以南极磷虾为原料,研究其酶解及喷雾干燥工艺,以及南极磷虾蛋白粉的营养成分指标。研究结果表明,采用木瓜蛋白酶酶解南极磷虾的最佳工艺参数:每100 g南极磷虾肉糜中木瓜蛋白酶酶用量3 000 U/g蛋白、料液比为1:2(g:mL)、温度55 ℃、pH 6.5、时间2 h;南极磷虾酶解液最佳喷雾干燥条件:进料量250 g/L、进风温度180 ℃、进料温度30 ℃、进料速度12 mL/min;南极磷虾蛋白粉为白色粉状,吸湿性较强。南极磷虾蛋白粉脂肪含量较低且具有丰富的矿物元素,关于南极磷虾及其高附加值产品的研究具有很强的开发前景。
The Antarctic krill was used as a raw material to study its enzymolysis and spray drying process, as well as the nutritional composition indexes of its protein powder. The results showed that the optimal processing parameters to digest Antarctic krill using papain were as follows: papain enzyme (3 000 U/g protein) per 100 g Antarctic krill, the ratio of solid to liquid was 1:2, at 55 ℃ and pH=6.5 for 2 h. The optimal spray drying condition to process Antarctic Krill enzymatic hydrolysate was 25% hydrolysate , 180 ℃ inlet air, feeding at 30 ℃ and 12 mL/min. Antarctic krill protein powder was white and had strong hygroscopicity. Antarctic krill protein powder was low in fat and rich in minerals. Researches on Antarctic krill and its high value-added products have promising development prospects.
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