基于响应面法优化牡丹切花涂膜保鲜剂配方的研究

为延长牡丹（Paeonia suffruticosa）切花的保鲜时间，在对海藻酸钠、柠檬酸和壳聚糖单因素试验的基础上，进行Box-Behnken中心组合试验设计，并通过响应面回归分析优化牡丹切花涂膜保鲜剂配方。结果表明牡丹切花涂膜保鲜剂的最佳配方为：海藻酸钠16.9 g ? L-1，柠檬酸3.1 g ? L-1，壳聚糖15.3 g ? L-1。在此条件下，牡丹切花常温贮藏一周后的总色差值（?E）为2.11，失水率为2.01%，与对照组相比切花的观赏品质显著提高。

Optimization of Film Coating Antistaling Agent Formula of Cut Tree Peony Flowers Based on Response Surface Methodology

To extend the preserving time of the cut tree peony flowers（Paeonia suffruticosa），Box-Behnken center-united experiment was designed concerning three factors（sodium alginate，citric acid and chitosan）on the basis of single-factor test. Then the response surface regression analysis was conducted to obtain the optimium ingredients of cut tree peony flowers coating antistaling agent. Results showed that the optimum proportion for the ingredients were sodium alginate 16.9 g ? L-1，citric acid 3.1 g ? L-1 and chitosan 15.3 g ? L-1. Under these conditions the fresh cut tree peonies were stored at room temperature for a week. Then the total color value（?E）was 2.11，and the water loss rate was 2.01%. Therefore，the ornamental quality of the flowers in the experimental group has been significantly improved compared with that of the control group.