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Dissolution and regeneration of starch in hydroxyl-functionalized ionic liquid aqueous solution.
Tan, Xiaoyan; Huang, Yitao; Muhammad, Umair; Song, Chao; Zhang, Sai; Xia, Xueshan; Feng, Yue; Guo, Ling; Wang, Guowei; He, Zhendan; Xie, Fengwei.
Afiliación
  • Tan X; College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, China; College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China.
  • Huang Y; College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China; State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
  • Muhammad U; College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, China.
  • Song C; Anning First People's Hospital Affiliated to Kunming University of Science and Technology, Kunming 650302, China.
  • Zhang S; Shenzhen YHLO Biotech Co., Ltd., Shenzhen 518116, China.
  • Xia X; Anning First People's Hospital Affiliated to Kunming University of Science and Technology, Kunming 650302, China.
  • Feng Y; Anning First People's Hospital Affiliated to Kunming University of Science and Technology, Kunming 650302, China.
  • Guo L; Anning First People's Hospital Affiliated to Kunming University of Science and Technology, Kunming 650302, China.
  • Wang G; College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China. Electronic address: kingwell2004@sina.com.
  • He Z; College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, China. Electronic address: hezhendan@sztu.edu.cn.
  • Xie F; Department of Chemical Engineering, University of Bath, Bath BA2 7AY, United Kingdom.
Int J Biol Macromol ; 264(Pt 2): 130775, 2024 Apr.
Article en En | MEDLINE | ID: mdl-38467210
ABSTRACT
There have been continuous quests for suitable solvents for starch, given the importance of effective starch dissolution in its modification and subsequent materials production. In light of this, the potential of hydroxyl-functionalized ionic liquid (IL) as a promising solvent for starch was investigated. Within this study, a hydroxyl-functionalized IL 1-(2,3-dihydroxypropyl)-3-methylimidazole chloride ([Dhpmim][Cl]) was synthesized, and the dissolution of starch in this IL and its aqueous solutions was examined. Starch (5.35 wt%) was completely dissolved in [Dhpmim][Cl] within 2 h at 100 °C. The solubility of starch in [Dhpmim][Cl]-water mixtures initially increased and then decreased with rising water content. The optimal ratio was found to be 19 (wt/wt) water[Dhpmim][Cl], achieving the highest solubility at 9.28 wt%. Density functional theory (DFT) simulations elucidated the possible interactions between starch and solvents. After dissolution and regeneration in the 19 water[Dhpmim][Cl] mixture, starch showed no discernible change in the molecular structure, with no derivatization reaction observed. Regenerated starch exhibited a transformation in crystalline structure from A-type to V-type, and its relative crystallinity (12.4 %) was lower than that of native starch (25.2 %), resulting in decreased thermal stability. This study suggests that the hydroxyl-functionalized IL, [Dhpmim][Cl], and its aqueous solutions serve as effective solvents for starch dissolution.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Líquidos Iónicos Idioma: En Revista: Int J Biol Macromol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Líquidos Iónicos Idioma: En Revista: Int J Biol Macromol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos