为优化金花茶花中水溶性多糖微波提取工艺,在单因素试验的基础上,利用响应面分析法建立了金花茶花多糖(CCFP)微波提取的二次响应曲面方程.试验的三因素(温度、时间和液料比)对CCFP提取有不同的影响.结果表明,在试验范围内,通过方差分析...为优化金花茶花中水溶性多糖微波提取工艺,在单因素试验的基础上,利用响应面分析法建立了金花茶花多糖(CCFP)微波提取的二次响应曲面方程.试验的三因素(温度、时间和液料比)对CCFP提取有不同的影响.结果表明,在试验范围内,通过方差分析得出,微波提取温度对CCFP影响最大,其次为提取时间,液料比对CCFP提取率影响最小.试验因素的最佳条件为:提取温度77℃,时间10 min,液料比为26 m L∶1 g.在此条件下,CCFP提取率可达3.40%,与模型预测值3.56%很接近.展开更多
In this study, with Saccharomyces cerevisiae as the experimental material, microwave-assisted technology, phenol-sulfuric acid method and UV spectro- photometry were employed to investigate the extraction rate of poly...In this study, with Saccharomyces cerevisiae as the experimental material, microwave-assisted technology, phenol-sulfuric acid method and UV spectro- photometry were employed to investigate the extraction rate of polysaccharides. Solid-liquid ratio, microwave power and microwave processing time were adopted as single factors to optimize the extraction conditions. Subsequently, orthogonal experiment was performed to investigate the optimal extraction process of polysaccha- rides from S. cerevisiae. The optimal extraction conditions were： solid-liquid ratio 1 ： 20, microwave power 250 W, microwave processing time 3 min, under which the extraction rate of polysaccharides reached 4.98%. Compared with conventional hot water extraction method, microwave-assisted extraction technology exhibited shorter extraction time, higher efficiency, and could save more energy.展开更多
文摘为优化金花茶花中水溶性多糖微波提取工艺,在单因素试验的基础上,利用响应面分析法建立了金花茶花多糖(CCFP)微波提取的二次响应曲面方程.试验的三因素(温度、时间和液料比)对CCFP提取有不同的影响.结果表明,在试验范围内,通过方差分析得出,微波提取温度对CCFP影响最大,其次为提取时间,液料比对CCFP提取率影响最小.试验因素的最佳条件为:提取温度77℃,时间10 min,液料比为26 m L∶1 g.在此条件下,CCFP提取率可达3.40%,与模型预测值3.56%很接近.
基金Supported by Science and Technology Project of Shandong Province(2011GS2114)Science and Technology Project of Heze City(2010S002)
文摘In this study, with Saccharomyces cerevisiae as the experimental material, microwave-assisted technology, phenol-sulfuric acid method and UV spectro- photometry were employed to investigate the extraction rate of polysaccharides. Solid-liquid ratio, microwave power and microwave processing time were adopted as single factors to optimize the extraction conditions. Subsequently, orthogonal experiment was performed to investigate the optimal extraction process of polysaccha- rides from S. cerevisiae. The optimal extraction conditions were： solid-liquid ratio 1 ： 20, microwave power 250 W, microwave processing time 3 min, under which the extraction rate of polysaccharides reached 4.98%. Compared with conventional hot water extraction method, microwave-assisted extraction technology exhibited shorter extraction time, higher efficiency, and could save more energy.
