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.

Quality of Schisandrae Chinensis Fructus regionalization based on GIS technology / 中国中药杂志

This paper is aims to clarify the spatial distribution of high quality medicinal materials Schisandrae Chinensis Fructus. Based on investigation and field investigation, the samples and distribution information of Schisandrae Chinensis Fructus were collected. Based on the data of four kinds of lignin chemical constituents, ecological environment factors and spatial distribution data of Schisandrae Chinensis Fructus, using GIS technology, maximum information entropy model and SPSS statistical analysis method for regionalizing the quality of Schisandrae Chinensis Fructus. The results showed that Schisandrae Chinensis Fructus was mainly distributed in the northeast of Liaoning, east of Jilin, east of Heilongjiang. The content of schisandrin was higher in the samples from northeastern part of Jilin province and the northeastern part of Liaoning province, The content of deoxyschizandrin was higher in the samples from middle of Jilin province and northeastern Hebei province, where the content of schisandrin B was higher in the samples from Jilin area, The higher schisantherin A sample were from southeast of Jilin and northeast of Liaoning. Considering the content of four components in Schisandrae Chinensis Fructus, the quality of Schisandrae Chinensis Fructus was concentrated in the southeast of Jilin and the northeastern part of Liaoning.

Study on process optimization and judgment standard of quantitative of cooked Rhei Radix et Rhizoma / 中草药

Objective: To optimize the processing technology of cooked Rhei Radix et Rhizoma (RRR), and to quantify the judgment standard of concocting end point. Methods: The optimum technology of combination of single factor and orthogonal design was used to determine the optimum technology of aloe-emodin, rhein, emodin, chrysophanol, emodin, and total anthraquinone. The color value of processed products was quantified using the color difference measurement. Results: The steaming time had significant effect on the content of total anthraquinone in RRR, but the steaming time and steaming temperature had no statistical significance. The values of L (4 mm), a (4 mm, 8 mm), and b (4 mm) were significantly positive (negative) with chrysophanol, emodin, emodin, aloe-emodin, and total anthraquinone. The results showed that there was a significant positive correlation between rhein and b (8 mm) values, and the linear regression equation was Y = 0.288 + 0.007 X. Conclusion: The best processing technology of cooked RRR is: RRR and 30% yellow wine were moisten for 3.5 h, set at 100 ℃ steam for 1.5 h. Concocted the end point of cooked RRR processing scientifically determine that can be determined by the L, a, and b color values. And also for the in-depth study of traditional Chinese medicine concocted the end to determine the method laid the foundation.