Acti-ML – Lallemand Nutrient Blend for Reliable Malolactic Fermentation
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Stimulates fast and complete malolactic fermentation in challenging wines
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Provides essential peptides, vitamins, and minerals to support Oenococcus oeni
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Reduces lag phase and promotes bacterial survival during MLF
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Helps avoid sluggish or stuck malolactic fermentation, especially in high-alcohol or low-pH wines
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Optimized for co-inoculation or sequential inoculation, with a formulation superior to generic yeast hulls
Acti-ML is a complex nutrient blend developed by Lallemand to support the specific needs of malolactic bacteria during MLF. It is composed of yeast autolysates and naturally derived components rich in peptides, amino acids, vitamins, and minerals. These nutrients are critical for Oenococcus oeni, especially in conditions where nutrient content is limited or inhibitory compounds like alcohol, low pH, or SO₂ are present. Acti-ML shortens the lag phase and improves cell viability, helping ensure a strong and complete malolactic fermentation. Compared to simple yeast hulls or non-specific nutrients, Acti-ML is formulated specifically for malolactic bacteria, giving winemakers a more targeted and effective solution.
Protocol
Suspend Acti-ML in 10 times its weight of clean, chlorine-free water or wine at 20–25°C. Allow to hydrate for 5–10 minutes with gentle stirring. Add to the wine just before or at the time of malolactic bacterial inoculation. Compatible with both co-inoculation (24–48 hours after yeast inoculation) and sequential inoculation (after alcoholic fermentation is complete). Ensure thorough mixing in the tank.
Usage Rates
Recommended dosage: 20–40 grams per hectoliter
= 0.2–0.4 grams per liter
= 0.76–1.5 grams per gallon
Use the lower end of the range for clean, balanced wines with moderate alcohol and the higher end for wines with elevated alcohol, low pH, or other stress factors.