Expertise documents | Lallemand Wine

Wine Yeasts

WINE YEASTS WINE BACTERIA NUTRIENTS / PROTECTORS SPECIFIC INACTIVATED YEASTS ENZYMES CHITOSAN VINEYARD SOLUTIONS ALL RANGES

Type of document

ARTICLES BROCHURES LALLEMAND SCIENTIFIC INTERVIEWS OENOMAG/EMAG OTHERS REFERENCE MATERIAL UNDER INVESTIGATION WINE EXPERT WINEMAKING UPDATE

The New Winemaking Update – Organic Version: Copper sulfate use in organic vineyards – are wine yeast and bacteria affected by this fungicide?

In 2017, the organic vineyard areas had tripled in 10 years and approximately 5% of worldwide vineyards are now under organic certifications. For organic growers, who cannot use other fungicide sprays, copper sulfate is still an effective tool against downy mildew. With the increased production of organic vineyards in the world, the use of this fungicide has also grown with the expansion of this type of farming. It is known that elevated concentrations of this metal can be toxic to yeasts and bacteria. Our results have shown that wine yeast and bacteria do not appear to be significantly affected by Cu concentrations higher than 15 mg/L, except in the case of malolactic fermentation in white wines, where concentration > 7.5 mg/L can impact the MLF. High pH and high Cu concentrations can impact wine yeast viability and lag phase. To read more about this topic, please consult our Winemaking Update - Organic Version WUP Organic 2020 Cu- ENG LR

Low SO2 levels are key in high quality bulk wine production!

Saccharomyces cervevisiae yeasts in winemaking conditions spontaneously produce SO2 during their fermentative activity. The level of production could be higher than 60mg/L. This production depends on many environmental factors such as pH, temperature, grape variety... but it is also linked to the yeast strain genotype. Lalvin has been especially selected for its very low production of SO2 with the security to complete alcoholic fermentation. ICV OKAY®

Oenomag – Managing acidity and alcohol in wine and low SO2 producing yeasts.

Learn about a new, patented yeast selection technique, and the first wine yeast selected within the Saccharomyces cerevisiæ species for its natural ability to significantly acidify must during fermentation Oenomag ENG

Biodiversity meets Terrior – 2016 Proceedings of the Entretiens Scientifiques Lallemand

Proceedings of the XXVIth Entretiens Scientifiques Lallemand held in Osoyoos, Canada focused on understanding that microbiological diversity is essential for controlling the production of quality wine. Topics presented included the diversity of microbial populations in the vineyard and in winery fermentations. ESL 2016 Canada - ENG

Understanding varietal aromas during alcoholic and malolactic fermentations

Proceeding of the XXIVes Entretiens Scientifiques Lallemand - 'Understanding Varietal Aromas During Alcoholic and Malolactic Fermetnations'. This booklet includes a presentation by Dr Matthew Goddard, School of Biological Sciences, University of Auckland, New Zealand titled 'Merging Ecology of Wine Microbiology" Download PDF