Abstract:
Autochthonous wine variety Fetească Neagră is a red wine known for high quality rich flavor, pleasant and
complex associated with black currant flavor and balanced taste, consistent and vigorous. Red wines produced in four
different wine growing regions of Romania were analysed for total polyphenols content and antioxidant activity. The
total polyphenols content was determined by Folin - Ciocalteu method and antioxidant activity was measured DPPH
method. Determined values of antioxidant activity in observed wines were within the interval 56.74 – 94.08% inhibition
of DPPH (average value was 70.92% inhibition of DPPH) and total polyphenol content ranged from 1776 to 2935 mg
gallic acid/liter (average content was 2218 mg gallic acid/L). Our results showed that the antioxidant activity of tested
wines were directly influenced by the total phenolic contents. As a result, we mention that wines with a higher total
phenolic contents showed the highest values of antioxidant activity. Particularly, autochthonous wine variety Fetească
Neagră had the highest total polyphenols content, the highest concentration of important antioxidants and significantly
higher antioxidant activity. There was a very high correlation between antioxidant activity and total polyphenols content
in all of the tested wines.
