热风干燥应用于对虾加工废弃物制造水解蛋白粉的研究

Application of Hot Blast Drying in Production of Hydrolyzed Protein Powder from Wastes of Shrimp

摘要:

以南美白对虾加工废弃物（虾头、虾壳）为原料，通过酶水解蛋白粉后采用热风干燥工艺制备水解蛋白粉，重点研究了干燥温度、助干剂添加量（虾固形物与玉米淀粉比例）、物料厚度对水解蛋白粉品质的影响。结果表明，热风干燥的温度为90 ℃、虾固形物与玉米淀粉比例为1.5:1、物料厚度为0.6 cm时，所得到的水解蛋白粉品质最好，表现在水分含量低、色泽好、虾香味浓郁，其水份含量为2.75%、氨基酸态氮含量为3.61%。

Abstract:

Shrimp head and shell, the wastes of white shrimp, was used as raw material to produce hydrolyzed protein powder by hot blast drying after enzymatic treatment of proteinase. Emphases were laid on study of the effects of hot wind temperature, material thickness and the ratio of shrimp solid to corn starch on the quality of hydrolyzed protein powder. Results showed that hydrolyzed protein powder with best quality could be obtained under the following conditions: hot wind temperature of 90 ℃, the ratio of shrimp solid to cornstarch of 1.5:1, and material thickness of 0.6 cm. Under these content, the achieved product had low water content (2.75%), good color and strong shrimp flavor of the hydrolyzed protein powder, with amino acid nitrogen of 3.61% .