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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">izvkgtu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия КГТУ</journal-title><trans-title-group xml:lang="en"><trans-title>KSTU News</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1997-3071</issn><publisher><publisher-name>Калининградский государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.46845/1997-3071-2025-79-99-109</article-id><article-id custom-type="elpub" pub-id-type="custom">izvkgtu-181</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>ТЕХНИКА И ТЕХНОЛОГИЯ ПИЩЕВЫХ ПРОИЗВОДСТВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PROCESSES AND TECHNOLOGY OF FOOD MANUFACTURING</subject></subj-group></article-categories><title-group><article-title>Исследование термически индуцированных структурных превращений D-маннита методами молекулярной спектроскопии</article-title><trans-title-group xml:lang="en"><trans-title>Study of thermal induced structural transformations of D-mannitol using molecular spectroscopy methods</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0880-5474</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черепанов</surname><given-names>И. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Cherepanov</surname><given-names>I. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Игорь Сергеевич Черепанов – кандидат химических наук, доцент,</p><p>Ижевск.</p></bio><bio xml:lang="en"><p>Igor' S. Cherepanov – Candidate of Sciences (Chemistry), Associate Professor,</p><p>Izhevsk.</p></bio><email xlink:type="simple">cherchem@mail.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>Новоселова</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Novoselova</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дарья Владимировна Новоселова – студент,</p><p>Ижевск.</p></bio><bio xml:lang="en"><p>Dar'ya V. Novoselova – Student in Chemistry,</p><p>Izhevsk.</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Удмуртский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Udmurt State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>03</day><month>11</month><year>2025</year></pub-date><volume>0</volume><issue>79</issue><fpage>99</fpage><lpage>109</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Черепанов И.С., Новоселова Д.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Черепанов И.С., Новоселова Д.В.</copyright-holder><copyright-holder xml:lang="en">Cherepanov I.S., Novoselova 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://journal.klgtu.ru/jour/article/view/181">https://journal.klgtu.ru/jour/article/view/181</self-uri><abstract><p>Применение пищевых добавок различной функциональности является в настоящее время одним из основных направлений развития кондитерской промышленности, при этом в ходе термообработки сырьевой массы вещества испытывают структурные превращения различного характера. Изучение подобных трансформаций позволяет направленно регулировать параметры технологических процессов, в связи с чем в настоящей работе представлены результаты исследований полиморфных превращений D-маннита (пищевая добавка Е421) при контролируемом термостатировании при температуре 180 °С во временном интервале до 3 ч методами УФ-электронной и ИК-колебательной спектроскопии. Анализ колебательных спектров показывает присутствие исходного коммерческого препарата D-маннита в форме наиболее термодинамически выгодной β-модификации, тогда как все термостатированные твердые фазы представлены α-модификациями. Последнее надежно подтверждается изучением ИК-спектральных профилей как среднечастотной (900–1800 см-1), так и высокочастотной (2800–3000 см-1) областей. При этом следует отметить отсутствие интенсивных полос в области 1650– 1800 см-1, что указывает на подавление процессов окислительной деструкции маннита. Исследование динамики изменения температур плавления твердых фаз и профилей электронных спектров ультрафиолетовой области их 1 %-ных растворов показывает экстремум (174 °С) и выраженный максимум при 260 нм для пробы, термостатированной в течение 1,5 ч. Можно предположить, что в данных экспериментальных условиях возможно параллельное с фазовыми переходами протекание химических процессов, вероятно, дегидратации и циклизации. Полученные результаты предполагается положить в основу разрабатываемой технологии термообработки полиолов для получения комбинированных пищевых добавок на их основе в условиях воздействия повышенных температур.  </p></abstract><trans-abstract xml:lang="en"><p>The use of food additives of various functionality is currently one of the main strategies of the confectionery industry, while during the heat treatment of the raw mass, substances undergo structural transformations of various nature. The study of such transformations allows for the targeted regulation of the parameters of technological processes, and therefore, this paper presents the results of studies of polymorphic transformations of D-mannitol (food additive E421) during thermostating at a temperature of 180 °C in a time interval of up to 3 hours using UV-electronic and IR-vibrational spectroscopy. Analysis of the vibrational spectra shows the presence of the initial commercial D-mannitol preparation in the form of the most thermodynamically favorable β-modification, whereas all the thermostatted solid phases are represented by α-modifications. The latter is reliably confirmed by the study of the IR spectral profiles of both the mid-frequency (900–1800 cm-1) and high-frequency (2800–3000 cm-1) regions. At the same time, the absence of intensive bands in the region of 1650–1800 cm1 should be noted, which indicates the suppression of the processes of oxidative destruction of mannitol. The study of the dynamics of changes in solid phases melting points and profiles of their electronic spectra in the ultraviolet region shows an extremum   (174 °C) and a pronounced maximum at 260 nm for a sample that was thermostatted for 1.5 hours. It can be assumed that under these experimental conditions, chemical processes may occur in parallel with phase transitions, possibly involving dehydration and cyclization. These results are expected to serve as the basis for the development of a thermo-processing technology for polyols to produce combined food additives based on them under the conditions of elevated temperatures.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>D-маннит</kwd><kwd>термические реакции</kwd><kwd>структура</kwd><kwd>полиморфные модификации</kwd><kwd>молекулярная спектроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>D-mannitol</kwd><kwd>thermal induced reaction</kwd><kwd>structure</kwd><kwd>polymorphic modifications</kwd><kwd>molecular spectroscopy</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">Bayon, R. Feasibility Study of D-mannitol as Phase Change Material for Thermal Storage / R. Bayon, E. Rojas. – DOI: 10.3934/energy.2017.3.404 // AIMS Energy. – 2017. – Vol. 5(3). – P. 404–424.</mixed-citation><mixed-citation xml:lang="en">Bayon, R. 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