Effect of Freeze Concentration of Various Salt Solutions on the Denaturation of Carp Myofibrils
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The apparent rate constants of freeze inactivation (KF) at different storage temperatures for various salts were calculated. Comparisons were then made among salts with relation to storage temperature and ionic strength of unfrozen salt solutions. For three kinds of sulfates with high eutectic points,hardly any change occured in relation to the storage temperature and ionic strength. The reason was thought to be the weaker action of sulfates to protein denaturation. The KF values of six kinds of salts (namely NH4Cl, NaNO3, Mg(NO3)3, BaCl2, CaCl2 and MgCl2 ) were highest in the temperature range of - 6~-14 °C. The extent of denaturation in the KF value differed for each salt,although,no relationship was found between maximum KF value and eutectic point. A possible explanation for the above results relates to the amount and ionic strength of unfrozen salt solution. The log KF increased with an increase in ionic strength,and reached a maximum at about 0.9 due to the effect of salt concentration. However,above an ionic strength of 0.9, the log KF decreased with an increase in ionic strength due to the decrease of unfrozen salt solution.
- 公益社団法人 日本冷凍空調学会の論文
公益社団法人 日本冷凍空調学会 | 論文
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