<研究論文>骨格筋における不凍水の特性

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Dielectric relaxation measurements by use of time domain reflectometry method were performed on Soleus Muscle and Gastrocnemius Muscle of wistar rat in temperature range of 0℃ to-30℃. Three relaxation peaks could be found below freezing point T_inof. The low frequency peak around 6kHz could be assigned to electrode polarization, and intermediate one around 20MHz could be attributed to migration of counterion on biomaterial. The high frequency one around 2GHz could be due to orientation of unfreezable water, which constructs an obscure shell layer around biopolymers such as myofibril and myoglobin. The amounts estimated as unfreezable water are 6.16×10_2(g/cc) for Gastrocnemius Muscle and 3.47×10_2(g/cc) for Soleus Muscle. On the other hand. the activation energies obtained as unfreezable water are 29kJ/mol for Gastrocnemius Muscle and 37kJ/mol for Soleus Muscle. These results suggest that the water structure in the red muscle differs slightly from that in the white one.
東海大学の論文