Effect of Galactomannan on the Dynamic Properties of Xyloglucan Aqueous Solution

Wancheng Sittikijyothin

doi:10.4028/www.scientific.net/AMR.506.266

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 506Effect of Galactomannan on the Dynamic Properties...

Effect of Galactomannan on the Dynamic Properties of Xyloglucan Aqueous Solution

Abstract:

Xyloglucan and Galactomannan as biopolymers were extracted from mature seeds of Tamarindus indica L. and Cassia fistula, respectively. They are natural hydrocolloid which widely applied as thickening, stabilizing, gelling agents in many industries due to its specific functional properties when dissolving in water. In this study, the effect of galactomannan addition on dynamic properties of xyloglucan aqueous solution was investigated at 20°C by using a Haake Rheometer RS75. The low concentration of xyloglucan solution (3.13wt%) was interested and fixed while the concentrations of galactomannan aqueous solutions were varied from 0.5 to 2.78wt%. The results showed that both pure hydrocolloids and their mixed solutions presented the typical shape for macromolecular solutions: loss modulus (G´´) > storage modulus (G´) at studied frequencies. The magnitudes of both moduli (G´, G´´) of the mixed system were enhanced when higher galactomannan solution (2.78wt%) adding, resulting the higher viscous of galactomannan solution than that xyloglucan solution.

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Periodical:

Advanced Materials Research (Volume 506)

Pages:

266-269

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.506.266

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Online since:

April 2012

Authors:

Wancheng Sittikijyothin

Keywords:

Galactomannan, Intrinsic Viscosity, Mechanical Spectra, Xyloglucan

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