Citric acid declined in the control cheeses and the cheeses with LFC1, with the levels being indistinguishable until 6 months, after which the levels were significantly (p _ 0.05) lower in the cheeses with added LCF1. The amount of lactic acid was significantly (p _ 0.05) higher in the cheeses with added Lb. curvatus LFC1 after 1, 3 and 6 months of ripening in comparison to the levels present in the control cheeses, while after 9 months of ripening the quantities of lactic acid did not differ significantly (Fig. 1).