脉冲电场对粉末磷脂分散体系颗粒性质的影响  

Effect of Pulsed Electric Field on Particle Distribution Properties of Powder Phosphatides Dispersion System

作　　者：贾晓[1] 曾新安[1] 

机构地区：[1]华南理工大学轻工与食品学院,广东广州510641

出　　处：《食品科学》2012年第5期42-45,共4页Food Science

基　　金：国家自然科学基金项目(21076088);广东省科技计划国际合作重点项目(2009B050400003)

摘　　要：研究高强脉冲电场(PEF)对磷脂水溶液分散体系颗粒性质的影响。结果表明:增大脉冲电场场强和脉冲数的输入,体系粒径分布区间明显变窄且向较小方向移动;在场强为70kV/cm条件下,平均粒径(dM)由未施加电脉处理下的594.4nm减为203nm,相比未施加电场样品减少了65.8%;低场强(20kV/cm)处理下,50个脉冲处理下dM为511.2nm,而在高场强(60kV/cm)条件下,25个脉冲处理时,dM为349.7nm,说明在高场强处理下,能够在较少的脉冲数输入下,获得较小的颗粒粒径。The effect of pulsed electric field （PEF） treatment on particle properties of powder phosphatides dispersion system was studied. The results showed that the size distribution of powder phosphatides was significantly narrowed and shifted towards smaller size direction with the increase of electric field strength and number of applied pulses, The average particle size was reduced by 65.8% from 594.4 nm （contrast） to 203 nm at a filed intensity of 70 kV/cm. It was demonstrated that the particle size was decreased to 511.2 nm under lower filed intensity （20 kV/cm） with 50 pulses, and to 349.7 nm under higher filed intensity （60 kV/cm） with 25 pulses, Therefore, small particles can be easily obtained after PEF treatment with higher filed intensity and less pulse number,

关 键 词：脉冲电场 粉末磷脂 分散体系 颗粒性质 

分 类 号：TS201.6[轻工技术与工程—食品科学]