Hibiscus rosasinensis Linn. is an evergreen woody, glabrous, showy shrub, distributed throughout India and called as Shoe flower plant or Chinese hibiscus. It is reputed for various properties in traditional medicine. To validate and support the claims by traditional medicine practitioners about the usefulness of its flowers for the treatment of diabetes the researchers at India investigated th...

The biologically active title compounds have been isolated from Hibiscus sabdariffa plants, hibiscus acid as a dimethyl sulfoxide monosolvate [systematic name: (2S,3R)-3-hy-droxy-5-oxo-2,3,4,5-tetra-hydro-furan-2,3-di-carb-oxy-lic acid dimethyl sulfoxide monosolvate], C6H6O7·C2H6OS, (I), and hibiscus acid dimethyl ester [systematic name: dimethyl (2S,3R)-3-hy-droxy-5-oxo-2,3,4,5-tetra-hydro-fur...

The aim of this study was to evaluate the phenolic and flavonoids contents and the antioxidant and antitumoral activity of leaf and calyx methanolic extracts from Hibiscus sabdariffa (roselle) cultivated with poultry litter and organosuper® under three modes of application. The total phenolic content in the each extract was determined using the Folin-Ciocalteu reagent and for aluminium chloride...

Three varieties of Hibiscus sabdariffa were analyzed for their phytochemical content and inhibitory potential on carbohydrate-digesting enzymes as a basis for selecting a variety for wine production. The dark red variety was chosen as it was highest in phenolic content and an aqueous extract partially inhibited α-glucosidase (maltase), with delphinidin 3-O-sambubioside, cyanidin 3-O-sambubiosid...

In the present study, Hibiscus rosasinensis polyphenol-rich extract (HPE) was isolated from the flowers and evaluated for its protective effect against hydrogen peroxide (H2O2) induced oxidation in normal human erythrocytes. RBCs pretreated with different concentrations of HPE extract showed the same hemolysis as that of control samples, demonstrating that the tested HPE extract did not have a ...

AIM To determine the androgenic effects of Basella alba and Hibiscus macranthus extracts in the rat and the bull, and to develop a novel in vitro test system using Leydig cells from bull testes. METHODS The effect of methanol extracts from both plants on testosterone production in isolated Leydig cells from the rat and the bull was analyzed using 125I-radioimmunoassay (125I-RIA). Rat Leydig c...

In vitro studies show Hibiscus sabdariffa L., an ingredient found in many herbal tea blends and other beverages, has antioxidant properties, and, in animal models, extracts of its calyces have demonstrated hypocholesterolemic and antihypertensive properties. Our objective in this study was to examine the antihypertensive effects of H. sabdariffa tisane (hibiscus tea) consumption in humans. A ra...

BACKGROUND AND OBJECTIVES Hibiscus sabdariffa L. (HS) and Gynostemma pentaphyllum Makino (GP) have been used as traditional medicines to treat diabetes and hypercholesterolemia. Nevertheless, there is interindividual variation in the metabolic responses to HS and GP consumption. This may be due to genetic factors. The aim of this study was to investigate the effects of HS and GP tea consumption...

The aim of the present study was to evaluate the antidepressant activity of the ethanolic extract of roots of Hibiscus rosa sinensis (HRS). The extract was tested on rats and mice at doses level of 250 and 500 mg/kg, Fluoxetine was used as a standard drug at dose of 15 mg/kg, by using forced swimming test, tail suspension test and open field test. HRS extract at dose level of 500 mg/kg caused h...