What is a yeast killer factor?
Killer yeast contain a toxin in their cell wall structure that allows them to kill toxin sensitive foreign yeast cells. Most killer strains of S. cerevisiae have good fermentation kinetics and, therefore, have a greater chance of dominating the fermentation. If indigenous yeast is perceived as a potential problem, strains with this factor may be beneficial. Our various yeast strains can exhibit, be sensitive to or have a neutral reaction to this factor.
