Study on the Polar Extracts of Dendrobium nobile, D. officinale, D. loddigesii, and Flickingeria fimbriata: Metabolite Identification, Content Evaluation, and Bioactivity Assay.

ABSTRACT: The polar extract of the Dendrobium species or F. fimbriata (a substitute of Dendrobium), between the fat-soluble extract and polysaccharide has barely been researched. This report worked on the qualitative and quantitative studies of polar extracts from D. nobile, D. officinale, D. loddigesii, and F. fimbriata. Eight water-soluble metabolites containing a new diglucoside, flifimdioside A (1), and a rare imidazolium-type alkaloid, anosmine (4), were identified using chromatography as well as spectroscopic techniques. Their contents in the four herbs were high, approximately 0.9⁻3.7 mg/g based on the analysis of quantitative nuclear magnetic resonance (qNMR) spectroscopy. Biological activity evaluation showed that the polar extract of F. fimbriata or its pure component had good antioxidant

SUBMITTER: Chen H 

PROVIDER: S-EPMC6099805 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature