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.