beta-Damascenone, a C-13 norisoprenoid compound, is usually presented as an impact odorant in red wines. Its direct contribution to their aroma was investigated. Both free beta-damascenone and beta-damascenone precursors were isolated from various French red wines and then analyzed by gas chromatography-mass spectrometry, revealing concentrations in the vicinity of 1 and 2 microg/L for free com...

BACKGROUND A basic premise of the recently proffered color-in-context model is that the influence of color on psychological functioning varies as a function of the psychological context in which color is perceived. Some research has examined the appetitive and aversive implications of viewing the color red in romance- and achievement-relevant contexts, respectively, but in all existing empirica...

The differential sensitivities to permanganate oxidation of the red and far-red forms of native phytochrome from Avena sativa L. cv Mulaga (isolated as Pfr from red-irradiated tissue) and of partially degraded phytochrome (isolated as Pr from nonirradiated tissue) were determined. The far-red absorbing form of partially degraded phytochrome was 5 times more sensitive than its red-absorbing form...

Lipide extracts of the red cells of several animal species have been analyzed chromatographically. Genetically determined differences in phospholipide composition were found. Lecithin is absent from the cells of ox, sheep, and goat. Cells containing lecithin are susceptible to the direct hemolysin of cobra venom while cells not containing lecithin are resistant. The facts indicate that the dire...

A simple procedure for determination of trans-resveratrol in wines from Alentejo region delimited appellation (Portugal) is described and validated. A set of 47 red and 21 white wines was analysed by direct injection in high performance liquid chromatograph with UV detector. A detection limit of 0.06 mg/L was achieved. Global uncertainty associated with the results, according to EURACHEM/CITAC ...

abstract background and objective: snake venom is a complex of several toxic elements and enzymes. it has the agents with the ability to destroy cellular and subcellular membrane and to bring about hemolysis of red blood cells (rbc). two types of direct and indirect hemolytic activity are known in snake venom in that phospholipase a2 is responsible for the indirect lysis. the aim of this study ...

a 3-month-old male red fox that was in contact with a persian cat referred to the small animal hospital, faculty of veterinary medicine, university of tehran with multi-focal circular non-pruritic skin lesions and hair loss mainly on the head and extremities. a complete series of dermatologic tests such as wood’s light examination, direct microscopic examination, and fungal culture were perform...