Authors:M. Dimitrovska, M. Bocevska, D. Dimitrovski and D. Doneva-Sapceska
allagher , A.V. , R ighetti , T.L. & K ennedy , J.A. ( 2007 ): Influence of vine vigor on grape ( Vitis vinifera L. Cv. PinotNoir) anthocyanins. Anthocyanins and pigmented polymers in wine, J. Agr. Food Chem. , 55 , 6585 – 6595
Drought stress caused substantial damage to the certified vineyard examined in Szomód, Hungary, in 2004. The varieties included in the experiment were Chardonnay, Sauvignon Blanc, Királyleányka, Pinot Noir and Kékfrankos. Drought caused the greatest deterioration in yield quantity and quality in the varieties Kékfrankos and Királyleányka. The yield was 66% lower and the quality 3 MM° (Hungarian must degrees) lower than that recorded on the control area, which was less severely affected by the drought. In the case of Pinot Noir the soil water-holding capacity (WHC%) was below the critical 15% value, again leading to a decline in yield quantity and sugar concentration, though the difference compared with the control was not as great as for the two former varieties. Although the yield of Chardonnay decreased slightly, the quality improved. This could probably be attributed to the similarly low soil WHC% in the control and drought-struck areas.All in all it could be concluded that all the vine varieties exhibited stress symptoms at a soil WHC of below 30%. The varieties could be divided into three groups on the basis of stress sensitivity, with Királyeányka and Kékfrankos in the most susceptible group, Chardonnay in the moderately susceptible group, and Pinot Noir and Sauvignon Blanc intermediate between the two.
Authors:Zsuzsa Király-Véghely, György Kátay, Ernő Tyihák and Jean-Michel Merillon
A simple method is described for separation and determination of the isomers of
-resveratrol and related compounds from different types of red wine by overpressured layer chromatography (OPLC). Comparison of OPLC with TLC clearly showed the advantages of the forced-flow technique (higher theoretical plate number, good resolution, etc.) over conventional planar layer liquid chromatography. It was established that the glycosides of resveratrol isomers were always present in higher concentrations than free stilbene isomers in red wine samples. This was especially true for the Pinot Noir wine. Exploitation of the advantages of OPLC provides further possibilities of analysis and isolation of stilbene isomers from grapes and wine.
Authors:Milica Atanacković Krstonošić, Jelena Cvejić Hogervorst, Mira Mikulić and Ljiljana Gojković-Bukarica
available red wines from Serbia were analyzed (Prokupac, PinotNoir, and Cabernet Sauvignon). Sample PinotNoir was diluted five times with distilled water for catechin analysis. Samples were filtered through Agilent Technologies Econofilter 0.45-μm RC prior
Authors:H. Kalkan Yildirim, U. Yücel, Y. Elmaci, G. Ova and T. Altug
) on the flavour of Burgundy Pinotnoir. An examination of variation among individual trees. Am. J. Enol. Vitic. , 50 , 447-454.
The influence of oak wood (Q. robur L, Q. petraea) on the flavour of Burgundy Pinotnoir. An
Authors:V. Piližota, M. Kopjar, N. Županić and N. Balija
Mazza, G., Fukumoto, L., Delaquis, P., Girard, B. & Ewert, B. (1999): Anthocyanins, phenolics and color of cabernet franc, merlot and pinotnoir wines from British Columbia. J. Agric. Fd Chem. , 41 , 4009