柿饼保质期响应模型的研究

A Model-based Study of Formulation of Compound Preservatives for Prolonging the Shelf Life of Dried Persimmon

研究尼泊金乙酯(Z1)、尼泊金丙酯(Z2)、纳他霉素(Z3)防腐剂延长柿饼保质期的效果,利用响应面法得到了关于柿饼保质期的回归方程:lny=5.312+1776.5Z1+300.8Z2+217.7Z3-2244800Z1Z2。失拟检验表明该方程的准确率达99%以上。通过响应曲面和单因素线性分析得到:Z2<0.079g/100mL时,Z1、Z2与回归方程有正相关性;Z2>0.079g/100mL时,Z1、Z2与回归方程有负相关性。

Nipagin A,propyl 4-hydroxybenzoate and natamycin were formulated and used to prolong the shelf life of dried persimmon.Based on orthogonal array design,the following regression model describing the shelf life of dried persimmon（y） as a function of the final concentrations of nipagin A（Z1）,propyl 4-hydroxybenzoate（Z2） and natamycin（Z3） in aqueous solution：lny = 5.312 ＋ 1776.5 Z1 ＋ 300.8 Z2 ＋ 217.7 Z3-2244800 Z1 Z2.The lack-of-fit tests demonstrated that the accuracy of the model was more than 99%.According to response surface and single-factor linear analyses,when Z2 was less than 0.079 g/100 mL,Z1 and Z2 had positive correlation with y;when Z2 was more than 0.079 g/100 mL,Z1 and Z2 had negative correlation with y.