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Berry skin thickness: a Key factor for grapegrowers and winemakersLalVigne under Investigation #2 Skin plays a fundamental role for the grape composition and wine quality along with the viticulture and winemaking processes, as they are the most important source of aroma and polyphenol compounds. Thickness is one of the most important grape skin morphological characteristics affecting the gas exchange regulation, berry susceptibility to fungal […]
Nov 9, 2020
The crucial step for a successful alcoholic fermentation in wine – Wine Yeast RehydrationWine Yeast Rehydration Proper wine yeast rehydration is necessary because grape must is a very hostile environment with its low acidity, high sugar and osmotic pressure, and nutrients or micronutrients limitations is a big challenge for any yeast to conduct AF. Quality, fault free wine is related to a successful AF, and that comes with taking good care […]
Nov 8, 2020
Maintain oxidative stability of whites during aging.Oxidative Stability In order to maintain oxidative stability of whites during aging is a real challenge. This particular study evaluated the antioxidant activities of soluble extracts of a number of oenological yeast derivatives with increased glutathione (GSH) enrichment. The specific GSH enriched derivatives showed to be on average 3,3 times more efficient in “scavenging” radical […]
May 13, 2020
AN ORIGINAL AND NEW SPECIFIC INACTIVATED YEAST TO IMPROVE THE OXIDATIVE STABILITY OF WHITE AND ROSÉ WINESIn this paper we present research work carried out in collaboration with the University of Burgundy, which has highlighted the impact of a new specific inactivated yeast developed for the protection of musts and wines against oxidation. This results from the application of an optimized production process to a unique strain of Saccharomyces cerevisiae yeast […]
Apr 23, 2020
THE OXYGEN CONSUMPTION RATE OF AN INACTIVE DRY YEAST (IDY) SELECTED TO PROTECT WINE FROM OXIDATIONThe oxygen consumption rate of a specific inactivated yeast, Pure-Lees™ Longevity, (Lallemand) specially selected to protect wine from oxidation thanks to its high capacity for oxygen consumption was calculated using a non-destructive luminescence-based technique in a model solution, to which different concentrations of inactive dry yeast, sulphur dioxide or ascorbic acid were added. Results indicate […]
Apr 23, 2020
USING THE WINE YEAST SACCHAROMYCES CEREVISIAE FOR ACIDITY MANAGEMENT IN WINEIONYSWF™ Adaptive evolution and crossing are powerful non-GMO approaches for selecting yeast strains with properties of interest, making it possible to go beyond classic phenotypes. In the case of IONYS™, these strategies made it possible to obtain a new yeast with a lower yield in terms of the conversion of sugars to ethanol and with […]
Apr 23, 2020
ALCOHOLIC AND MALOLACTIC FERMENTATIONS: WHAT IMPACT ON FRESHNESS?Freshness In the context of climate change, increased pH and alcohol content can result in heavier wines, while some consumers are moving towards a lighter, fresher style of wine. Beyond the notion of acidity, the sensory aspect must also be taken into account (fresh fruit aromas, vegetal notes, etc.). From veraison to bottling, each step […]
Apr 23, 2020
CUSTOM NUTRITION FOR SPECIFIC WINE YEASTS IN SAUVIGNON BLANCSauvignon Blanc In an increasingly competitive market, optimizing the quality of wines, especially the sensory properties, is a major challenge for winemakers. Wine aroma is one of the principal attributes determining wine consumers’ preferences. The importance of nutrients such as nitrogen or lipids in alcoholic fermentation is well known in the wine industry. Indeed, to […]
Apr 23, 2020
UNIQUE SPECIFIC AUTOLYSATE TO HELP WITH PINOT NOIR COLOUR AND TEXTURE MANAGEMENTCOLOUR AND TEXTURE MANAGEMENT Recent research has given us a much better understanding of how yeast and phenolic compounds interact in red wine, enabling us to better characterize the biochemical and biophysical properties of yeast with unique wine-relevant characteristics. We have described the development of a specific yeast autolysate with unique wine sensory impacting properties. […]
Apr 23, 2020
MANAGEMENT OF MALOLACTIC FERMENTATION TO ENHANCE RED WINE COLOR AND REDUCE THE RISK OF BRETTANOMYCES SPOILAGEMALOLACTIC FERMENTATION Malolactic fermentation (MLF) is an integral step in red winemaking, which not only is wine de-acidification, as it will also influence the composition of volatile fermentation-derived compounds with concomitant effects on wine sensory properties and the wine color profile. Long-established winemaking protocols for MLF induction generally involve inoculation of bacteria starter cultures post-alcoholic […]
Apr 23, 2020