Investigation on Flos Trollii: constituents and bioactivities.

Flos Trollii, the flowers of Trollius chinensis Bunge, has been widely used in Chinese and Mongolian medicine for its efficacy of heat-clearing and detoxification. This drug has both medicinal and edible applications, and has led to various pharmacognosy, natural product chemistry, and pharmacology studies. As a result, its chemical constituents and bioactivities have been well-characterized in recent years.

[Evaluation of quality coherence of prepared slices of polygoni cuspidati rhizoma commercially available in China based on HPLC fingerprint].

Objective: To evaluate the quality coherence of the prepared slices of Polygoni Cuspidati Rhizoma commercially available in China and provide a reference for their quality evaluation.

Methods: The fingerprints were obtained using HPLC method, and analyzed with Chromatographic Fingerprint Similarity Evaluation System (2004A Version) provided by Chinese Pharmacopoeia Commission. The experiment was carried out with an Agilent TC-C18 column (250 mm x 4.

[Study on the chemical components of volatile oil from Euphorbia pekinensis radix].

Objective: To analyze the volatile oil from Radix Euphorbia Pekinensis.

Methods: Volatile oil was extracted from Radix Euphorbia Pekinensis by steam distillation and GC-MS was employed for detecting the content of the constituents. The relative content of the chemical constituents were calculated using area normalization method.

Distribution of Two bioactive compounds in flowers of Trollius chinensis.

A comprehensive procedure was established, which combined a high-performance liquid chromatography (HPLC) assay for the simultaneous quantification of 2″-O-β-L-galactopyranosylorientin (OGA) and veratric acid and a gravimetric analysis for the determination of the mass fraction of the floral parts (calyx, corolla, stalk, stamens and pistils and ovary) of Trollius chinensis, to investigate the distribution and identify the enriched floral part(s) of these two compounds in the flowers. The calculated mean distributions of OGA in calyx, corolla, stamens and pistils, stalk and ovary were 83.62, 7.