摘要
用孔径为 10 0nm、5 0nm、10nm、5nm的无机陶瓷膜超滤大豆蛋白提取液 ,浓缩其中的大豆蛋白。试验表明 10nm的膜管对大豆蛋白的截留率达 98.35 % ,膜通量在适当的操作条件下 ,可以达到 110L/(m2 ·h)。同时研究发现 ,pH为 9 0的大豆蛋白提取液和pH为 8.0、10 .0的提取液相比 ,超滤的膜通量更大。膜通量随着超滤温度和压力的升高而升高。经超滤浓缩、喷雾干燥得到了大豆分离蛋白 ,其蛋白质含量为 92 .6 2 %。
The soybean protein extracts were ultrafiltrated by the inorganic ceramic membrane tubes whose apertures were 100,50,10,5 millimicrons to concentrate the soybean protein.It shows that when the 10 millimicrons membrane tube is used,the retention ratio to soybean protein is 98.35% and the flux of membrane is near 100 L/(m^2·h) under the proper operation conditions.In addition,the flux of membrane is the highest,when the pH value 9.0 soybean protein extracts is ultrafiltrated,compared with the pH value 8.0,10.0 ones.The flux of membrane is increased with the ultrafiltration temperature and pressure increasing.The protein content of the soybean protein isolate,which is prepared by inorganic membrane ultafiltration and spay drying,is 92.62%.
出处
《中国油脂》
CAS
CSCD
北大核心
2003年第12期19-22,共4页
China Oils and Fats
