Weinhefen
Weinbakterien
Hefenährstoffe und Protektoren
Spezielle Nicht-Aktivierte Hefen
Enzyme
Chitosan
Kompetenz im Weinberg
Selected by INRA Narbonne - France
Spezies
Saccharomyces cerevisiae
Killerfaktor
Sensitiv
Allgemeiner sensorischer Beitrag
Esters
Weißwein
Roséwein
Moste mit hohem Zuckergehalt
Gärstockung beheben
The Primeur-type wines or “nouveaux” wines represent a significant part of the wines produced in the world. Generally they are made from varieties which aromatic potential is weak. At the time of elaboration, it is then advisable to favor the production of fermentative aromas with the yeast, in order to reinforce the fruity aromas. These wines have to also be easy to drink, which involves a light tannic structure for red wines. LALVIN 71 B YSEO yeast has been isolated and selected by the Pr. Maugenet’s team at the INRA Narbonne in this prospect. Its owes its success to its abilities to produce amyl ester (isoamyl acetate), which allows to reinforce the aromatic profile of wines elaborated from neutral varieties. It metabolizes also a part of the malic acid contained in the musts rich in acid, thus diminishing their strong character. Combined with other yeasts it allows, by melting, the composition of the aromatic range the winemaker looks for. Finally LALVIN 71 B YSEO has the property to adsorb a part of the polyphenolic compounds on its cellular wall, thus limiting the tannic structure of primeur red wines.
Gärgeschwindigkeit
Mittel
Glyzerinbildung
Hoch
Lag-Phase
Sehr kurz
Stickstoffbedar
Niedrig
Alkoholtoleranz
14 %
Flüchtige Säure
Mittel
SO₂-Bildung
Niedrig
Maximaltemperatur
30 °C
Minimaltemperatur
15 °C
H₂S 170ppm
Niedrig
H₂S 60ppm
Niedrig
Gabe
Mittel
Bildung von Acetaldehyd
Sehr niedrig