Table 2. The content of organic acid in commercial yogurt

Yogurt Organic acids (mg/g)
Citric acid Lactic acid Acetic acid Malic acid Formic acid
FM-11) 0.74±0.01i2) 6.98±0.02h 0.22±0.02cd ND3) ND
FM-2 0.71±0.12ij 5.20±0.05k 0.20±0.00de ND ND
FM-3 0.66±0.03ij 6.56±0.39i 0.24±0.02bc ND ND
FM-4 0.97±0.06h 5.81±0.07j 0.16±0.03fg ND ND
FM-5 0.62±0.00j 6.45±0.05i 0.33±0.02a ND ND
FM-6 1.57±0.02fg 5.11±0.07k 0.25±0.01b ND ND
FM-7 0.61±0.02j 6.36±0.06i 0.24±0.01bc ND ND
FM-8 0.44±0.04k 9.07±0.16e 0.32±0.01a ND ND
Mean±SD 0.79±0.35 6.44±1.25 0.24±0.06 ND ND
CFM-11) 1.56±0.05fg 8.01±0.05f 0.11±0.01h 0.33±0.07a ND
CFM-2 2.54±0.01ab 12.95±0.05a 0.31±0.00a ND 0.06±0.00a
CFM-3 1.72±0.01e 9.04±0.10e 0.18±0.00ef ND 0.06±0.00a
CFM-4 1.63±0.06ef 9.69±0.01d ND ND 0.06±0.01a
CFM-5 1.52±0.00g 9.95±0.08c ND ND ND
CFM-6 1.82±0.00d 7.31±0.05g 0.23±0.01bc ND ND
CFM-7 2.47±0.05b 8.99±0.05e 0.18±0.01ef 0.13±0.05b 0.06±0.00a
CFM-8 2.10±0.04c 8.06±0.08f 0.15±0.01g 0.21±0.00ab ND
CFM-9 2.61±0.01a 11.01±0.16b 0.26±0.01b ND ND
Mean±SD 2.00±0.44 9.44±1.73 0.20±0.07 0.22±0.10 0.06±0.00
1)FM, fermented milk; CFM, condensed fermented milk.
2)a-kMeans with the different superscripts in the same column are significantly different by Duncan’s multiple range test at p<0.05.
3)ND, not detected.