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Research Paper | December 1, 2013

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Effect of pH and calcium salt on rheological properties of sodium alginate -methyl cellulose mixtures

Fatemeh Mehmandoost, Mohammad Hojjatoleslamy, Javad keramat, Asma Behzadniya, Narges Shahbazpour

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Int. J. Biosci.3(12), 105-114, December 2013

DOI: http://dx.doi.org/10.12692/ijb/3.12.105-114


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In this study, rheological properties of two gums, sodium alginate (Alg) and methylcellulose (MC) in 5 concentration levels were studied. Total concentration of gums in solution was 0.1% (w/v) and different gums ratios (100% (Alg), 75% (Alg) and 25% MC, 50% (Alg) and 50% (MC), 25% (Alg) and 75% (MC), and 100% (MC)) were prepared. Measurements were carried out at 25˚C. Consequently the synergistic effect of these gums in different pH values (3, 5 and 7) in 0.1%(w/v) concentration was investigated. Obtained data indicated that dispersions which contain these polymers showed shear thickening behavior as mention in the text.


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