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Predicting Malolactic FermentationNumerous conditions influence the development and activity of malolactic bacteria in wine. Malolactic fermentation (MLF) that is spontaneously triggered too early or too late can result in loss of wine quality. To learn more about MLF feasability and how to measure it, as recommended by Lallemand, please consult the following link: Download PDF
Sep 17, 2013
Good Practices for Restarting a Stuck FermentationA sluggish or stuck alcoholic fermentation (AF) can be avoided by using good rehydration practices, yeast protection and balanced nutrition. However, certain physical or chemical factors remain uncontrollable and accidents can happen during the winemaking process, resulting in problems for the AF. Please consult our vinification guide on how to restart a stuck fermentation by […]
Sep 16, 2013
GLUTATHIONE AND ITS APPLICATION IN WINEMAKINGThis edition of ‘The Wine Expert’ discusses how Glutathione -rich ‘specific inactivated yeast’ are natural winemaking tools. OptiMUM White is a specific inactivated yeast rich in glutathione that was developed from a new optimized production process that enhances the reduced glutathione availability. OptiMUM White contains the highest level of true active and efficient form (reduced form) of […]
Jul 12, 2013
CO-INOCULATION OF SELECTED WINE BACTERIAThis Winemaking Expert explores the ever increasing practice of co-inoculation. In France and Spain for example, close to 50% of MLF is now done via co-inoculation. The advantages are numerous, such as ensuring a faster more secure process and reducing time for the MLF. Co-inoculation is an important modulator in sensory development, and it helps […]
Jul 12, 2013
ACETALDEHYDE MANAGEMENT DURING WINEMAKINGThe topic of acetaldehyde is very interesting as this compound has SO2 binding properties. The proper choice of wine yeast and bacteria are key factors in determining the final levels of acetaldehyde produced. If SO2 concern is an issue, then choosing a yeast with low final acetaldehyde production such as the Lalvin ICV OKAY® is […]
Jul 12, 2013
Specific Inactivated Yeast enriched in GlutathioneThe utilization of specialty inactivated yeasts (SIY) in winemaking has gained popularity in recent years, and their uses are varied. For example, SIY can be used as protectors during yeast rehydration and as a nutrition tool during fermentation. As we understand more about the yeast cell constituents, the production process, the characterization of each yeast […]
Dec 13, 2012
Balanced nutrition for a healthy alcoholic fermentationNitrogen is an essential nutrient for smooth alcoholic fermentation (AF). Numerous studies have shown that nitrogen has a positive impact on the growth and fermentation activity of yeast (Bell et al. 1979, Ough and Lee 1981, Bezenger and Navarro 1987). Deficiencies in yeast-available nitrogen (YAN) in the must significantly increase the risk of sluggish or […]
Dec 13, 2012
Safe alcoholic fermentation: Providing complete nutrition for the yeastTo protect yeasts when introducing them into must with high risk factors. • Balanced nutrition promotes yeast growth and optimizes the sensory impact of fermentation. • Simply providing ammonia nitrogen and thiamine is not always enough for successful fermentation Lallemand Practical Vinification Guide #3 –
Dec 13, 2012
Sculpting the aromatic profile of wine through diacetyl management In addition to carrying out the bio-deacidification of wine, malolactic (ML) bacteria influence aroma and flavour through various mechanisms, including the production of volatile grape- and yeast derived metabolites. In wine, one of those volatile compounds – diacetyl – has important stylistic implications. This diketone, also known as 2,3-butanedione, is associated with the “buttery” character […]
Dec 12, 2012
Wine Bacteria – contributor to wine stylesThe evidence is stronger than ever. Malolactic bacteria are important tools to influence the sensory profiles of wines. It has been long known that malolactic bacteria (ML) are essential to reduce the acidity of wine through malolactic fermentation. But now, our on-going research is showing their sensory potential as well. Whether a Chardonnay is more […]
Dec 12, 2012