Correlation Analysis of the Content of Pharmacodynamic Components in Sarcandra glabra from Mingxi County and Its Relationship with Soil Physicochemical Properties.

In order to optimize the cultivation techniques of Sarcandra glabra and explore new medicinal parts to replace the traditional way of using the whole plant as medicine, the wild and cultivated Sarcandra glabra in different towns of Mingxi County, Fujian Province were selected. Through analyzing the content of its pharmacodynamic components, the differences in the content of pharmacodynamic components among various parts were compared, and the correlation between the pharmacodynamic components and the physicochemical properties of the soil was further explored.The results showed that the contents of isofraxidin and rosmarinic acid in the whole plant of Sarcandra glabra in different towns of Mingxi County far exceeded the standard limits specified in the 2020 edition of the Chinese Pharmacopoeia. In particular, the content of rosmarinic acid was more than 10 times the standard limit of the Pharmacopoeia. Among different townships, the content of isofraxidin in Sarcandra glabra from Fengxi Township（wild）is the highest, reaching 0.110%, while the content of rosmarinic acid in Sarcandra glabra from Fengxi Township（cultivated）is the highest, reaching 0.253%. Both are significantly higher than those in samples from other townships. For Sarcandra glabra, isofraxidin was mainly concentrated in the roots, and the content order was root＞stem＞leaf; rosmarinic acid was mainly concentrated in the stems, and the content order was stem＞root＞leaf. Through the correlation analysis between the content of pharmacodynamic components in Sarcandra glabra and the physicochemical properties of the soil, it was found that the content of isofraxidin was extremely significantly positively correlated with the soil organic matter content and significantly positively correlated with the soil potassium content; the content of rosmarinic acid was extremely significantly positively correlated with the soil organic matter content, and the contents of these two components were high in the soil rich in organic matter. In summary, this study is of great significance for guiding the planting and cultivation management of Sarcandra glabra. By adjusting the physical and chemical properties such as soil organic matter and potassium content, the content of medicinal components in Sarcandra glabra can be improved, and ideal towns suitable for its growth in Mingxi County can be screened. This provides data support for the selection of planting bases, optimization of subsequent cultivation techniques, and exploration of new medicinal parts, in order to promote the sustainable development of the industry.