%0 Journal Article
%T A DIFFERENTIAL SCANNING CALORIMETRIC STUDY OF HEATS OF FUSION OF WATER ABSORBED IN COLLAGEN FIBRE<br>胶原纤维内吸附水熔融热的差示扫描量热法的研究
%A 张极震
%A 章正廉
%J 生物物理学报
%D 1985
%I 
%X The heats of fusion of water associated with bovine achilles tendon collagen (BAT)were measured as a function of hydratjon in the range of 0.15 to 4.30 g( wate-r)/g(protein) before and after denaturation using DSC. At the water content, R, of 0.33 g/g the melting peak of ice was observed. Below 0.57 g/g the measured integral heats of fusion, Qf, are fitted to a nonlinear function of hydralion, from which the threshold water content of 0426 g/g is obtained. In 0.57 to 1.05 g/g Qf lie close to a linear relation of R and the apparent differential heat of fusion dQ/dR = 69.5 cal/g (water). At above 1.05 g/g dQ/dR = 79.2 cal/g. It is concluded that both the heat of fusion of freezable water and the amount of non-freezable water are the function of water content.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=E0C9D9BBED813D6674AC13E942EAC86D&aid=6E7D2C0F4E2CCA7428ECBF84CE901DC9&yid=74E41645C164CD61&vid=CA4FD0336C81A37A&iid=0B39A22176CE99FB&sid=8BD23BD67BF01A5C&eid=09ABD5535D9B6D45&journal_id=1000-6737&journal_name=生物物理学报&referenced_num=1&reference_num=0