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Galactomannan‐Alginate Synergism Applied in Albumin Encapsulation
Author(s) -
Valenga Francine,
Lucyszyn Neoli,
Ono Lucy,
de Souza Clayton F.,
Lubambo Adriana F.,
Sierakowski Maria Rita
Publication year - 2011
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200900096
Subject(s) - galactomannan , rheology , sodium alginate , viscoelasticity , albumin , shear thinning , calcium , chemical engineering , materials science , chemistry , sodium , polysaccharide , chromatography , shear rate , nuclear chemistry , composite material , biochemistry , organic chemistry , engineering
In this work, the rheological properties of the partial replacement of sodium alginate (AL) by galactomannan extracted from the seeds of L. leucocephala (GML), with or without the presence of calcium ions, were evaluated. The viscoelastic behaviour of polysaccharide blends at 15 g·L −1 showed an increase in viscosity when AL was 50% (w/w) replaced by GML. The addition of calcium ions (45 mmol) increased the apparent viscosity of the blend more than 17 times, at a shear rate of 4 s −1 . Micrographs of [GML/AL/ALB] Ca 2+ crosslinked particles obtained by a spraying process were analysed by AFM and revealed spherical forms with diameters in the range of 518 nm, instead of 58.4 nm in the system without albumin. The results of ALB encapsulation (97% w/w) showed that the synergistic mixture GML/AL could be used, in the future, as a new carrier system.