Differential scanning calorimetry and temperature dependence of electric conductivity in studies on denaturation process of bone collagen
Differential scanning calorimetry and temperature dependence of electric conductivity in studies on denaturation process of bone collagen
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DOI：
10.1016/j.jnoncrysol.2005.05.041
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发表时间：
2005-09-15
影响因子：
3.5
通讯作者：
Mielcarek, S
中科院分区：
文献类型：
--
作者：
Kubisz, L;Mielcarek, S
用电导率法和差示扫描量热法研究了温度诱导骨胶原的结构转变。在400-455 K范围内，胶原变性和结构转变的过程表现为热图上的吸热峰和电导率的增加。两种方法测定的变性温度分别为429 K和436 K。实验是在295 ~ 520 K温度范围内加热的牛骨干上进行的。为了去除骨样品吸收的游离水，在测量前将骨样品在380 K下预热。(c) 2005 Elsevier B.V.版权所有
Temperature induced structural transformation of bone collagen has been studied by electric conductivity measurements and differential scanning calorimetry. The process of collagen denaturation and structural transformation was manifested as an endothermic peak on the thermogram and as an increase in the electric conductivity, within the range of 400-455 K. The temperatures of denaturation assessed by both methods were 429 K and 436 K respectively. The experiments were carried out on dry bovine bone heated in the temperature range of 295-520 K. In order to remove free water absorbed by bone samples, they were pre-heated at 380 K prior to the measurements. (c) 2005 Elsevier B.V. All rights reserved.