highest survival rate was observed in the sample "microcapsules with inulin in an enteric-coated capsule". Microcapsules with inulin in a gelatin capsule provided comparable survival. Microcapsules without inulin demonstrated a slight reduction in cell titer (both enteric-coated and gelatin capsules). Bifidumbacterin powder in a gelatin capsule was characterized by a reduction of viable CFU by 2 orders of magnitude, while in an enteric-coated capsule without microencapsulation, survival decreased by 1 lg CFU/capsule.</p></sec><sec><title>Conclusion</title><p>Conclusion. Alginate-chitosan microencapsulation is the main factor protecting B. bifidum. Incorporation of inulin into the matrix additionally increases survival. The combination of microencapsulation with inulin and an enteric-coated capsule provides maximum protection; however, no statistically significant advantage of the enteric-coated capsule over the gelatin capsule was detected in the context of microencapsulation with inulin (p &gt; 0.05).</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>пробиотики</kwd><kwd>пребиотики</kwd><kwd>синбиотики</kwd><kwd>бифидобактерии</kwd><kwd>микрокапсулирование</kwd><kwd>альгинат натрия</kwd><kwd>хитозан</kwd><kwd>инулин</kwd></kwd-group><kwd-group xml:lang="en"><kwd>probiotics</kwd><kwd>prebiotics</kwd><kwd>synbiotics</kwd><kwd>bifidobacteria</kwd><kwd>microencapsulation</kwd><kwd>sodium alginate</kwd><kwd>chitosan</kwd><kwd>inulin</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">Раскина К. В., Мартынова Е. Ю., Фатхутдинов И. Р., Потешкин Ю. Е. 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