Table 1 Chemical composition and microbial populations of wet brewery spent grain
Nutrients | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|
Dry matter | 23.36 | 24.15 | 21–28 | 24.1 | 25.75 | 22.6 | 24.27 | 24.2 |
Crude protein | 32.57 | 27.35 | 26.5–37 | 28.6 | 27.80 | 32.1 | 22.48 | 26.5 |
Neutral detergent fiber | 45.47 | – | 42.9–61 | 53.7 | 62.91 | 43.5 | 26.4 | 63 |
Acid detergent fiber | 21.20 | – | 26–32 | 28 | 20.5 | 22.5 | 12.1 | 25.2 |
Acid detergent lignin | – | – | – | – | – | – | 6.66 | |
Microbial population (log10cfu g−1 FW) | ||||||||
Lactic acid bacteria | 4.57 | – | – | 4.97 | – | – | 4.57 | – |
Aerobic bacteria | – | – | 6.61 | 4.62 | – | |||
Yeast | 7.53 | – | – | 7.13 | 3.79 | 8.05 | 4.69 | 4.24 |
Mold | 5.23 | – | – | – | – | 7.33 | – | 4.08 |
Clostridia | 1.6 | – | – | – | – | – | – | – |