Rheological Properties of Ca Salt of Xanthan in Aqueous Media(Biological Chemistry)
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概要
- 論文の詳細を見る
The non-Newtonian behavior and dynamic viscoelasticity of solutions of the Ca salt of xanthan were measured with a rheogoniometer. The Ca salt of xanthan showed pseudoplastic behavior<0.1% but was plastic>0.3%. Compared with native, Na, and K salts of xanthan, the Ca salt had higher dynamic viscoelasticity at high concentrations. The apparent viscosity of Ca salt of xanthan was very large at low temperatures and decreased with increasing temperature. These suggest very strong intermolecular association of the xanthan (Ca salt) molecules, probably due to the formation of ionic force between adjacent charged trisaccharide side-chains via Ca^<2+> on different molecules. Possible structures for quaternary association including intramolecular association of xanthan molecules (Ca and K salts) in aqueous solution were proposed.
- 社団法人日本農芸化学会の論文
- 1987-11-23
著者
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Tako Masakuni
Department Of Agricultural Chemistry College Of Agriculture University Of The Ryukyus
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NAKAMURA Sanehisa
Department of Agricultural Chemistry, College of Agriculture, University of the Ryukyus
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Nakamura Sanehisa
Department Of Agricultural Chemistry College Of Agriculture University Of The Ryukyus
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