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- Title
Chemical modification of gum arabic and its application in the encapsulation of C ymbopogon citratus essential oil.
- Authors
Ribeiro, Francisco Wanderson Moreira; Laurentino, Larissa da Silva; Alves, Carlucio Roberto; Bastos, Maria do Socorro Rocha; Costa, José Maria Correia da; Canuto, Kirley Matos; Furtado, Roselayne Ferro
- Abstract
ABSTRACT Sodium trimetaphosphate (STMP) is an effective crosslinking agent of starch and can be used in other polysaccharides for promoting changes in their physical and chemical characteristics. In this study, gum arabic was modified with different STMP concentrations and evaluated as the changes in the physical and physicochemical characteristics. Further, modified gum arabic was evaluated by encapsulation efficiency (EE) of Cymbopogon citratus essential oil. A lower viscosity was observed with the increase of the STMP concentration. Higher concentrations of STMP decreased the water amount retained in the modified gum arabic. The increasing of the crosslinking degree causes a decrease in particle size. The EE of modified gum arabic with 6% STMP was 97%, whereas for the unmodified gum arabic was 85%. The high efficiency encapsulation of the essential oil is a positive result of physicochemical changes in the gum arabic crosslinking. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41519.
- Subjects
CROSSLINKING (Polymerization); GUM arabic; ESSENTIAL oils; ENCAPSULATION (Catalysis); LEMONGRASS oil; BIOPOLYMERS
- Publication
Journal of Applied Polymer Science, 2015, Vol 132, Issue 8, pn/a
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.41519