采用响应曲面法优化壳寡糖对杏果实减压渗透的处理条件

【目的】采用响应面法研究壳寡糖对杏果实减压渗透处理的最优条件。【方法】以新疆塞买提杏为实验材料,采用壳寡糖减压渗透的方式处理杏果实,浓度为0.5%、0.75%、0.25%,减压压强为0.03、0.05和0.07 MPa,减压时间为1、3和5 min。以杏果实硬度和发病率为响应值,研究壳寡糖对杏果实减压处理的最佳条件。【结果】在硬度和发病率的二次多项模型中,浓度和压强起着关键性的作用,在一次项和二次项中都表现差异显著。【结论】壳寡糖对杏果实减压渗透处理的最佳条件为浓度0.50%,压强0.05 MPa,作用时间为3

Optimization of Conditions for Vacuum Infiltration of Apricot Fruits by Respones Surface Method

Objective]The purpose of this study was to evaluate the effect of oligochitosan by vacuum infiltration of postharvest apricot fruits by response surface method with different concentrations,pressure and treatment times.Method]The Saimaiti apricot fruits(Prunusar meniaca L) were treated by vacuum infiltration of 0.25%,0.50%or 0.75%oligochitosan solution(molecular weight:5,000).The pressure of treatment were 0.03,0.05,0.07 MPa;The time of vacuum infiltration was lmin,3min,5min.The disease and firmness were exponent to determine the best combined condition.Result]The results indicated that oligochitosan solution and pressure were the key factors affecting disease and firmness,and had significant effect.Conclusion]The optimum vacuum infiltration was solution 0.5%,0.05 MPa and 3 min.