Study on GLI values of Polygonatum odoratum base on multi-temporal of unmanned aerial vehicle remote sensing / 中国中药杂志

Unmanned aerial vehicle(UAV) remote sensing and vegetation index have great potential in the field of Chinese herbal medicine planting. In this study, the visible light image of Polygonatum odoratum planting area in Changyi district of Jilin province were acquired by UAV, and the real-time monitoring of P. odoratum planting area was realized. The green leaf index(GLI) was established, and GLI values of P. odoratum were collected used the spatial sampling points. To compare the GLI values in different periods, it was found that the GLI values of P. odoratum have three stages changing rule of rising-gentle-falling related to the germination, vigorous growth and withered of P. odoratum growth. Meanwhile, the GLI values were compared with four biomass data of P. odoratum, including plant height, leaf area, chlorophyll a and chlorophyll b content in leaves, and it was found that the GLI value was related to the growth potential of P. odoratum. The GLI value with a rapid increase in rising stage or at a high level in the gentle stage means the P. odoratum was in a better growth potential. GLI value has a same change trend with plant height, and has certain correlation with plant height and leaf area. However, there is no obvious relationship between chlorophyll a and chlorophyll b contents in leaves and GLI value. The study clarified the change rule of GLI value of P. odoratum, explained the reason for the change of GLI value, and expanded the application range of GLI. The research shows that UAV and vegetation index can be applied to monitoring the Chinese herbal medicines planting, and provides a new idea for exploring more effective information extraction methods of Chinese herbal medicines.

Investigation and analysis of influence of geographical environment factors on spatial distribution of flavonoid of Epimedium koreanum / 中国中药杂志

The study is aimed to clarify the spatial distribution of Epimedium koreanum( Ek) high-quality production areas. Through visiting and field investigation,collecting the distribution information of Ek samples,and based on the four kinds of flavonoids in Ek,the high-quality production areas and distribution of Ek distribution of the main environmental factors were drawn using GIS technology,the maximum entropy model( MaxEnt),geographical detector statistical analysis method,and the statistical significance of regression equation were obtained. Considering the content of 4 main flavonoids in Ek,the results of this study showed that the main environmental factors,such as precipitation,annual precipitation variation coefficient,annual average temperature and clay content exhibited the greatest influence on the growth suitability of Ek. Ek materials quality concentrated distribution in southeastern Jilin province Changbai mountain hinterland and northeastern Liaoning province. Ek with high content of epimedine A and epimedine C are mainly distributed in the southeastern Jilin province and northeastern Liaoning province,Ek with high epimedine B is distributed in eastern Liaoning province; high icariin Ek was found in most area of northeastern Liaoning province,a small amount distributed in the southeast of Jilin province. This study predicted the climate suitability distribution of Ek,and provided reference for the rational planning and establishment of the standardized cultivation base of Ek.

Regionalization study of Dioscorea nipponica in Jilin province based on MaxEnt and ArcGIS / 中国中药杂志

At the urgent practical issue of resource protection and artificial cultivation area selection of Dioscorea nipponica, the dominant environmental factors affecting the distribution of D. nipponicain Jilin province were selected by field investigation and using the maximum information entropy model and geographic information technology. MaxEnt model study found that the standard deviation of seasonal variation of temperature, precipitation in October and other six environmental factors on the growth of D. nipponica are the greatest impacting factors. The range of suitability for the growth of D. nipponica was 4.612 08×10-6-0.544 31, and the regionalization study was divided into four parts: high fitness area, middle fitness area, low fitness area and unfavorable area. The high fitness area is concentrated in the central and southern areas of Jilin Province, using ArcGIS statistical environment factors in the appropriate area of the numerical situation. The results showed that the regionalization study of D. nipponica was basically the same as the actual situation. It is clear that the natural environment suitable for the growth of D. nipponica is also the basis for the protection of the resources and the selection of cultivated area.

Determination of cholesteryl palmitate in Oviductus Ranae by HPLC / 中国中药杂志

<p><b>OBJECTIVE</b>To develop a new method for the determination of cholesteryl palmitate in Oviductus Ranae.</p><p><b>METHOD</b>A HPLC method was set up, using Zorbax Silica column and cyclohexane-diethyl ether (40:1) as mobile phase with a flow rate of 1.0 mL x min(-1), and the UV detection wavelength was 203 nm.</p><p><b>RESULT</b>The calibration curve was linear over the range of 0.60-8.92 microg (r = 0.9997), the average recovery of the method was 98.4%. RSD 1.8% (n = 6).</p><p><b>CONCLUSION</b>The results showed that method was reliable and accurate.</p>

Study on the origin of Rana temporaria for quality Oviduetus Ranae / 中国中药杂志

<p><b>OBJECTIVE</b>To determine the origin of Rana temporaria for quality Oviduetus Ranae in the light of historical documents and modern researches on the classification of Rana temporaria chensinensis.</p><p><b>METHOD</b>Works of Chinese meteria medica of all ages, related historical documents and reports from home and abroad on researches of R. temporaria chensinensis were consulted, sorted out, analyzed and summarized.</p><p><b>RESULT</b>The original Shange recorded in the works of Chinese meteria medica is R. temporaria chensinensis, which is the independent species, not one of species of European forest frogs. R. temporaria chensinensis is divided into 4 subspecies: R. temporaria chensinensis, Lanzhou, Kangding, and Changbaishan. The origin of R. temporaria is Changbaishan subspecies of R. temporaria chensinensis.</p><p><b>CONCLUSION</b>Changbaishan subspecies of R. temporaria chensinensis is determined as the origin for quality Oviduetus Ranae.</p>

The studies on the chemical components of trutleback / 中国中药杂志

<p><b>OBJECTIVE</b>Studies on the substance with nourishment Yin for a reasonable and rational auality appraise for turtleback.</p><p><b>METHOD</b>To separate by chromatography and identifying with MS, 1H NMR, 13C NMR, IR.</p><p><b>RESULT</b>Two compounds were separated and identified as hexadecanoyl cholesterol ester and cholesterol.</p><p><b>CONCLUSION</b>The two compounds are isolated from turtleback for the first time.</p>