The difference for white wine fermentation tanks and red wine fermentation tanks
The main differences between fermentation tanks used for white wine and those used for red wine primarily revolve around factors such as material, design, and temperature control. Here’s a breakdown of these variances:
1.Size and shape:
White Wine Tanks: Tanks used for white wine fermentation are often larger and more cylindrical in shape. This allows for efficient cooling and temperature control during fermentation, which is crucial for preserving the delicate aromas and flavors of white wines.
Red Wine Tanks: Tanks for red wine fermentation can vary in size and shape, but they often have a wider, shallower design compared to white wine tanks. This design facilitates the management of grape skins during maceration and extraction, which is essential for red wines’ color, tannin, and flavor development.
2.Design:
White Wine Fermentation Tanks: Stainless steel tanks used for white wine fermentation are often designed with cooling jackets. These jackets allow for precise temperature control during fermentation, which is crucial for preserving the delicate aromas and flavors of white wine grapes.
Red Wine Fermentation Tanks: While stainless steel tanks used for red wine fermentation may also have cooling jackets, they may differ in design to accommodate processes like punch-downs or pump-overs, which are techniques used to extract color, tannins, and flavor compounds from the grape skins during fermentation. Additionally, tanks used for red wine fermentation are often larger, as red wine typically undergoes longer maceration periods compared to white wine.
3.Material:
White Wine Tanks: Stainless steel tanks are commonly used for white wine fermentation. Stainless steel is inert, easy to clean, and can be temperature-controlled, making it ideal for fermenting white wines at cooler temperatures.
Red Wine Tanks: Red wine fermentation tanks can be made of various materials, including stainless steel, concrete, and oak. Stainless steel is still widely used, but many red wine producers also opt for oak fermentation vessels, especially for premium wines, as they can impart desirable flavors and textures to the wine during fermentation.
4.Temperature Control:
White Wine Tanks: Temperature control is crucial for white wine fermentation to preserve the delicate aromas and flavors. Stainless steel tanks are equipped with cooling jackets or temperature control systems to maintain fermentation temperatures typically between 50-65°F (10-18°C).
Red Wine Tanks: While temperature control is also important for red wine fermentation, the temperature range is usually slightly higher, typically between 70-85°F (21-29°C). This higher temperature facilitates the extraction of color, tannins, and flavor compounds from the grape skins.
5.Fermentation Techniques:
White Wine Tanks: White wine fermentation often involves a process where the grape juice is separated from the skins before fermentation begins, as white wines are typically made without prolonged skin contact. This separation is easier to achieve in stainless steel tanks.
Red Wine Tanks: Red wine fermentation involves maceration, where the grape skins remain in contact with the juice during fermentation. Tanks for red wine fermentation are designed to facilitate this process, allowing for gentle extraction of color, tannins, and flavor compounds from the skins.
In summary, the differences between white wine fermentation tanks and red wine fermentation tanks primarily stem from the unique needs of each type of wine during fermentation, including temperature control, extraction techniques, and vessel design.