20 June 2024
Unconventional yeast boosts carbonic maceration wine quality

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Unconventional yeast has been found to significantly improve the quality of carbonic maceration wine, a type of young red wine known for its floral and fresh fruit aromas. Carbonic maceration wines, such as Beaujolais nouveau in France and those produced in La Rioja and Catalonia, are gaining popularity in the market and must be consumed within the first year. The use of unconventional yeast in the winemaking process has shown promising results, leading to improved wine quality and enhanced flavor characteristics.

Unconventional Yeast Enhances the Quality of Carbonic Maceration Wines

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Published on: September 30, 2023 Description: Dr. Nichola Hall is Technical Director in Fermentation and Enology at Scott Laboratories in Hearldsburg, CA. In this presentation ...
The Role of Conventional and Non-conventional Yeast in Winemaking

In the world of winemaking, carbonic maceration stands out as a unique and captivating technique that produces young red wines with a distinctive charm. These wines are characterized by their vibrant floral and fresh fruit aromas, a delightful expression of nature’s bounty. While Beaujolais nouveau from France is perhaps the most renowned example, this technique also has deep roots in regions like La Rioja and Catalonia, particularly in the Montsant and Conca de Barberà areas.

Unconventional Yeast Elevates the Sensory Experience of Carbonic Maceration Wines

As the demand for carbonic maceration wines continues to soar, winemakers and researchers are on a quest to unlock new heights of quality and flavor. A groundbreaking study conducted by the University of Rovira i Virgili has revealed the potential of an unconventional yeast, Torulaspora delbrueckii, to elevate the sensory experience of these wines. This remarkable yeast not only enhances the organoleptic properties but also accelerates the malolactic fermentation process, a crucial step in winemaking that adds complexity and smoothness to the final product.

Unconventional Yeast Unveils Its Magic in Carbonic Maceration, Rosé, and Sparkling Wines

The research team embarked on a comprehensive investigation, inoculating strains of Torulaspora delbrueckii into carbonic maceration wines, rosé wines, and orange wines. Their findings were nothing short of astonishing. The wines produced exhibited a more intense color, thanks to the preservation of anthocyanins, the compounds responsible for the captivating red hues. Furthermore, the aromatic profile was enriched, with an enhanced presence of banana and other fruity notes that define these wines.

Unconventional Yeast Accelerates Malolactic Fermentation, Symphony of Flavors

Beyond the sensory enhancements, the researchers discovered that Torulaspora delbrueckii also accelerated the malolactic fermentation process, reducing the overall vinification time. This transformation adds complexity, smoothness, and stability to the wine, creating a harmonious balance of flavors.

Unconventional Yeast Unlocks Potential in Rosé and Sparkling Wines, A New Frontier

The positive results obtained in carbonic maceration wines prompted the researchers to explore the potential of Torulaspora delbrueckii in rosé and sparkling wines. The findings were equally promising, demonstrating the versatility of this unconventional yeast in enhancing the quality of a diverse range of wines.

Conclusion: A Toast to Innovation and Quality

The discovery of Torulaspora delbrueckii’s remarkable impact on carbonic maceration, rosé, and sparkling wines marks a significant advancement in the world of winemaking. This unconventional yeast opens up new avenues for winemakers to craft exceptional wines with heightened organoleptic properties. As this knowledge finds its way into the hands of winemakers, it has the potential to revolutionize the industry, leading to a new era of captivating and unforgettable wines.


1. What is carbonic maceration?

Carbonic maceration is a unique winemaking technique that produces young red wines with vibrant floral and fresh fruit aromas. It involves whole bunches of grapes being placed in a sealed container with carbon dioxide, allowing for a controlled fermentation process that extracts color and flavor from the grapes.

2. Where is carbonic maceration used?

Carbonic maceration is widely used in regions like Beaujolais in France, La Rioja and Catalonia in Spain, and parts of Italy and California. It is particularly popular for producing Beaujolais nouveau, a light and fruity wine released shortly after harvest.

3. What are the benefits of using Torulaspora delbrueckii in carbonic maceration wines?

Torulaspora delbrueckii is an unconventional yeast that has been found to enhance the sensory experience of carbonic maceration wines. It intensifies the color, preserves anthocyanins, and enriches the aromatic profile with more pronounced banana and fruity notes.

4. How does Torulaspora delbrueckii accelerate malolactic fermentation?

Torulaspora delbrueckii accelerates malolactic fermentation, a crucial step in winemaking that converts harsh malic acid into softer lactic acid. This transformation adds complexity, smoothness, and stability to the wine, creating a more balanced and harmonious flavor profile.

5. Is Torulaspora delbrueckii also beneficial for rosé and sparkling wines?

Yes, Torulaspora delbrueckii has shown promising results in enhancing the quality of rosé and sparkling wines as well. It can intensify the color, preserve freshness, and contribute to a more complex aromatic profile in these wines.

Links to additional Resources:

1. https://www.sciencedirect.com/science/article/abs/pii/S0308814622001967 2. https://www.winebusiness.com/news/?go=getArticle&dataId=262614 3. https://www.decanter.com/wine-news/carbonic-maceration-wines-461226/

Related Wikipedia Articles

Topics: Torulaspora delbrueckii (yeast), Carbonic maceration (winemaking), Beaujolais nouveau (wine)

Torulaspora delbrueckii
Torulaspora delbrueckii is a ubiquitous yeast species with both wild and anthropic habitats. The type strain of T. delbrueckii is CBS 1146T, equivalent to CLIB 230 or ATCC 10662, etc.. The type strain of T. delbrueckii CBS 1146 T was sequenced in 2009, and is composed of 8 chromosomes in...
Read more: Torulaspora delbrueckii

Carbonic maceration
Carbonic maceration is a winemaking technique, often associated with the French wine region of Beaujolais, in which whole grapes are fermented in a carbon dioxide rich environment before crushing. Conventional alcoholic fermentation involves crushing the grapes to free the juice and pulp from the skin with yeast serving to convert...
Read more: Carbonic maceration

Beaujolais nouveau
Beaujolais nouveau ( BOH-zhə-LAY noo-VOH, French: [boʒɔlɛ nuvo]) is a red wine made from Gamay grapes produced in the Beaujolais region of France. It is a vin de primeur, fermented for just a few weeks before being released for sale on the third Thursday of November. Distributors famously race to...
Read more: Beaujolais nouveau

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