Recently, new clones of Merlot and Cabernet Franc grapes have been developed, and a recent study investigated the impact of clonal variability on the phenolic and radical scavenging activity of grapes and wines. The results of the study suggest that different clones can significantly impact grape and wine composition, and that understanding the clonal variability is crucial for winemakers to ensure consistency in quality, taste, and aroma.
Phenolic compounds are a group of secondary metabolites found in plants, including grapes, that have a range of biochemical functions. Phenolic compounds can provide protection from UV radiation, act as antioxidants, and even function as signaling molecules. In grapes, phenolic compounds are an essential component of wine production, contributing to the color, taste, and aroma of wines.
The study found that the phenolic composition of Merlot and Cabernet Franc grapes varied significantly between different clones. The researchers analyzed different clones of Merlot and Cabernet Franc grapes and identified significant variations in total phenolic content, as well as individual phenolic compounds such as anthocyanins and tannins.
The radical scavenging activity, another critical parameter for winemakers, was also found to be different in different clones of Merlot and Cabernet Franc grapes. This activity measures the ability of grape and wine extracts to protect against oxidative stress, which can negatively impact wine aroma, taste, and shelf-life. The researchers found that different clones had different radical scavenging activities, with some clones exhibiting higher antioxidant activities than others.
The variability in grape composition and antioxidant activity seen in this study could result in significant differences in the taste and aroma of the resulting wines. It is essential for winemakers to understand this variability and select clones that produce wines that meet their desired characteristics.
In conclusion, new clones of Merlot and Cabernet Franc grapes have been developed, and while they have notable differences in phenolic compounds and radical scavenging activities, they also hold great promise for winemakers. Understanding this variability will help winemakers produce wines that are consistent in quality, taste, and aroma, and offer new opportunities for viticulture and wine production in the future.
In summary, Vitis vinifera L. is a widely cultivated grape species used in wine production worldwide. New clones of Merlot and Cabernet Franc grapes have recently been developed, and a study found that different clones significantly impact the phenolic and radical scavenging activity of grapes and wines. Understanding this variability is crucial for winemakers to ensure consistency in quality and taste, and offers new opportunities for viticulture and wine production in the future.