書誌事項
- タイトル別名
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- 2. Estimation of Molecular Mobility of Glassy Sugar Materials(the 48th Annual Meeting)
- ガラス状態下にある糖類の分子運動性の評価
- ガラス ジョウタイ カ ニ アル トウルイ ノ ブンシ ウンドウセイ ノ ヒョウカ
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説明
To obtain the basically knowledge of the molecular mobility of low molecular carbohydrate under the glassy state, the enthalpy relaxation time (τ) of five sugars such as glucose, galactose, maltose, sucrose and trehalose, were examined through aging experiment by using DSC. The glassy samples were aged at several temperatures of (T_g-10) K to (T_g-35) K. The r at each temperature was obtained by fitting Kohlrausch-Williams-Watts (KWW) equation to the time course of enthalpy relaxation amount (ΔH). When the temperature dependence of molecular mobility was assumed as Arrhenius process, the activation energy amount (ΔE) could be estimated. Judging from the ΔE value, it can be considered that the enthalpy relaxation is mainly due to α-relaxation process governing the molecular dynamics. Furthermore, the ΔE was larger in order of trehalose>galactose>sucrose>maltose>glucose. The result would support the explanation of availability of glassy trehalose as lyoprotectant of protein or biosystem under the severe circumstance.
収録刊行物
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- 低温生物工学会誌
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低温生物工学会誌 48 (2), 71-74, 2002
低温生物工学会
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詳細情報 詳細情報について
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- CRID
- 1390282680064492672
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- NII論文ID
- 110002950826
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- NII書誌ID
- AN10448734
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- ISSN
- 24241555
- 13407902
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- NDL書誌ID
- 6540450
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
