Buscar recursos académicos

Conocida la calidad nutricional de las hojas de Amaranthus cruentus y habiéndose detectado alta actividad hemolítica, se buscaron las sapogeninas presentes. La técnica de separación usada fue la de Peñafiel y Díaz ...

Ilex pseudobuxus Reissek es una de las especies que ha sido mencionada como adulterante de la yerba mate (Ilex paraguariensis St. Hil.). El análisis de la fracción glucosídica de las hojas mostró la presencia predomi...

Current quality control patterns are limited to industrial application, for most the natural chemical reference substances are expensive and unavailable. Here in, quantitative analysis of multi-components with single mar...

Sapindus saponaria L., Sapindaceae es una planta arbórea de amplia distribución en el territorio brasileño; sus frutos son usados popularmente para combatir úlceras e inflamaciones de la piel. El presente trabajo tuv...

The saponified petroleum ether extract (SPE) of the Annona reticulata L. bark were studied for fatty acid composition by GC-MS analysis. Six fatty acids amounting 86.68% of the total contents were identified. The compo...

Rhizoma Paridis saponins (RPS) were considered to be the principal bioactive components of Paris polyphylla Smith var. yunnanensis. Intestinal microflora-mediated metabolism may affect their pharmacological activities in...

An ultra-performance liquid chromatography/time-of-flight mass spectrometry (UPLC/QTOF/MS) method was established to analyze the saponins in Rhizoma Paridis saponins (RPS) and the constituents in urinary and feces sample...

Oral administration to rats of Rhizoma Paridis saponins (RPS) from Paris polyphylla var. yunnanensis extracts have been found to show strong anti-tumor activity, but the effective constituents were not known. To detail...

Ilex argentina es una de las especies que ha sido mencionada como adulterante o sustituto de la yerba mate verdadera (l. paraguariensis). De las hojas fueron aisladas dos saponinas y un triterteno y sus estructuras quím...

Fourteen compounds were isolated from the rhizome of Trillium tschonoskii Maxim. By spectroscopic analysis, these compounds were established as Gracillin (1), Paris saponins V (2), Paris saponins VI (3), Paris saponins H...

Bulbs of Fritillaria ussuriensis Maxim., usually known as Bulbus Fritillariae ussuriensis, (BFU) has been used as antitussive, antiasthmatic and expectorant in traditional herbal medicine. In this study, the aqueous extr...

Manilkara subsericea (Mart.) Dubard (Sapotaceae) is popularly known in Brazil as "guracica". The species from the genus Manilkara have been studied and several substances were found, including triterpenes. In the present...

The methanol extract of the whole plant of Eclipta prostrata and one of its isolated compounds, eclalbasaponin II were administered to alloxan-induced diabetic rats for 28 and 7 consecutive days, respectively. During the...

Ten compounds were isolated from the rhizomes of Paris axialis H. Li (PA). Based on spectral data, the isolated compounds were identified as Diosgenin (1), Paris saponin V (2), Paris saponin VI (3), Paris saponin I 4), P...

Twelve compounds were isolated from the rhizoma of Paris polyphylla Smith var. pubescens Handel-Mazzetti. Based on spectral data, the isolated compounds were identified as stigmasterol (1), β- Ecdysterone (2), Diosgenin...

Ilex theezans Martius ex Reiss. es una de las especies que ha sido mencionada como adulterante de la yerba mate verdadera (Ilexparaguariensis St. Hil.). Dos saponinas y un triterpeno de las hojas fueron aislados y sus es...

Room-temperature ultraviolet lasing in semiconductor nanowire arrays has been demonstrated. The self-organized, oriented zinc oxide nanowires grown on sapphire substrates were synthesized with a simple vapor transport a...