比旋光度

但当ph升至7时，溶液的比旋光度就大大下降。

However , when the pH is raised to7 , there is a large decrease in the specific rotation of the solution .

结果表明，经硅胶吸附法处理的维生素E产品的比旋光度可以达到美国FCC的标准。

The results showed that the specific rotation of vitamin E obtained through the silica gel adsorption process can meet the requirements of FCC .

经SephadexG-100、DEAE-SephadexA-25、HPLC和比旋光度法验证，AMP分子量及极性均一。

By means of Sephadex G-100 , DEAE-Sephadex A-25 , HPLC and specific optical rotation measurement , it was proved to be homogeneous on molecular weight and polar as well .

用光散射法测定其重均分子量为1.42×10~5g/mol，比旋光度为+90°，总糖含量96.5%，显色反应表明ASP是还原性多糖，热分析测试为无定型粉末。

The molecule weight of ASP is 1.42 × 10 ~ 5g / mol , the specific rotatory power is + 90 °, and the total content of ASP is 96.5 % . The thermal analysis shows that ASP is a amorphism powder .

（1S，3R）-樟脑酸酐由（1R，3S）-樟脑酸制得并经过元素分析、红外光谱、比旋光度和X-射线单晶衍射表征。

( 1S , 3R ) - Camphoric anhydride has been synthesized via ( 1R , 3S ) - camphoric acid and characterized by IR , EA , optical rotation and X-ray single crystal diffraction techniques .

在手性醇合成中，采用非手性柱气相色谱（CC）分析，结合反应前后诱导物和产物的比旋光度测定，简单方便地计算了比旋光增量；

N order to calculate the increment of specific rotation conveniently , we present an analytical method forthe synthesis of chiral alcohols , in which the GC assay combined with the determination of specific rotation both for inductor and product before and after the reaction is performed .

将氨基葡萄糖硫酸盐产物的晶体重新溶解于20℃水中时，它的比旋光度随时间的延长而下降，1.5h后趋于稳定，从92.1°降低至56.7°。

While redissolved in water at 20 ℃, the specific rotation of glucosamine sulfate decreased with the time from 92.1 ° to about 56.7 ° and was , however , stable after 1.5 h at 56.7 ° .

结果表明，经过两级超滤，获得10K以上、4～10K和4K以下3个级分，各级分的质量百分比分别为55.9%、16.7%和18.5%；各级分的比旋光度和含硫量依次减少；

The weight percentage of the above fractions in the mixed components was 55.9 % , 16.7 % and 18.5 % respectively . The intrinsic viscosity and the sulfur content of the fractions decreased according to the order of above 10K , between 4K and 10K , and below 4K .

用测定比旋光度的物理学方法来分析D-葡萄糖的变旋光现象

Analyzing Mutarotation of D-glucose by Physics Ways Determining Specific Rotation

GB/T613-1988化学试剂比旋光度测定通用方法

Chemical reagent & General method for the determination of specific optical rotation

基于定量结构-性质关系方法预测氨基酸的比旋光度

Prediction of the Power Rotation of the Amino Acid Based on the Quantitative Structure-Property Relationship Method

果葡糖浆的成分因分子结构有不对称碳原子而具有旋光特性，可用旋光度、比旋光度表示[1]，通过旋光仪测定具体数据，进而分析果糖的含量。

The components of fructose syrup have the characteristics of optical rotation due to the asymmetric carbon atoms in their molecular structures and can be expressed by optical rotation and specific optical rotation . The content of fructose is analyzed on the basis of the data detected with a polarimeter .