Table 6. Diacetyl content (mg/L) of drinking yogurt samples during cold storage (mean±SD)

Sample First day 11th day 21th day
C 0.44±0.08Cb 0.50±0.08Bb 0.71±0.08Ab
FE250 0.63±0.08Ca 0.66±0.08Bab 0.93±0.06Aa
FE500 0.61±0.11Ca 0.72±0.11Ba 0.91±0.08Aa
IE250 0.63±0.09Ca 0.65±0.08Bab 0.90±0.09Aa
IE500 0.60±0.12Ca 0.73±0.08Ba 0.91±0.07Aa
Values in the same column shown with similar lowercase letters are not significantly different.
Values in the same rows shown with similar capital letters are not significantly different.