高蛋白脱脂核桃粉生产技术研究

主要对高蛋白脱脂核桃粉生产工艺流程中的去皮、脱脂、磨浆以及喷雾干燥这四个关键的生产步骤进行了研究,结果表明,用0.1%CaCl_2与0.5%NaOH的复合碱液63℃浸泡核桃仁5min,采用高压小流量清水枪喷淋并结合鼓泡式水流冲击与超声波振荡,三效联合冲洗去皮的方法,对核桃仁损伤程度较小,去皮效果最好,去皮率达97%:核桃仁经两级压榨,饼中残油≤16%;压榨后的核桃粕经两次磨浆,蛋白质的总溶出率为87.63%;控制喷雾干燥过程中进风和出风温度分别为200～230℃、85～90℃,制得的核桃粉水溶性可达95.2%.经本工艺可制备核桃味浓郁,蛋白质含量高于35%,脂肪含量小于26%的高蛋白脱脂核桃粉. ,结果表明,用0.1%CaCl_2与0.5%NaOH的复合碱液63℃浸泡核桃仁5min,采用高压小流量清水枪喷淋并结合鼓泡式水流冲击与超声波振荡,三效联合冲洗去皮的方法,对核桃仁损伤程度较小,去皮效果最好,去皮率达97%:核桃仁经两级压榨,饼中残油≤16%;压榨后的核桃粕经两次磨浆,蛋白质的总溶出率为87.63%;控制喷雾干燥过程中进风和出风温度分别为200～230℃、85～90℃,制得的核桃粉水溶性可达95 2%.经本工艺可制备核桃味浓郁,蛋

Study on the processing technology of high protein defatted walnut powder

Four key processes of the technology of high protein low fat walnut powder were studied in this paper. The results showed that the walnut kernel were dipped with the 0.1% CaCI2 and 0.5% NaOH compound liquid at 63℃; for 5rain,and then flushed by three-way joint flushing peeled method which were high-pressure spray guns with a small flow of water, bubbling water impact and ultrasonic vibration.Under this processing,the decorticating rate of walnut kernel was about 97% .The residual walnut oil in the cake was less than 16% after twice grinded crushing.Then the walnut dregs were grinded twice, the total protein dissolution rate was 87.63% .The inlet and outlet temperature of the spray drying were 200～230℃and 85～90℃.The solubility of obtained walnut powder was up to 95.2%.High protein defatted walnut powder with rich walnut flavor,more than 35% protein and less than 26% fat,can be obtained by this technology.