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ESTABLISHING OF CHROMATIC AND ANTIOXIDANT CHARACTERISTICS OF SOME RED WINES FROM MINIS VINEYARD


MARIANA-ATENA POIANA 1 *, IOSIF GERGEN 2, ERSILIA ALEXA 1
(1)BANAT?S UNIVERSITY OF AGRICULTURAL SCIENCES AND VETERINARY MEDICINE, FACULTY OF FOOD PROCESSING TECHNOLOGY, AGRICULTURE PRODUCTS PROCESSING DEPARTAMENT, CALEA ARADULUI NO.119, RO-300645, TIMISOARA, ROMANIA (2)BANAT?S UNIVERSITY OF AGRICULTURAL SCIENCES

Issue:

SCSCC6, Volume VIII, No. 3

Section:

Volume VIII, No. 3 (2007)

Abstract:

Were characterized in relation to the antioxidant and chromatic properties the red wines processing in Minis vineyard from tree grapes varieties: Cabernet Sauvignon, Merlot and Pinot Noir harvested in 2004. It was determined the total antioxidant capacity, total polyphenols content and monomeric anthocyanins amount, as well as the main chromatic characteristics for young and aged in bottle for 12 months red wines. Total antioxidant capacity it was determined by FRAP method (expressed as mM Fe2+/L). The polyphenols content it was determined by Folin-Ciocalteu method (expressed such as mM gallic acid/L). The monomeric anthocyanins it was evaluated by differential pH method and the chromatic properties by standardized method and by Glories method. It was obtained that the chromatic and antioxidant characteristics of red wines present the distinctive values in rapport with wine’s evolution stage and grapes variety. By ageing, the antioxidant capacity decreases due to diminishing of total polyphenols content, especially monomeric forms of anthocyanins. The highest values for antioxidant capacity were founding in young red wine (particularly from Cabernet Sauvignon grape’s variety). The antioxidant capacity was highly correlated with the polyphenols amount (R= 0.9731).

Keywords:

red wines, chromatic parameters, polyphenols, monomeric anthocyanins, total antioxidant capacity.

Code [ID]:

CSCC6200708V03S01A0008 [0001969]

Full paper:

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