罗非鱼鱼鳞盐酸脱灰的工艺参数优化

The Process Parameters Optimization on Deliming of Tilapia Scales with HCl

用盐酸法对罗非鱼鱼鳞脱灰工艺进行研究。考察盐酸浓度、料液比、搅拌速度、浸酸时间、温度等因素对脱灰率的影响。在常温(20℃)下,盐酸浓度0.5mol/L、料液比(体积分数)1∶15、搅拌速度100r/min、浸酸时间1.5h时,灰分含量为1.94%。脱灰率达到94.77%,灰分含量<2%,达到企业对灰分含量的要求。

The deliming of tilapia scales was studied by hydrochloric acid method. The influence of ash removal rate such as HCl concentration,solid- liquid ratio,stirring speed,acid leaching time,temperature and other factors was studied. The concentration of hydrochloric acid 0. 5mol/L,ratio of solid to liquid 1∶ 15,stirring speed 100 r/min,extracting time 1. 5h,under constant temperature,ash removal rate is the highest,ash content of 1. 94%. Ash removal rate reached 94. 77%,the ash content 2%,in accordance with the requirements of enterprises for the raw materials.