超声波辅助法优化马齿苋多糖的提取工艺

Optimization of Ultrasound-assisted Extraction of Polysaccharides from Portulaca oleracea L.

多糖是马齿苋的主要生物活性成分之一,具有重要的医疗保健作用,市场潜力大。为确定马齿苋多糖的最佳提取工艺,通过单因素试验与响应面法对其提取工艺进行优化。结果表明,马齿苋多糖的最佳提取条件为:提取功率120 W,提取时间53 min,提取温度61℃,料液比1∶39(g/m L),马齿苋多糖提取率为13.55%。

Polysaccharides is one of the main biological active substance in Portulaca oleracea L. and has important health protection function and big marketing potential. Polysaccharides extraction process from Portulace oleracea L. were optimized through single factor experiment and response surface methodology. The results indicated that the optimum extraction process of polysaccharides from Portulace oleracea L. were as following：extraction power 120 W,extraction time 53 min,extraction temperature 61 ℃,solid to liquid ratio 1 ∶ 39（g/m L）.Under the optimal conditions,the extraction rate of polysaccharides was up to 13.55 %.