Aroma Evaluation of Young Chinese Merlot Wines with Denomination of Origin
Abstract
Merlot wines from four premium wine-producing districts in China were analysed for their volatilecomposition and sensory properties. Fifty-seven aroma compounds were quantified by SPME-GC-MSOAV
analysis, which showed that thirty of these compounds were active on the basis of their odour active value
(OAV). According to the aroma descriptions of eleven impact odorants in all the sample wines, the collective
aroma characteristics of Chinese Merlot red wine are complex. Its main flavour is that of some tropical and
temperate fruits, such as banana, pineapple, green apple, pear and strawberry, along with a lactic flavour
from the malolactic fermentation. It also has some traits of processed fruits, Muscat and floral pollen flavour.
Moreover, different districts gave Merlot wine distinct characters. Changli wine had a higher intensity and
complexity of global aroma, a strong fruity aroma, and an obvious nuance of lactic and nut traits. The
sine from Helanshan had weak fusel flavour and some lemon fruity flavour. Shacheng wine had weak fusel
flavour, along with green grass and some fruity flavour of raspberry and violet. Manasi wine had the odour
of unpleasant fatty acids and phenol due to its high content of fatty acids and volatile phenol. The sensory
analysis confirmed the aroma prediction from the active odorants of the sample wines. Changli wine had
the highest sensory scores, while Manasi wine had the worst evaluation of aroma, taste and harmony. The
results suggest that the Merlot variety is more suitable for planting in Changli than in the Manasi region.
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