TABLE 1.
Intrinsic parameters of the waste streams sampled in periods 1 and 2
| Intrinsic parametersa,b |
||||
|---|---|---|---|---|
| Waste stream | pH (−) |
Water activity (aw) (−) | Moisture content (%) | |
| Period 1 | Period 2 | Period 2 | Period 2 | |
| Chicken manure | 8.86 ± 0.14 B,h | 8.40 ± 0.13 A,f | 0.98 ± 0.01 c | 37.6 ± 0.9 b |
| Vegetable auction overproduction | 5.07 ± 0.02 B,e | 4.85 ± 0.02 A,c | 0.98 ± 0.00 c | 88.5 ± 0.3 f |
| Corn meal | 6.19 ± 0.02 B,g | 5.95 ± 0.01 A,d | 0.73 ± 0.00 b | 13.4 ± 0.7 a |
| Grain mix | 5.91 ± 0.06 A,g | 6.43 ± 0.05 B,e | 0.69 ± 0.00 a | 13.9 ± 1.1 a |
| Apple pulp | 3.76 ± 0.01 A,a | 4.33 ± 0.05 B,b | 0.98 ± 0.00 c | 71.2 ± 0.5 c |
| Fruit puree | 3.89 ± 0.02 A,a,b | 3.87 ± 0.02 A,a | 0.98 ± 0.00 c | 94.9 ± 0.1 g |
| Catering/supermarket/industrial food waste | 4.17 ± 0.01 A,b,c | 4.30 ± 0.05 A,b | 0.97 ± 0.00 c | 77.6 ± 0.8 e |
| Household food waste | 4.51 ± 0.02 B,d | 4.36 ± 0.05 A,b | 0.97 ± 0.00 c | 75.3 ± 0.8 d |
| Strawberry leavesc | 5.43 ± 0.29 f | ND | ND | ND |
| Tomato leavesc | 4.32 ± 0.06 c,d | ND | ND | ND |
a
Results are presented as the mean of three replicates ± standard deviation. Mean pH from different sampling periods of the same waste stream that share a capital letter (A, B) within the same row are not statistically different (P ≥ 0.05). Mean intrinsic parameters for waste streams that share a lowercase letter (a to h) within the same column are not statistically different (P ≥ 0.05).
b
ND, not determined.
c
For strawberry leaves and tomato leaves, only data for sampling period 1 were obtained.