Table 3.
Biopolymer (% w/v) | Microbial growth (cm) | Sporulation (×107) | Germination | BIa | Classification |
---|---|---|---|---|---|
Control | 1.50 ± 0.18 | 4.12 ± 1.10 | 100 ± 0.00 | -o- | -o- |
Corn starch 1% | 0.90 ± 0.22 | 3.77 ± 0.67 | 105 ± 2.50 | 78.0 | Compatible |
Corn starch 2% | 1.10 ± 0.13 | 3.00 ± 1.20 | 73.0 ± 1.20 | 73.1 | Compatible |
Soy oil 1% | 1.00 ± 0.11 | 3.63 ± 0.92 | 99.0 ± 2.30 | 79.1 | Compatible |
Soy oil 2% | 0.90 ± 0.08 | 4.03 ± 1.40 | 91.0 ± 1.80 | 79.4 | Compatible |
Lignin 1% | 0.10 ± 0.03 | 2.72 ± 0.66 | 77.0 ± 1.90 | 39.2 | Toxic |
Lignin 2% | 0.00 ± 0.03 | 0.77 ± 0.45 | 3.00 ± 0.30 | 8.33 | Toxic |
Humic acid 1% | 1.00 ± 0.23 | 3.37 ± 0.56 | 8.00 ± 0.50 | 67.3 | Compatible |
Humic acid 2% | 1.20 ± 0.19 | 0.15 ± 0.06 | 0.00 ± 0.00 | 38.7 | Toxic |
Biological Index; The BI values for product classification were arranged as follows: (a) BI ≤ 41: Toxic (T); (b) BI ≥ 42 and ≤66: Moderately toxic (MD); and (c) BI > 66: Compatible (C).