半干咸鱼不同脱盐方式的研究

Study on the Different Desalting Methods of Half-Dried Grass Carp

分别研究了清水浸泡、添加脱盐剂、扎孔、振荡、真空反渗透等不同脱盐方式对半干咸鱼含盐量的影响,以鱼块含盐量及浸泡液的电导率、可溶性蛋白质含量、色差为监测指标,进行比较。结果表明,使鱼块含盐量降至质量分数3%的不同脱盐方式的脱盐时间:真空反渗透<振荡处理<扎孔处理<清水浸泡;添加质量分数1.5%海藻糖能最大限度地保持产品品质;综合脱盐速率和营养物质的损失,振荡处理是脱盐的有效手段之一;真空反渗透是一种快速脱盐的有效方式。

In this manuscript,the effects of the different desalting methods,such as clear water immersion,desalting agent,pricking,oscillation and vacuum reverse infiltration on the salt content of the half-dried grass carp were investigated,with the electrical conductivity,soluble protein content and chromatic aberration of soak liquid as parameters.The experiment results showed that the desalination times of 3% salt content in fish were vacuum reverse infiltration 〈 oscillation 〈 pricking 〈 clear water immersion.Adding 1.5% trehalose can maintain better product quality,the oscillation was an effective desalination treatment base on desalination rate and loss of nutrients,and vacuum reverse infiltration was an effective means of rapid desalting.