1996 Volume 62 Issue 4 Pages 603-605
The dielectric properties of carp myofibrils in the presence and absence of electrolytes under frozen conditions were measured. Unfrozen water was characterized by the apparent dielectric relaxation time (τ) and apparent activation energy calculated. The unfrozen water was divided into three groups that had different relaxation mechanisms by a Cole-Cole plot. The temperature-dependence (reciprocal of absolute temperature) of τ (Arrhenius plot) presented a biphasic pattern with a breaking point at -15.3 and -23.2°C in the absence and presence of electrolytes, respectively. In the temperature range from the breaking point to the lowest temperature examined, it seems that the unfrozen water is “unfreezable water” andcorresponds to monolayer water. At the same time, it is considered that unfrozenwater in the temperature range from the breaking point to the highest temperature examined corresponds to the bound water of multilayer water. The mobility of unfrozen and unfreezable waters increased in the presence of electrolytes under the temperatures examined.
