The multiple nutrition properties of some exotic fruits: Biological activity and active metabolites

Anti-hyperglycemic effect of the polysaccharides fraction from American ginseng berry extract in ob/ob mice.

Is the hype around the reproductive health claims of maca (Lepidium meyenii Walp.) justified

Dioscorea nipponica Makino is a perennial twining herbs belonging to the family Dioscoreaceae, which is mainly distributed in the northeastern, northern, eastern and central regions of China. Traditionally, the rhizome of this herb has been commonly used by Miao and Meng ethnic groups of China to treat rheumatoid arthritis, pain in the legs and lumbar area, Kashin Beck disease, bruises, sprains, chronic bronchitis, cough and asthma. Modern pharmacological studies have discovered that this herb possesses anti-tumor, anti-inflammatory, anti-diuretic, analgesic, anti-tussive, panting-calming and phlegm-dispelling activities, along with enhancing immune function and improving cardiovascular health. In recent years, both fat-soluble and water-soluble steroidal saponins were isolated from the rhizomes of D. nipponica using silica gel column chromatography, thin layer chromatography and high performance liquid chromatography methods. Saponin and sapogenins are mainly responsible for most of the pharmacological effects of this plant. Further, the chemical components of the aboveground parts contain more than 10 kinds of phenanthrene derivatives. The present review summarizes the knowledge concerning the geographical distribution, chemical composition, pharmacological effects, toxicology studies and clinical applications of D. nipponica.

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Dioscorea nipponica Makino: a systematic review on its ethnobotany, phytochemical and pharmacological profiles

Chemical constituents of Swertia mussotii and their anti-hepatitis B virus activity.

Chemical constituents from aerial parts of Dioscorea nipponica

A herminium's triolhistisaponine is prepared from herminium herb through extracting its total saponin, and purifying by macroreticular adsorption resin. It can be used for preparing the medicines to treat diabetes B.

Herminium's triochistisaponine extract and its extraction refining method and its medical use

Studies on the chemical constituents in the fruit of Panax quinquefolius

[Objective] This research was to establish a method for the determination of alpha-mangostin in Garcinia mangostana L. [Method] Reverse phase high-performance liquid chromatography(RP-HPLC) method with an ultra-violet detector(UVD) was performed on a 5 μm DiamonsilTM C18 column(250.0 mm×4.6 mm) at 25 ℃, the mobile phase composition was methanol-water(83∶17), the flow rate was at 1.0 ml/min, the detection wavelength was 317 nm. [Result] The method fulfilled all the standard requirements of precision, accuracy and linearity(r0.999). The recovery was 98.9%, RSD was 1.87%. Alpha-mangostin contents of three batches samples of G. mangostana were 36.4, 37.3, 38.5 mg/g respectively, the average content was 37.4 mg/g. [Conclusion] RP-HPLC-UVD method is simple, accurate, high sensitivity, good reproducibility, and can be used for the determination of alpha-mangostin in G. mangostana.

Determination of alpha-mangostin in pericarpium Garciniae mangostanae by RP-HPLC-UVD.

To further separate 85% ethanol extract of Pericarpium Garciniae Mangostanae,5 xanthones were isolated by chromatography and identified as isonormangostin(Ⅰ),garcinone E(Ⅱ),7-O-methylgarcinone E(Ⅲ),1,6-dihydroxy-7-methoxy-8-(3-hydroxy-3-methylbutyl)-6′,6′-dimethyl-4′,5′-dihydropyrano[2′,3′:3,2]xanthone(Ⅳ),3-isomangostin(Ⅴ). Compounds Ⅱ and Ⅳ were isolated from the plant for the first time.

LI Ping-ya

Papers

Chemical constituents from aerial parts of Dioscorea nipponica

Herminium's triochistisaponine extract and its extraction refining method and its medical use

Studies on the chemical constituents in the fruit of Panax quinquefolius

Determination of alpha-mangostin in pericarpium Garciniae mangostanae by RP-HPLC-UVD.

Isolation and identification of several xanthones from the pericarp of Garcinia mangostana.