Quantitative Determination of Total Flavonoids in Blood-Red Hawthorn Leaves

Pharmaceutical Chemistry Journal - A quantitative determination method for total flavonoids in blood-red hawthorn leaves recalculated as vitexin 2″-O-rhamnoside using difference...     

Effect of phytopreparations containing phenylpropanoids on the physical activity of animals

The influence of phytopreparations containing phenylpropanoids on the physical activity and endurance was studied in white male mice (weighing 18–20 g) using the conventional forced swim test. It was established that the physical activity of animals was most increased under the action of the following preparations: common lilac (Syringa vulgaris) tincture, spiny eleuterococcus (Eleutherococcus senticosus) liquid extract, purple coneflower (Echinacea purpurea) tincture, sharp-leaved willow (Salix acutifolia) dry extract, and pink rhodiola (Rhodiola rosea L.) tincture. These preparations (except for Syringa vulgaris tincture) and aspen (Populus tremula) liquid extract also considerably increased the endurance of animals. The actoprotective properties of Saint Mary thistle (Silybum marianum) liquid extract (a hapatoprotective preparation) were not as manifested. __________ Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 40, No. 3, pp. 30–31, March, 2006.     

Comparative studies of the total flavonoids and anthracene derivatives contents of St. John's wort preparations

A comparative study of water-alcohol preparations of St. John's wort and imported medicinal formulations containing dry St. John's wort extract, Deprim, Negrustin, and Helarium Hypericum, was performed. The total flavonoids and athracene derivatives contents were significantly different in different medicinal formulations, though the ratios between them were essentially stable (at about 30:1), with the exception of St. John's wort infusion prepared using 40% ethanol. In the case of the preparation “St. John's Wort Infusion,” the greatest levels of biologically active compounds, particularly anthracene derivatives, were obtained by extraction with 70% ethanol. These studies provide evidence that Russian antidepressant medicinal formulations with chemical compositions similar to those of foreign St. John's wort preparations can be made. It is suggested that medicinal formulations based on St. John's wort be standardized in relation to the total flavonoids (in terms of rutin) and total anthracene derivatives (in terms of hypericin) contents. Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 42, No. 10, pp. 39–42, October, 2008.     

Quantitative Determination of Total Flavonoids in Blood-Red Hawthorn Fruit

Pharmaceutical Chemistry Journal - A quantitative determination method using direct spectrophotometry at 282 nm was developed for total flavonoids in blood-red hawthorn fruit (Crataegus sanguinea...