W. anomalus may produce different KTs with variable molecular mass (8–300 kDa), structural characteristics, pH and temperature optima, and antimicrobial activity range . KTs from W. anomalus and other killer yeasts have been shown to exert a β-1,3-glucanase activity, and may cause damage to the cell wall of susceptible yeasts as a result of degradation of the main β-glucans cell wall components .