As you know, wine character and personality depend on many factors such as the climate or the soil. These influences may determine the final quality of the grapes and the wine’s color and taste. If you want to better understand this process, today we will discover the parts of the grape and the functions that each one plays.

  • Skin: the skin contains all the nutrients, can represent around the 20% of the total mass of the grape and protects the inside part of the grape. At first, this part is green and becomes yellow or red during its development and ripening. It has the pigments that will add color to the wine since the skin holds the polyphenols. The tannins that can be found in the skin are responsible for the texture and structure of red wines.
  • Pulp: the pulp represents around three-quarters of the grape’s weight. It is mainly composed of water, where we can find sugars, some acids and other nutrients. Sugars, as glucose and fructose, are essential for the correct development of the wine. Firstly, yeasts transform this element into alcohol during the fermentative process. Secondly, sugars contribute to wine’s flavor and sweetness. The pulp also contains malic, tartaric and citric acid, which add character and help to the natural preservation of wine.
  • Seeds: between one to four seeds can be found in the inside of a grape, representing up to the 5% of its total mass. Seeds have a great content of tannins and oils and are the reproductive pathways of vines. If grapes are collected before they have matured, seeds leave a bitter astringent taste on wine.
  • Stalk: the stalk is the small part that joins the grape with the plant. Besides its structural function, the stalk allows nutrients to flow from the vine to the fruits.
  • Bloom: the waxy coating that covers the cuticle of the skin is known as bloom. It holds the yeasts that perform during the natural fermentation and also protects the grape to avoid degradation and not to lose humidity.

As you can see, grapes contain key substances to the correct development of the fermentative process, therefore, to get the wine you want to. This is the reason why you should be aware of everything that happens to them. How can you get complete information about what’s hidden in the grapes? A WineSeq Test is the best tool to unveil all that unknown data.