考虑第一类鱼抗冻蛋白HPLC-6钉扎效应的热滞研究  

Thermal Hysteresis Study of Considering the Winter Flounder Antifreeze Protein HPLC-6 Pinning Effect

作　　者：罗雄 刘俊杰[1] LUO Xiong;LIU Junjie(School of Physical Science and Technology,Inner Mongolia University,Hohhot 010021,China)

机构地区：[1]内蒙古大学物理科学与技术学院,呼和浩特010021

出　　处：《内蒙古大学学报（自然科学版）》2024年第5期496-501,共6页Journal of Inner Mongolia University：Natural Science Edition

基　　金：国家自然科学基金项目(62062053)。

摘　　要：根据抗冻蛋白HPLC-6分子在冰水界面区域的吸附模式和结构特点,通过将冰水界面区域的分子视为具有规则排列的硬圆柱体颗粒,研究了分子钉扎对冰面运动的阻碍作用,计算得到了分子对冰面的最大阻碍压力与浓度的关系。由于HPLC-6分子的阻碍作用,分子间的界面趋于突出形成弯曲的界面,从而导致HPLC-6溶液的凝固点温度降低。根据计算得到的分子对冰面的最大阻碍压力,结合弯曲界面处的平衡条件和Gibson-Thomsom关系,定量计算了HPLC-6溶液的热滞。结果表明理论预测的热滞值与实验数据符合较好。According to the adsorption mode and structural characteristics of the antifreeze protein HPLC-6 molecules at the ice-water interface region,the hindering effect of molecular pinning on the ice movement was investigated by considering the molecules at the ice-water interface region as hard cylindrical particles with regular arrangement,and the maximum hindering pressure of the molecules on the ice surface in relation to their concentration was obtained by calculation.Due to the hindering effect of the HPLC-6 molecules,the interfaces between the molecules tended to protrude to form curved interfaces,which led to a decrease in the freezing point temperature of the HPLC-6 solution.The heat hysteresis of the HPLC-6 solution was quantitatively calculated based on the calculated maximum hindering pressure of the molecules on the ice surface,combined with the equilibrium conditions at the curved interface and the Gibson-Thomsom relationship.The results show that the theoretically predicted thermal hysteresis values are in good agreement with the experimental data.

关 键 词：HPLC-6 热滞 钉扎 界面能 

分 类 号：Q61[生物学—生物物理学]