Port wines

Physical properties of Fullerene Cyg It does not melt below 360°, and starts to sublime at 350° in vacuo. A reddish-brown solid, greenish black in thicker films. Solns are port-wine red in colour. Mixtures of Csq and C70 are red due to C70 being more intensely coloured. It is less soluble than Cso in but also dissolves... 

The purified fullerenes have very attraetive eolours. Thin films of Cgo are mustard-eoloured (dark brown in bulk) and solutions in aromatie hydroearbons are a beautiful magenta. Thin films of C70 are reddish brown (greyish blaek in bulk) and solutions are port-wine red. C76, C78 and Cg4 are yellow. 

In 1747, the elder tree was banned in Portugal in an attempt to prevent its being used as a wine adulterant, even though it was therapeutic and caused no harm. In 1899, an American soldier visited a doctor in Prague, Czechoslovakia, and informed him that whenever he got drunk on dark red cheap Czech port wine, his rheumatism pains would disappear for... 

Lead may leach from lead crystal decanters and glasses into the liquids they contain. Port wine that contained an initial concentration of 89 pg/L lead was stored for 4 months in crystal decanters containing up to 32% lead oxide. At the end of 4 months lead concentrations in the port were 5,331, 3,061, and 2,162 pg/L in decanters containing 32%, 32%, and 24% lead oxide, respectively. Lead was also found to elute from lead crystal wine glasses within minutes. Mean lead concentrations in wine contained in 12 glasses rose from 33 pg/L initially to 68, 81, 92, and 99 pg/L after 1, 2, 3, and 4 hours, respectively (Graziano and Blum 1991). 

The spectra were recorded in the positive-ion mode in the range of m/z 120-1 500. Some chromatograms illustrating the effect of aldehydes on the interaction of mv3gl and B2-3 -gallate are shown in Fig. 2.120. The chromatograms demonstrate that different aldehydes influence differently the formation of anthocyanin-flavanol pigments. The results of HPLC-MS measurements are compiled in Table 2.94. Because free aldehydes display an unpleasant aroma in Port wine these reactions may improve the quality of wines and contribute to the colour formation [266],... 

N. Mateus, S.de Pascual-Teresa, J.C. Rivas-Gonzalo, C.Santos-Buelga and V. de Freitas, Structural diversity of anthocyanin-derived pigments in port wines. Food Chem. 76 (2002) 335-342. 

In severe cases, dark port-wine color to urine on standing... 

May show port-wine urine during episode Other porphyrias mainly cutaneous symptoms... 

Topical anesthetics such as EMLA cream, which is a mixture of lidocaine and prilocaine, can be quite effective in reducing pain associated with venipunture or intravenous line insertion, circumcision, and laser treatment of port wine stains (Wilder, 2000). 

Nilsson, M. et al., high-resolution NMR and diffusion-ordered spectroscopy of Port wine, J. Agric. Food Chem., 52, 3736, 2004. 

Vinyl-epicatechin-(epi)catechin pyranomalvidin Port wine 1265 ([M]+ 957) 575 HPLC-DAD ESI-MS, NMR 15... 

Reactions of anthocyanins and flavanols take place much faster in the presence of acetaldehyde that is present in wine as a result of yeast metabolism and can also be produced through ethanol oxidation, especially in the presence of phenolic compounds, or introduced by addition of spirit in Port wine technology. The third mechanism proposed involves nucleophilic addition of the flavanol onto protonated acetaldehyde, followed by protonation and dehydration of the resulting adduct and nucleophilic addition of a second flavonoid onto the carbocation thus formed. The resulting products are anthocyanin flavanol adducts in which the flavonoid units are linked in C6 or C8 position through a methyl-methine bond, often incorrectly called ethyl-link in the literature. 

Vitispiran ( )-6-methylene-2,10,10-trimethyl-l- oxaspiro[4.5]dec-7-en Balsamic, resinous 20-320, >800 in port wine [5] 800 [5]... 

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