响应面法优化超声波处理纳米SiO_x/蛋清蛋白复合膜液的制备  

Optimization by Response Surface Methodology of Ultrasound Treatment Conditions for Improved Properties of Nano-SiO_x/Albumin Complex Films

作　　者：郑优[1] 郭婷[1] 陈厚荣[1] 汪学荣[1] 

机构地区：[1]西南大学,重庆400716

出　　处：《食品科学》2013年第14期73-79,共7页Food Science

基　　金：中央高校基本科研业务费专项(XDJK2010C013)

摘　　要：目的:以蛋清蛋白为原料,制备纳米SiOx/蛋清蛋白复合膜,研究超声波处理复合膜液对膜性能的影响。方法:以超声功率、超声时间与间歇时间比、工作时间为试验因素,以拉伸强度、断裂伸长率、水蒸气透过系数及透油系数为响应值,采用单因素试验和响应面分析法,优化超声波处理复合膜液的制备条件。结果:建立了拉伸强度、断裂伸长率、水蒸气透过系数及透油系数的回归模型,优化的超声处理条件为超声功率205.67W、超声时间与间歇时间比1.13:1、工作时间23.32min,在此条件下复合膜各性能的预测值分别为5.141MPa、38.401%、2.719g.mm/(m2.d.kPa)、0.620g.mm/(m2.d),验证值为(5.092±0.146)MPa、(37.560±3.409)%、(2.961±0.083)g.mm/(m2.d.kPa)、(0.667±0.006)g.mm/(m.d),与之接近,优化结果可靠。结论:超声功率和工作时间是影响膜机械性能的主要因素,而超声时间与间歇时间比和工作时间是影响膜阻隔性能的主要因素。Objective： The optimum ultrasound treatment for improved properties of nano-SiOx/albumin complex films was established.Methods： Based on tensile strength（TS）,elongation at break,water vapor permeability（WVP） and oil permeability（PO）,ultrasound power and working/intermittence time were optimized by response surface methodology.Results： A regression model for each of the film properties was developed.The optimal ultrasound treatment conditions were 205.67 W,1.13：1 of working/intermittence time ratio and 23.32 min of working time.Under these conditions,the observed TS,elongation at break,WVP and PO of the complex film were（5.092 ± 0.146） MPa,（37.560 ± 3.409）%,（2.961 ± 0.083） g.mm/（m2.d.kPa） and（0.667 ± 0.006） g mm/（m2.d）,respectively,which were close to the predicted values of 5.141 MPa,38.401%,2.719 g.mm/（m2.d.kPa） and 0.620 g.mm/（m2.d）.Hence,the optimized treatment conditions were reliable.Conclusion： Ultrasound power and treatment time are the main factors that affect the mechanical properties of the film,while the main factors for the barrier properties are working/intermittence time ratio and working time.

关 键 词：蛋清蛋白膜 纳米SIOX 响应面 超声波 

分 类 号：TS206.4[轻工技术与工程—食品科学]