To analyze the monosaccharides composition and their molar ratio in Fuctus mume polysaccharide and Ligustrum japonica tea polysaccharide by using acetylation derivatization and capillary gas chromatography.The monosac...To analyze the monosaccharides composition and their molar ratio in Fuctus mume polysaccharide and Ligustrum japonica tea polysaccharide by using acetylation derivatization and capillary gas chromatography.The monosaccharides composition and their molar ratio of the Fuctus mume polysaccharide are: rhamnose:arabinose:xylose:mannose:glucose:galactose=0.65:4.96:0.93:1:7.03:8.61;the monosaccharides composition and their molar ratio of the Ligustrum japonica tea polysaccharide are: rhamnose:arabinose: xylose: mannose:glucose:galactose =1:3.31: 0.24:0.58:2.96:5.70.The method was established with the relative standard deviations and the recoveries being in the range of 0.37%～0.91% and 95.9 %～102.3 %,respectively.展开更多
Several factors affecting plasma oxidation of n-heptane in liquid phase have been investigated. The experimental results show that the temperature of n-heptane is the first major factor affecting formations of heptan...Several factors affecting plasma oxidation of n-heptane in liquid phase have been investigated. The experimental results show that the temperature of n-heptane is the first major factor affecting formations of heptanol and heptanone, and then oxygen flow and plasma power etc. follow in proper order. Under a typical condition the selectivity of product formation is far superior to that of plasma oxidation in the gas phase.展开更多
文摘To analyze the monosaccharides composition and their molar ratio in Fuctus mume polysaccharide and Ligustrum japonica tea polysaccharide by using acetylation derivatization and capillary gas chromatography.The monosaccharides composition and their molar ratio of the Fuctus mume polysaccharide are: rhamnose:arabinose:xylose:mannose:glucose:galactose=0.65:4.96:0.93:1:7.03:8.61;the monosaccharides composition and their molar ratio of the Ligustrum japonica tea polysaccharide are: rhamnose:arabinose: xylose: mannose:glucose:galactose =1:3.31: 0.24:0.58:2.96:5.70.The method was established with the relative standard deviations and the recoveries being in the range of 0.37%～0.91% and 95.9 %～102.3 %,respectively.
基金This work is supported by the National Nature Science Foundation of China! No. 29070183
文摘Several factors affecting plasma oxidation of n-heptane in liquid phase have been investigated. The experimental results show that the temperature of n-heptane is the first major factor affecting formations of heptanol and heptanone, and then oxygen flow and plasma power etc. follow in proper order. Under a typical condition the selectivity of product formation is far superior to that of plasma oxidation in the gas phase.
