From the hexane extract of the bark of the stems of Senna racemosa (syn. Cassia racemosa) a new dihydroanthracenone derivative, named racemochrysone, was isolated. Its structure was established as 8,9-dihydroxy-3-methoxy-2,2,6-trimethyl-(2H)-anthracen-1-one based on spectroscopical data, mainly 1D and 2D NMR experiments. In addition beta-sitosterol, stigmasterol, chrysophanol and physcion were ...

Abstract Drought stress is an unavoidable challenge limiting plant production and quality. Stigmasterol a potential compound for protection improvement productivity under drought. Thus, the effects of using stigmasterol as exogenous treatment on improving growth sunflower grown drought were studied. A pot experiment was carried out at two summer seasons, foliar 0, 100, 200, 300 mg L −1 plants d...

Background and objectives: The genus Johrenia belongs to Umbelliferae family and contains five species that are endemic to Iran. Johrenia paucijuga grows widely in the north-west, west and center of Iran. So far, there has been no research about phytochemistry of J. paucijuga. In the present study, phytochemicals of the plants have been isolated and their structures h...

Sterols, triterpenes, volatiles, polar and other constituents in aerial parts of Carthamus lanatus were analyzed by gas chromatography-mass spectrometry. Over 90 compounds were identified most of them new for the species. Sitosterol and stigmasterol were the most abundant of 10 sterols identified in the sterol fraction. Taraxasterol, alpha- and beta-amyrine prevailed in the triterpene fraction....

A hitherto unreported esterified form of steryl glucoside has been isolated from potato tuber lipids and soybean phosphatides. It is composed of sterol, glucose, and fatty acid in the molar ratio 1 : 1 : 1. Four components of the sterol moiety have been detected ; they include &sitosterol and stigmasterol (identified by gas-liquid chromatography). Fatty acids are palmitic, stearic, oleic, linol...

Olive oil is an important component of Mediterranean diet widely, consumed thanks to its numerous health-healing properties. Its quality dependent upon a set factors (genotypic, environmental, agronomic practices, ripening, etc). These are well documented, but little known about the impact extraction technology on ‘Moroccan Picholine’ olive quality. In this paper, physicochemical traits (cv Pic...

The chemical composition and CIELAB color parameters of oil from three aguaje morphotypes ( Mauritia flexuosa L.f.) extracted by supercritical carbon dioxide was investigated. By chromatography (HPLC GC), spectrometry (UV/vis), digital image colorimetry (digital camera), carotenoids, tocopherols, tocotrienols, fatty acids, total polyphenols, space were analyzed. These findings showed that the o...

OBJECTIVE To examine the anti-bacterial activity of leaf extracts of Morus alba L. (Moraceae) and Piper betel L. (Piperaceae), and seed extracts of Bombax ceiba L. (Borabacaceae). METHODS We have partially purified plant extracts by solvent extraction method, and evaluated the effect of individual fractions on bacterial growth using Escherichia coli (E. coli), Pseudomonas aeruginosa (P. aerug...

We prepared a crude gel material from Aloe vera succulent leaf tissues. The ethanolic extract of lyophilized A. vera gel was used for the GC-MS analysis. Hexadecanoic acid (22.22%) was identified as major compound. Sitosterol and stigmasterol were found to be 2.89% and 2.1% in the extract. HPLC analysis was carried out to confirm the presence of stigmasterol. The concentration of sterol extract...