Kormpa, Akrivi (2017) Nanoglycogen, a new functional carbohydrate polymer. Master's Thesis / Essay, Chemical Engineering.
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Abstract
Highly-branched glucose polymers, derived from starch have shown interesting potential industrial applications in areas such as food, medicine, cosmetics and pharmaceuticals. Glycogen, like starch, is also a natural glucose polymer that shows more favorable features, since it is readily soluble in cold water and more accessible by enzyme. In the present study, glycogen was extracted from extremophilic red microalga Galdieria Sulphuraria. The material properties of this peculiar biopolymer were exploited with special emphasis in the rheology. Glycogen showed significantly decreased viscosity in solution compared to other highly-branched glucose polymers derived from starch and relative high surface activity, properties conferred by its shorter side chains and higher branch density. Consequently, the extracted glycogen was substituted with octenyl succinic anhydride through a 24h reaction. Phytoglycogen octenyl succinate (PGOS) and waxy potato starch octenyl succinate (POS) were also prepared as reference. 1H-NMR spectra were performed to facilitate the structure identification of the prepared polymers and for the determination of the degree of substitution.
| Item Type: | Thesis (Master's Thesis / Essay) |
|---|---|
| Supervisor name: | xx, xx |
| Degree programme: | Chemical Engineering |
| Thesis type: | Master's Thesis / Essay |
| Language: | English |
| Date Deposited: | 15 Feb 2018 08:30 |
| Last Modified: | 17 Mar 2022 11:05 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/15516 |
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