All posts filed under: Volatile Acidity

Climate change a double-edged sword for Amarone producers

This year the Consorzio Tutela Vini Valpolicella marks its 50th anniversary, a milestone that coincides with the release of the challenged 2014 Amarone della Valpolicella vintage one that allowed the top performing wines presented during the anteprima tastings to stand apart. Due to wet conditions that delayed ripening and diluted fruit concentration, the consorzio wisely moved to reduce the 2014 production of Amarone by approximately half.  As a result, there were 50 percent fewer wines presented at the anteprima in January when 43 wines were poured at the blind tasting in comparison to 83 in 2017. My list of the wines that scored 89 points or greater can be found below. While vintage conditions in Valpolicella have become increasingly variable, according to University of Verona Professor Maurizio Ugliano climate change is actually working to hasten the drying process that is so critical to the production of Amarone. Regulations stipulate that producers are allowed to cool the air in the fruttai or drying rooms using fans but they cannot artificially heat it.  As such, warmer conditions …

The good, the bad and the ugly

Many who consider the sensory evaluation of wine to be a purely subjective exercise cite our differences in perception as the basis for that belief. While it’s true that our abilities to perceive aromas and tastes vary, using an olfactometer we’re able to accurately measure the thresholds at which different tasters perceive the volatile organic compounds found in wine. Research has also shown that a like group of tasters, those who are equal to the task, can consistently gauge the intensities of the aromas, tastes and structural aspects of wine. Compared to humans, who scientists believe can detect in excess of one trillion odors and identify a few thousand, the latest generation of olfactory and gustatory biosensors can detect up to 350 smells in about 15 seconds. Developed by a molecular biologist and nanobioscientist in Grenoble, France, the Aryballe Technologies NeOse Pro, a handheld e-nose that made its debut at the Consumer Electronics Show this January, uses surface plasmon resonance imaging (SPRi) and biochemical sensors to analyze volatile organic compounds responsible for aroma and taste. …