The Content of Some Phenols in the Wines ‘Blatina’, ‘Vranac’, ‘Merlot’ and ‘Cabernet Sauvignon’ (Vitis Vinifera L.) from Bosnia and Herzegovina

In this work, for the first time, the phenolic composition of wine of the autochthonous Bosnian-Herzegovinian variety ‘Blatina’, the Montenegrin variety ‘Vranac’ and the internationally recognized varieties ‘Merlot’ and ‘Cabernet Sauvignon’ grown in Trebinje in Bosnia and Herzegovina was characterized. The characterization was carried out for all four varieties under the same conditions and with the same oenological procedures during the 2016 and 2017 research. It was found that the variety ‘Blatina’ has statistically significant lower values for gallic acid, vanillic acid, (+)-catechin, quercetin glycoside, rutin and malvidin-3-glycoside acetate than the other three observed varieties. For the indicators of quercetin and peonidin-3-glycoside, the variety ‘Blatina’ has significantly higher average values than the other three varieties. In the content of (−)-epicatechin, the variety ‘Blatina’ has significantly higher average values than ‘Vranac’ and ‘Merlot’, but statistically a significantly lower value than the variety ‘Cabernet Sauvignon’. For morin, the variety ‘Blatina’ has significantly lower average value than ‘Vranac’ and ‘Merlot’, but statistically significantly higher value than the variety ‘Cabernet Sauvignon’. As an indicator of malvidin-3-glycoside, the variety ‘Blatina’ has a significantly higher average value than ‘Merlot’ and ‘Cabernet Sauvignon’, but statistically a significantly lower value than the variety ‘Vranac’. For the indicator malvidin-3-glycoside para-coumarate, the variety ‘Blatina’ has a significantly higher average value than ‘Cabernet Sauvignon’, but statistically a significantly lower value than the varieties ‘Vranac’ and ‘Merlot’. The influence of the year and the joint influence of variety and year is very significant for all analyzed indicators.