响应曲面法优化超声波提取沙葱籽多糖工艺

目的：以野生沙葱种子经超临界二氧化碳萃取脱脂后的滤渣为材料，利用响应面法优化超声波提取沙葱籽多糖工艺。方法：在单因素试验的基础上，以水料比、提取温度、提取时间为影响因素，应用Box-Behnken中心组合方法进行三因素三水平试验，以多糖得率为响应值，进行响应面分析。结果：沙葱籽多糖提取的最佳工艺条件为水料比48.0:1(mL/g)、提取温度73.1℃、提取时间1.6h、超声波功率300W、提取次数2 次，沙葱籽多糖得率预测值为7.59%，验证值为7.47%，与预测值的相对误差为1.58%。结论：超声波法提取沙葱籽多糖能大大缩短提取时间，且方法简便、准确、高效。

Process Optimization for the Ultrasonic-assisted Extraction of Allium mongolicum Regel Seed Polysaccharides Using Response Surface Methodology

Objective:The ultrasonic-assisted extraction process for polysaccharides from the residue of Allium mongolicum Regel seeds after the oil of extraction with supercritical carbon dioxide was optimized using response surface methodology.Methods:On the basis of single factor experiments,a three-factor,three-level Box-Behnken central composite design(CCD) was utilized for mathematical modeling for polysaccharide yield as a response to extraction temperature and time as well as material/water ratio,followed by re...