鱼粉中鱼油浸提的工艺优化研究

以湿法生产的鱼粉为原料,研究了有机溶剂浸提法萃取鱼粉中鱼油的工艺技术参数。在单因素的基础上,根据Box-Benhnken的中心组合设计原理,通过响应面分析法对鱼粉中鱼油的浸提参数进行了优化。结果表明,以石油醚为浸提溶剂,在64℃下浸提3.5h下,鱼油得率可达19.4%±0.874%,接近模型预测值19.5%±0.028%,并可使鱼粉蛋白含量从55.9%±0.534%提高到68.0%±0.251%,达到国家特级鱼粉对蛋白的要求。 

Optimization of fish oil extraction from fishmeal using response surface analysis

Fishmeal which was produced by wet process that was used as the raw material. Organic solvent extraction for fish oil from fishmeal was optimized. Processing parameters of extraction including extract solvent, extract time and extract temperature were investigated on quality indicators (yield) of fish oil by single factor experiments. Optimum operating parameters were obtained by response surface methodology. Best conditions to produce fish oil were petroleum ether, extract time 3.5h and extract temperature 64℃ . The predicted results of yield of fish oil 19.5%±0.028% were close to the experimental values 19.4% ±0.874% , the content of protein in fishmeal had been improved from 55.9%±0.534% to 68.0%±0.251% , fulfill requirement of the national standard for super fishmeal.