NDA@SZTAKI

Variations in the extractability of certain phenolic components in Vitis vinifera cv. ‘Blaufraenkisch’ clusters and wines as a function of vine load

Leskó, A.

Kállay, M.

Akadémiai Kiadó

2011

info:eu-repo/date/embargoEnd/2031-01-31

QD01 Analytical chemistry / analitikai kémia

During the course of research, the extractability of various phenolic compounds were analysed in ‘Blaufraenkisch’ berry skins and wines produced by six types of vine load. A sample of the berry skin was detached from the harvested crop and following the extraction with hydrochloric acid-methanol the composition of the extractive and the wines prepared by microvinification was analysed. During the course of the tests, the total polyphenolic-, anthocyanin-, leucoanthocyanin- and catechin content of the samples were measured by the application of the spectrophotometric method. Based on the measured data, the extraction coefficients (EC %) were calculated for each vine load, and then through the application of statistical methods, the data of three vintages were evaluated. The results revealed that extractability does not necessarily depend on the method of cultivation or the vine load. No significant differences were found pertaining to either the extractability of the total polyphenolic-, leucoanthocyanin- or catechin content. However, the extraction coefficient of the anthocyanins in crops produced by cluster selection and cane-based cultivation was significantly lower than in the cluster-selected crops of vine-stocks with less bud load.

magyar

Article

PeerReviewed

info:eu-repo/semantics/article

text

http://real.mtak.hu/47939/1/aalim.40.2011.suppl.9.pdf

Leskó, A. and Kállay, M. (2011) Variations in the extractability of certain phenolic components in Vitis vinifera cv. ‘Blaufraenkisch’ clusters and wines as a function of vine load. Acta Alimentaria, 40 (Supple). pp. 91-100. ISSN 0139-3006

http://real.mtak.hu/47939/

http://dx.doi.org/10.1556/AAlim.40.2011.Suppl.9

info:eu-repo/semantics/embargoedAccess