Fresh blood of Tibetan sheep was subjected to protein separation and spray drying, and the effects of drying process on water content, yield and nitrogen soluble index of plasma powder from blood of Tibetan sheep were...Fresh blood of Tibetan sheep was subjected to protein separation and spray drying, and the effects of drying process on water content, yield and nitrogen soluble index of plasma powder from blood of Tibetan sheep were investigated. The results showed that the optimum separation parameters were a centrifugal speed at 6 000 r/min, centrifugal time of 20 min, a mass fraction of dry matter of 20%, an inlet air temperature at 180 ℃ and a feed rate at 400 ml/h, under which the plasma protein was a pale yellow powdery solid, indicating a good separation effect.展开更多
利用响应面法优化南瓜淮山复合固体饮料的喷雾干燥工艺参数,为其工业化生产提供理论依据。以南瓜、淮山为原料,采用喷雾干燥技术制备复合固体饮料,以出粉率为指标,在单因素试验的基础上采用Box-Behnken软件优化喷雾干燥工艺参数。喷雾...利用响应面法优化南瓜淮山复合固体饮料的喷雾干燥工艺参数,为其工业化生产提供理论依据。以南瓜、淮山为原料,采用喷雾干燥技术制备复合固体饮料,以出粉率为指标,在单因素试验的基础上采用Box-Behnken软件优化喷雾干燥工艺参数。喷雾干燥的最佳干燥工艺:乳清分离蛋白(whey protein isolate,WPI)添加量14.6%、进风温度168℃、可溶性固形物5.5%、物料流速9 mL/min,在此条件下出粉率可达52.1%。产品呈细腻均匀粉末,色泽淡黄无杂质,具有南瓜和淮山的香甜。展开更多
基金Supported by"123"Science and Technology Support Program from Science and Technology Department of Qinghai Province(2014-GX-136A)~~
文摘Fresh blood of Tibetan sheep was subjected to protein separation and spray drying, and the effects of drying process on water content, yield and nitrogen soluble index of plasma powder from blood of Tibetan sheep were investigated. The results showed that the optimum separation parameters were a centrifugal speed at 6 000 r/min, centrifugal time of 20 min, a mass fraction of dry matter of 20%, an inlet air temperature at 180 ℃ and a feed rate at 400 ml/h, under which the plasma protein was a pale yellow powdery solid, indicating a good separation effect.
文摘利用响应面法优化南瓜淮山复合固体饮料的喷雾干燥工艺参数,为其工业化生产提供理论依据。以南瓜、淮山为原料,采用喷雾干燥技术制备复合固体饮料,以出粉率为指标,在单因素试验的基础上采用Box-Behnken软件优化喷雾干燥工艺参数。喷雾干燥的最佳干燥工艺:乳清分离蛋白(whey protein isolate,WPI)添加量14.6%、进风温度168℃、可溶性固形物5.5%、物料流速9 mL/min,在此条件下出粉率可达52.1%。产品呈细腻均匀粉末,色泽淡黄无杂质,具有南瓜和淮山的香甜。
