We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Eco-Friendly Depolymerization of Alginates by H 2 O 2 and High-Frequency Ultrasonication.
- Authors
Song, Yun Ha; Woo, Hee Chul; Lee, Jaekyoung
- Abstract
Marine biomass has attracted attention as an environmentally sustainable energy source that can replace petroleum-based resources. Alginates, the main natural polysaccharides extracted from seaweeds, are used in various fields, such as food, pharmaceuticals, and chemical raw materials. Because the versatile applications of alginates depend on their physicochemical properties, which are controlled by their molecular weights, proper alginate depolymerization should be established. Previous approaches have limitations such as long reaction times and environmental issues. In this study, we report eco-friendly alginate depolymerization using hydrogen peroxide (H2O2)-induced oxidative decomposition and high-frequency ultrasonication. In oxidative decomposition, the depolymerization tendency depends on both the temperature and the use of iron oxide catalysts that can promote the Fenton reaction. Ultrasonication is effective in promoting selective depolymerization and ring-opening reactions. Oligo-alginates obtained through the precise molecular weight regulation of alginate offer potential applications in medical devices and platform chemicals.
- Subjects
DEPOLYMERIZATION; SONICATION; RENEWABLE energy sources; MARINE biomass; RING-opening reactions; HYDROGEN peroxide
- Publication
Clean Technologies, 2023, Vol 5, Issue 4, p1402
- ISSN
2571-8797
- Publication type
Article
- DOI
10.3390/cleantechnol5040069