Additionally, ultrasonication or prolonged thermal treatment were applied before fermentation.  The LUHS245 strain showed better preservation properties in the case of fungal inhibition; however, prolonged thermal treatment and/or ultrasound pre-treatment ensure safer fermentation.  The lowest sum of BA was found in thermally pre-treated and fermented R. caperata, while the highest was in ultrasonicated and fermented B. edulis. 
THERM