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Trehalose solution viscosity at low temperatures measured by dynamic light scattering method : Trehalose depresses molecular transportation for ice crystal growth

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タイトル: Trehalose solution viscosity at low temperatures measured by dynamic light scattering method : Trehalose depresses molecular transportation for ice crystal growth
著者: Uchida, Tsutomu 著作を一覧する
Nagayama, Masafumi 著作を一覧する
Gohara, Kazutoshi 著作を一覧する
キーワード: Biomaterials
Fluid flows
Organic compounds
Sucrose
発行日: 2009年12月 1日
出版者: Elsevier B.V.
誌名: Journal of Crystal Growth
巻: 311
号: 23-24
開始ページ: 4747
終了ページ: 4752
出版社 DOI: 10.1016/j.jcrysgro.2009.09.023
抄録: The inhibitory effects of trehalose on ice crystal growth were discussed on the basis of the viscosity measurements of aqueous solutions via the dynamic light-scattering method. The temperature and concentration conditions of the solution were ranged between 268 and 343K and up to 50wt%, respectively, which were feasible for applying this novel technique and were useful in the indirect measurement of the macroscopic dynamic properties of the trehalose solutions. A comparison of the viscosity data with those reported in the literatures indicated the validity of this method for measuring the viscosity. The nonlinearity of the temperature and concentration dependences of the trehalose solutions suggested that two different hydrogen-bonding networks exist in the solutions within the investigated range. Dilute solutions of less than 10wt% of trehalose exhibited properties very similar to those of pure water. Higher concentration solutions had large viscosities with large temperature and concentration dependences. This was caused by the decrease in the free water in the solution and the development of hydrogen-bonding networks with hydrated trehalose clusters. Sucrose and maltose solutions had the same properties, so this would be the dominant inhibitory process of disaccharides on ice crystal growth.
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/40228
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 内田 努

 

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