Rheological behavior of gel of xanthan with seed galactomannan: Effect of hydroalcoholic–ascorbic acid |
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| Authors: | Heidegrid Siebert Koop Carlos Eduardo de Oliveira Praes Fany Reicher Carmen Lúcia de Oliveira Petkowicz Joana Léa Meira Silveira |
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| Affiliation: | 1. Universidade Federal do Paraná, Departamento de Bioquímica e Biologia Molecular, P.B. 19046, CEP 81531-990, Curitiba-PR, Brazil;2. ''O Boticário'', Av. Rui Barbosa, 3450, CEP 83055-900, São José dos Pinhais-PR, Brazil |
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| Abstract: | The rheological properties of a physically linked hydroalcoholic gel obtained from a binary system consisting of xanthan and of galactomannan from the seeds of Mimosa scabrella (X:GB) with a low Man:Gal ratio of 1.1:1 were compared to those of guar gum (Man:Gal ratio 1.5:1, X:GG). The rheological analysis demonstrated an improvement of strength of X:GB and X:GG hydrogels after dispersion of the polysaccharides in buffer with 1,2-propanediol. The addition of ascorbic acid to these hydrogel formulations resulted in a slight decrease of gel strength. Both hydrogels presented rheological stability over 12 weeks at ambient temperature. |
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