Product details


Lalvin BM4x4

Selected by the Consorzio del Vino Brunello de Montalcino and the University of Siena, Italy

Saccharomyces cerevisiae cerevisiae

Competitive Factor

General Sensory Contribution
Enhances Varietal Character

Red Wine

White Wine

For security and mouthfeel

BM4X4 is a blend of Lalvin BM45 and another yeast known for its fermentation reliability. Positive interaction between strains creates a wine with increased aromatic intensity, color intensity, length of finish, and dependable fermentation. Lalvin BM45 is known and appreciated around the world for its round mouthfeel and stable color but however, it is a slow fermenter and can require substantial nutrients to complete fermentation successfully and without the production of H2S. On the other hand, BM4x4 has the unusual capacity of releasing a significant quantity of polyphenol reactive polysaccharides into the fermenting must during the yeast growth phase. The quantity and the quality of the polysaccharides released during fermentation, facilitate the production of red wines with great mouthfeel and improved color stability with dependable fermentation kinetics under difficult fermentation conditions. BM4x4 also brings roundness to the mouthfeel and facilitates malolactic fermentation

Fermentation Speed

Lag Phase

Nitrogen Needs

Alcohol Tolerance
16 %

Volatile Acidity

SO₂ Production

Max. Temperature
28 °C

Min. Temperature
16 °C

H₂S 170ppm

H₂S 60ppm

Acetaldehyde Production

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