采用L9(34)正交实验对黄蘑多糖(Polysaccharide of Huangmo,简称HMP)的提取条件进行了优化,对黄蘑多糖除蛋白的方法及条件进行了实验研究。实验结果确定热水提取多糖的最佳条件为:料液比1∶20,提取温度90℃,提取时间3h,多糖产率达21.32%...采用L9(34)正交实验对黄蘑多糖(Polysaccharide of Huangmo,简称HMP)的提取条件进行了优化,对黄蘑多糖除蛋白的方法及条件进行了实验研究。实验结果确定热水提取多糖的最佳条件为:料液比1∶20,提取温度90℃,提取时间3h,多糖产率达21.32%;使用三氯乙酸法去除多糖的蛋白,当m(黄蘑粗多糖)∶m(三氯乙酸)=1∶6时,多糖质量分数达到83.7%。展开更多
The powder of xwt%SiO2-WO3 was prepared by chemical precipitation.The microstructure was characterized through XRD and TEM.The effects of SiO2 content and sensors operating temperature on the sensitivity were investig...The powder of xwt%SiO2-WO3 was prepared by chemical precipitation.The microstructure was characterized through XRD and TEM.The effects of SiO2 content and sensors operating temperature on the sensitivity were investigated.The results show that the sensitivity to H2S rises when SiO2 added.The sensor has high sensitivity and good selectivity to H2S when x=5 and the optimum working temperature is 180℃.展开更多
文摘采用L9(34)正交实验对黄蘑多糖(Polysaccharide of Huangmo,简称HMP)的提取条件进行了优化,对黄蘑多糖除蛋白的方法及条件进行了实验研究。实验结果确定热水提取多糖的最佳条件为:料液比1∶20,提取温度90℃,提取时间3h,多糖产率达21.32%;使用三氯乙酸法去除多糖的蛋白,当m(黄蘑粗多糖)∶m(三氯乙酸)=1∶6时,多糖质量分数达到83.7%。
文摘The powder of xwt%SiO2-WO3 was prepared by chemical precipitation.The microstructure was characterized through XRD and TEM.The effects of SiO2 content and sensors operating temperature on the sensitivity were investigated.The results show that the sensitivity to H2S rises when SiO2 added.The sensor has high sensitivity and good selectivity to H2S when x=5 and the optimum working temperature is 180℃.
