Optimization of in vitro establishment of grapevine varieties for fast micropropagation 

Disease-resistant grapevine varieties (PIWI) represent one of the most relevant achievements of contemporary grapevine breeding, developed in response to increasing environmental pressures, climate change, and the need to reduce pesticide inputs in viticulture.

According to the OIV, consumption of rosé wines exceeded worldwide production by 6% (1). These figures stimulated the experimental vinification of 3 different rosé styles for each of the cultivar Merlot, Pinot Noir and Dornfelder.

The postharvest dehydration of grapes is a traditional practice to obtain wines with unique traits (e.g., sweet, dry/reinforced).

Wine varietal aroma is the result of a mixture of compounds formed or liberated from specific grape-aroma precursors. Their liberation/formation from their specific precursors can occur spontaneously by acid catalyzed rearrangements or hydrolysis or by the action of the yeast enzymatic activities. The influence of yeast during fermentation on the production of these volatile compounds has been widely studied however, the effect of this influence during aging is not fully understood. In order to evaluate these processes several indirect strategies have been used to study aroma precursors although they are not useful to understand the chemistry of the process.

The wine industry produces an enormous amount of waste every year. A wider inclusion of disregarded by-products in the human diet or its use as a source of bioactive compounds is a good strategy for reducing waste. It will not only introduce an added value to a waste product but also come upon the European Union and United Nations’ demands towards more sustainable agricultural approaches and circular economy.