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Amphiphilic Spruce Galactoglucomannan Derivatives Based on Naturally-Occurring Fatty Acids.
- Source :
-
BioResources . Aug2013, Vol. 8 Issue 3, p3771-3790. 20p. 1 Illustration. - Publication Year :
- 2013
-
Abstract
- A class of nonionic polysaccharides-based surfactants were synthesised from O-acetyl galactoglucomannan (GGM), water-soluble hemicelluloses from spruce, using naturally-occurring saturated fatty acids, CH3(CH2)nCOOH (n = 7, 12, and 16). Hemicelluloses can be recovered from waste-streams of papermaking and agricultural processes or isolated by hot water extraction of plant tissues integrated into a biorefinery process. Fatty acids can be recovered as byproducts of the agricultural and food industries. Different synthesis routes were applied to yield amphiphilic derivatives with either a grafted or block structure. Fatty acids activated with 1,1'-carbonyldiimidazole (CDI) were grafted to the backbone of GGM molecules on their hydroxyl groups. Alternatively, synthesised amino-activated fatty acids using ethylenediamine were reacted with the reducing end of GGM. By adjusting the reagent ratios, GGM-based surfactants with different hydrophilic to hydrophobic ratios were prepared. Their surface activity was assessed by measuring the surface tension in water. This study presents an approach to design carbohydrate-based surfactants using naturally-occurring fatty acids that may find potential applications in such areas as food, cosmetic, and paint formulations. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 19302126
- Volume :
- 8
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- BioResources
- Publication Type :
- Academic Journal
- Accession number :
- 89393505
- Full Text :
- https://doi.org/10.15376/biores.8.3.3771-3790