利用贝类废弃物制造水解动物蛋白

Producing of Hydrolyzed Animal Protein from Waste from Scallop Processing

以扇贝加工废弃物—扇贝边为原料 ,采用枯草杆菌蛋白酶、胰蛋白酶、Flavourzyme对其进行深度水解 ;然后应用超滤技术对酶解液进行分离 ,除去未水解的蛋白质、细菌、微细的颗粒等物质 ,得到富含氨基酸和小分子肽的超滤透过液 ;再应用反渗透技术进行预浓缩 ,以除去其中过多水分 ;最后 ,对该浓缩液进行减压浓缩或喷雾干燥 ,即得到浓液状或粉状的水解动物蛋白产品。其中 ,粉状产品的粗蛋白含量为 6 6 .88% ,氨基酸态氮含量为 6 .96 % ,氨基酸态氮 /总氮 6 5 .0 5 % 。

The waste from scallop processing-scallop skirt was deeply hydrolyzed with substilisin, trypsinase and Flavourzyme. The hydrolysate was separated by hollow fiber ultrafiltration so as to remove protein, bacteria and other macromolecule materials. The UF permeates contained various amino acids and low molecule weight polypeptides. Then the permeates was concentrated by reverse osmosis or dried using a spray drier. The content of crude protein and amino acid nitrogen in the hydrolysates was 66.88% and 6.96% respectively; the AAN/TN was 65.05%,which were all superior to the similar products imported .