Abstract
ABSTRACTDiacetyl and acetaldehyde were determined during ripening of Kefalotyri cheese produced using two different lactic cultures (A: Streptococcus thermophilus + Lactobacillus casei, SI cheese, B: Streptococcus thermophilus + Streptococcus diacetylactis + Streptococcus durans, S2 cheese). Diacetyl increased until the 60th day of ripening (2.49 and 1.62 ppm for S1 and S2 cheese, respectively) and until then was found in higher concentration in trials compared with control (0.91 ppm at 60 days). The possible contribution of lactic acid bacteria, pH and acidity of these cheese on diacetyl during ripening was discussed. Acetaldehyde was detected only until the 15th day of ripening (0.17, 0.20 and 0.08 ppm for control, S1 and S2 cheese, respectively).
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