Publications by authors named "Zhi-jian Fang"
Article Synopsis
- The study focuses on analyzing the chemical components of the plant Rubus alceaefolius.
- Nine compounds were successfully isolated and purified using techniques like column chromatography and identified through spectral analysis.
- Notably, compounds 4-8 were isolated from this plant for the first time, with compounds 4-8 also being discovered in the Rubus genus for the first time.
Objective: To investigate the chemical constituents from the roots of Rubus parvifolius.
Methods: The chemical constituents were isolated by silica gel column chromatography, Sephadex LH-20, as well as preparative high performance liquid chromatography. Their structures were identified on the basis of physicochemical properties and NMR analysis.
Article Synopsis
- The study aimed to create a high-performance liquid chromatography (HPLC) method for analyzing three compounds—emodin, chrysophanol, and physcion—from various parts of Berchemia lineata.
- Researchers used a specific HPLC setup with a Diamonsil ODS C18 column, methanol-phosphoric acid as the mobile phase, and detected compounds at a UV wavelength of 254 nm.
- Results showed that the method achieved a high recovery rate and revealed that the root part of Berchemia lineata contained more total anthraquinones than the stem, indicating the method's effectiveness for quality control.
Objective: To develop a HPLC method for determination of chlorogenic acid in Solanum torvum and provide a scientific basis for evaluating the quality and reasonable utilization of the herb.
Methods: HPLC was used to quantitatively determine the chlorogenic acid content in Solanum torvum from different origin, different harvest time and different part. The assay was performed on a Agela Promosil C18 (4.
Fallopia multiflora (Thunb.) Harald, a traditional Chinese medicinal plant, is used in treating dizziness. In this study, the samples of F.
View Article and Find Full Text PDFUltra-performance liquid chromatography (UPLC), as a development of the chromatographic technique, was used in the quality control of Panax ginseng C.A. Mey.
View Article and Find Full Text PDFObjective: To establish a sensitive and specific method for quality control of Folium Fici Microcarpa, HPLC method was applied for studies on the fingerprint chromatogram of Folium Fici Microcarpa.
Methods: Isovitexin was used as reference substance to evaluate the chromatogram of 10 samples from different regions and 12 samples collected in different months.
Results: The result revealed that all the chromatographic peaks were seperated efficiently.
[Study on determination and principal component analysis of inorganic elements in Polygonum multiflorum from different areas].
Zhongguo Zhong Yao Za Zhi
February 2008
Article Synopsis
- The study aimed to investigate the inorganic elements in the plant Polygonum multiflorum by measuring various elements using ICP-AEC.
- Wild specimens of P. multiflorum were found to have significantly higher levels of certain elements (Al, Ca, K, Mg, Sr, Ti) compared to cultivated ones, while other elements showed no significant differences.
- Principal component analysis (PCA) revealed that Al, B, Ba, Fe, Na, Ni, Ti, Ca, and Sr are characteristic elements of P. multiflorum, with a notable variation in element distribution from samples taken in Tianyang.