Table 2.
Microbial metabolites of two DDGS before and after fermentation (as-fed basis)
| Item, % | CDDGS | RDDGS | ||
|---|---|---|---|---|
| Unfermented | Fermented | Unfermented | Fermented | |
| Microorganism | ||||
| Lactobacillus plantarum, × 108 CFU/g | ND | 6.70 | ND | 5.30 |
| Bacillus subtilis, × 108 CFU/g | ND | 5.00 | ND | 5.20 |
| Enterobacterium, × 104 CFU/g | 3.63 | ND | 2.68 | ND |
| Mold, × 102 CFU/g | 3.10 | ND | 3.60 | ND |
| Total probiotics, × 108 CFU/g | 11.70 | 10.50 | ||
| Organic acids, mmol/Kg | ||||
| Lactic acid | 21.48 ± 3.77b | 232.10 ± 20.3a | 14.30 ± 1.89b | 115.21 ± 12.1a |
| Formic acid | 9.35 ± 0.79 | 8.68 ± 0.46 | 14.43 ± 1.14b | 22.65 ± 2.97a |
| Acetic acid | 1.59 ± 0.30b | 16.15 ± 2.07a | 17.35 ± 1.63b | 25.27 ± 4.24a |
| Propionic acid | 0.03 ± 0.00b | 0.83 ± 0.11a | 0.03 ± 0.00b | 0.40 ± 0.04a |
| Butyric acid | 33.04 ± 0.53 | 32.90 ± 0.39 | 9.41 ± 0.46 | 10.94 ± 1.40 |
| pH | 6.39 ± 0.04a | 4.21 ± 0.08b | 6.43 ± 0.10a | 4.34 ± 0.16b |
Values are means of three replicates per treatment. Means in a row without common superscript differ significantly (P < 0.05)