منابع مشابه
Potential grape-derived contributions to volatile ester concentrations in wine.
Grape composition affects wine flavour and aroma not only through varietal compounds, but also by influencing the production of volatile compounds by yeast. C9 and C12 compounds that potentially influence ethyl ester synthesis during fermentation were studied using a model grape juice medium. It was shown that the addition of free fatty acids, their methyl esters or acyl-carnitine and acyl-amin...
متن کاملA study of heavy metal complexation in grape juice
Differential Pulse Anodic Stripping Voltammetry, DPASV, has been used to monitor the initial stages of grape juice fermentation, focusing on Zn interactions with natural occurring ligands. Langmuir and Scatchard linearization methods have been employed. A 1:1 ratio has been found by either method; from Langmuir data analysis only one ligand population was found, while Scatchard approach gave ri...
متن کاملHeavy metal concentrations in human eyes.
PURPOSE To measure the concentration of toxic heavy metals in the fluids and tissues of human eyes. DESIGN Laboratory investigation. METHODS Thirty autopsy eyes of 16 subjects were dissected to obtain the aqueous, vitreous, lens, ciliary body, retina, and retinal pigment epithelium/choroid. Concentrations of lead, cadmium, mercury, and thallium in ocular tissues, ocular fluids, and blood we...
متن کاملAirborne metal concentrations in shipyard environment.
Protection against corrosion in the shipyard is a source of airborne particles. From October 1996 to September 1997 samples of suspended particles (1 site) and dustfall (6 sites) were collected in the vicinity of a repairs shipyard situated in the martinsćica Cove, east of the city of Rijeka, Croatia. Collected samples were analysed for lead, cadmium, iron, copper, and zinc content. Though annu...
متن کاملExplaining metal concentrations in sympatric Chironomus species
We compared metal concentrations in larvae of two Chironomus species (Chironomus staegeri and Chironomus tigris) living in the same lake and at the same depth and time. Concentrations of the nonessential metal cadmium (Cd) differed greatly (.83) between the two species, whereas those of two essential metals differed either much less (zinc [Zn], 23) or not at all (copper [Cu]). These trends were...
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ژورنال
عنوان ژورنال: South African Journal of Enology and Viticulture
سال: 2021
ISSN: 2224-7904
DOI: 10.21548/42-1-4238