Different levels of butyric acid were seen in the fats
of yogurt samples tested at different time intervals at
4ºC by gas chromatography (Table 1). Fig 3 shows
the calibration curve and the chromatogram obtained
after injecting different yogurt samples into the
system. Compared to the ordinary yogurt samples
which lacked the probiotic starter cultures, the
butyric acid concentrations were higher in probiotic
yogurt samples prepared with ABY1 and 211 starters,
respectively.
The variance analyses related to butyric acid isas listed in Table 2. The differences owing to the
significance of samples, time intervals (days), and
sample into time interval were recorded. The mean
difference between the samples based on Duncan test
considering P < 0.05 is also seen in Table 3 and 4. The
results indicate significant differences in the level of
butyric acid in ordinary and probiotic yogurt samples
tested in the study.