Modification of Arabinogalactan Isolated from Larix sibirica Ledeb. into Sulfated Derivatives with the Controlled Molecular Weights : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.3390/molecules26175364

Ключевые слова: arabinogalactan, larix sibirica ledeb, sulfated arabinogalactan, molecular weight distribution, gel permeation chromatography, optimization, sulfation

Аннотация: The process of sulfation of arabinogalactan-a natural polysaccharide from Larix sibirica Ledeb.-with sulfamic acid in 1,4-dioxane using different activators has been studied for the first time. The dynamics of the molecular weight of sulfated arabinogalactan upon variation in the temperature and time of sulfation of arabinogalactanПоказать полностьюwith sulfamic acid in 1,4-dioxane has been investigated. It has been found that, as the sulfation time increases from 10 to 90 min, the molecular weights of the reaction products grow due to the introduction of sulfate groups without significant destruction of the initial polymer and sulfation products. Sulfation at 95 degrees C for 20 min yields the products with a higher molecular weight than in the case of sulfation at 85 degrees C, which is related to an increase in the sulfation rate; however, during the further process occurring under these conditions, sulfation is accompanied by the destruction and the molecular weight of the sulfated polymer decreases. The numerical optimization of arabinogalactan sulfation process has been performed. It has been shown that the optimal parameters for obtaining a product with a high sulfur content are a sulfamic acid amount of 20 mmol per 1 g of arabinogalactan, a process temperature of 85 degrees C, and a process time of 2.5 h.

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Издание

Журнал: MOLECULES

Выпуск журнала: Vol. 26, Is. 17

Номера страниц: 5364

ISSN журнала: 14203049

Место издания: BASEL

Издатель: MDPI

Персоны

  • Malyar Yuriy N. (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Pr Svobodny 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Chem & Chem Technol, Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
  • Vasilyeva Natalia Yu (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Pr Svobodny 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Chem & Chem Technol, Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
  • Kazachenko Aleksandr S. (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Pr Svobodny 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Chem & Chem Technol, Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
  • Borovkova Valentina S. (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Pr Svobodny 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Chem & Chem Technol, Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
  • Skripnikov Andrei M. (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Pr Svobodny 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Chem & Chem Technol, Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
  • Miroshnikova Angelina (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Pr Svobodny 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Chem & Chem Technol, Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
  • Zimonin Dmitriy (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Pr Svobodny 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Chem & Chem Technol, Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
  • Ionin Vladislav A. (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Pr Svobodny 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Chem & Chem Technol, Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
  • Kazachenko Anna S. (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Pr Svobodny 79, Krasnoyarsk 660041, Russia)
  • Issaoui Noureddine (Univ Monastir, Fac Sci, Lab Quantum & Stat Phys LR18ES18, Monastir 5079, Tunisia)