Тип публикации: статья из журнала

Год издания: 2025

Идентификатор DOI: 10.14258/jcprm.20250417880

Ключевые слова: gum arabic, chemical modification, polycarboxylic acids, esterification, cross-linking, thermal properties, film formation

Аннотация: <jats:p>This work investigates the chemical modification of food-grade gum arabic (GA) using various polycarboxylic acids (citric, adipic, succinic, and oxalic) to enhance its functional properties for advanced applications. The esterification reaction was confirmed through a combination of elemental analysis and FTIR spectroscopy,Показать полностьюwhich indicated the successful incorporation of carboxyl and ester groups into the polysaccharide structure. X-ray diffraction analysis revealed a further amorphization of the modified samples, confirming structural changes. Gel permeation chromatography showed a significant increase in the average molecular weight (Mw) and polydispersity of the derivatives, indicating both cross-linking and chain extension reactions. Atomic force microscopy demonstrated the formation of homogeneous, defect-free films consisting of spherical particles agglomerated into a continuous matrix. Thermal analysis (TGA/DSC) revealed modified thermal degradation patterns and showed that the oxalate derivative (GA-OxA) exhibited the highest thermal stability with a residual mass of 80.73% at 500 °C and the maximum activation energy for decomposition (295 kJ/mol). The results demonstrate the successful synthesis of tailored gum arabic derivatives with improved thermal properties and altered solubility, making them promising materials for applications in food packaging, edible coatings, and as carriers for controlled delivery systems.</jats:p>

Журнал: Химия растительного сырья

Выпуск журнала: № 4

Номера страниц: 90-100

ISSN журнала: 10295151

Место издания: Барнаул

Издатель: Алтайский государственный университет, Сибирский государственный университет науки и технологий им. акад. М.Ф. Решетнева, Национальный исследовательский Томский политехнический университет, Красноярский научный центр СО РАН, Сибирский НИИ сельского хозяйства и торфа СО РАСХН, Сибирский федеральный университет, Национальный исследовательский Томский государственный университет

• Kazachenko Alexander Sergeevich (Prof. V.F. Voino-Yasenetsky Krasnoyarsk State Medical University)
• Gurova Kristina (Siberian Federal University)
• Malyar Yuri Nikolaevich (Siberian Federal University)
• Fetisova Olga Yurievna (Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences)
• Novikova Svetlana Andreevna (Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences)
• Karacharov Anton Aleksandrovich (Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences)

• Ядро РИНЦ (eLIBRARY.RU)