Eighteen sterols were identified in Botryllus schlosseri, stanols being the main sterols. The sterol composition is in agreement with our recent paper on taxonomic separation of tunicates into three groups. Again we found in invertebrates of the Black Sea sterols with a (22Z)-double bond. This confirms the presence of such sterols in nature. The composition of the phospholipids appeared to be c...

Sterols, volatiles and lipids were isolated and identified from lipophylic extracts from two tunicates, Styela sp. and Phallusia sp., occurring in the Eastern Mediterranean. Seventeen sterols were identified. The sterol composition of the two organisms appeared to be similar except for the concentrations of 5alpha-stanols. Both tunicates were characterized by the presence of sterols with a (22Z...

The addition of ergosterol to cultures of Tetrahymena pyriformis results in (a) the accumulation of the sterol by the cells; (b) the inhibition of the synthesis of the pentacyclic triterpenoid alcohol, tetrahymanol; (c) the replacement of tetrahymanol by ergosterol in the ciliate membranes. The dry weight and lipid content of sterol-supplemented ciliates did not differ from the controls. Examin...

Christiansen, L.I, 2002. Preparation, analysis and cholesterol lowering effect of a novel microcrystalline β-sitosterol suspension in oil and phase behaviour of β-sitosterol with cholesterol. Dissertationes Biocentri Viikki Universitatis Helsingiensis 11/2002, pp. 54 ISBN 952-10-0508-4 (print) ISBN 952-10-0509-2 (pdf) ISSN 1239-9469 Few efforts have been made to formulate preparations suitable ...

*Corresponding author (e-mail: [email protected]) *Present address: Geology and Geophysics Research Division, Technology Research & Development Department, Japan Oil, Gas and Metals National Corporation, 1-2-2, Hamada, Mihama-ku, Chiba-city, Chiba 261-0025, Japan. **Present address: Integrated Ocean Drilling Program-Management International, Sapporo Office, CRIS Bldg, Hokkaido University, N...

abstract: the object of this study is to extract the oil from millets and evaluate the chemical properties of the extracted oil. commercial millet oil was obtained by cold solvent extraction adopting soxhlet procedure. quantitative and qualitative tests concerned with the non-saponifiable matter, fatty acid composition, phosphorus content representing total phospholipids, refractive index, pero...

The aim of this study examined the characterization of extra virgin olive oil samples from the main cultivar Chemlali, grown in five olive orchards with different soil type (Sandy, Clay, Stony, Brown, Limestone and Gypsum). Volatile compounds were studied using headspace-solid phase micro-extraction (HS-SPME) and gas chromatography-mass spectrometry (GC-MS) technics. Moreover, the sterol profil...

Membrane specialization through lateral compartmentalization is pivotal to the development of organisms and their response to environmental signals. The membrane raft hypothesis is lively discussed as a concept for domain formation. In recent years plant scientists have begun to critically assess the membrane raft hypothesis, and this provided the first insights into the mechanisms underlying m...