Phenolic profile and free radical‐scavenging activity of Cabernet Sauvignon wines of different geographical origins from the Balkan region

Abstract

The concentrations of the main components catechin and quercetin can be used as biochemical markers for the authentication of red grape cultivars and their corresponding single-cultivar wines.

Phenolics content and antioxidant capacity of Chilean grapes cv. País and Cabernet Sauvignon

“…Additionally, we did not observe significant differences between the three fractions analyzed. Unlike our results, Radovanovic´, Radovanovic´& Souquet (2010) observed high correlations between the free radicalscavenging ability (DPPH assay) and the contents of catechin in CS wines, stating that catechin can be used as antioxidant marker for the authentication of red grape cultivars and their corresponding single-cultivar wines.…”

The anthocyanin content and bioactivity of cornelian cherry (Cornus mas) and wild blackberry (Rubus fruticosus): Fruit extracts from the Vlasina region

“…Determination of antioxidant activity Total phenol content was determined spectrophotometrically [12,13]. The dilute extract was mixed with 2% HCl in 95% ethanol approximately 15 min before reading the absorbance at 280 nm with a UV/Vis Agilent 8453 spectrophotometer.…”

“…The system was equilibrated using starting conditions for 10 min prior to injection of the next sample. The flow-rate was at 0.8 ml/min [13]. The detection wavelength was 520 nm.…”

Antioxidant and Antimicrobial Activity of Polyphenol Extracts from Wild Berry Fruits Grown in Southeast Serbia

“…Total phenols, tartaric esters and flavonols in fruit samples were determined spectrophotmetrically [12,13]. The dilute extract was mixed with 2 % HCl in 95 % ethanol approximately 15 min before reading the absorbance at 280, 320 and 360 nm with a UV/VIS Agilent 8453 spectrophotometer.…”

“…The system was equilibrated using the starting conditions for 10 min prior to injection of the next sample. The flow-rate was at 0.8 ml min -1 [13]. The detection wavelength were 280, 320, 322/275 (λ Ex /λ Em ) and 360 nm.…”