Table 2. Orthogonal experimental design of different factor levels (values 1-4): the experimental results for factors A, B, C with the measured Tartary buckwheat+L. plantarum TK9.
| Experiment no. |
Water ratio (A) |
Inoculum size (B) | Time (C) | N(viable count)*/ (CFU/g) |
|---|---|---|---|---|
| 1 | 1 | 1 | 1 | 1.86·109 |
| 2 | 1 | 2 | 2 | 2.26·109 |
| 3 | 1 | 3 | 3 | 1.95·109 |
| 4 | 1 | 4 | 4 | 1.67·109 |
| 5 | 2 | 1 | 2 | 2.00·109 |
| 6 | 2 | 2 | 1 | 2.17·109 |
| 7 | 2 | 3 | 4 | 1.72·109 |
| 8 | 2 | 4 | 3 | 1.67·109 |
| 9 | 3 | 1 | 3 | 1.76·109 |
| 10 | 3 | 2 | 4 | 1.60·109 |
| 11 | 3 | 3 | 1 | 1.72·109 |
| 12 | 3 | 4 | 2 | 1.89·109 |
| 13 | 4 | 1 | 4 | 1.46·109 |
| 14 | 4 | 2 | 3 | 1.85·109 |
| 15 | 4 | 3 | 2 | 1.62·109 |
| 16 | 4 | 4 | 1 | 1.43·109 |
| K1 | 7.74 | 7.08 | 7.18 | |
| K2 | 7.56 | 7.88 | 7.77 | |
| K3 | 6.97 | 7.01 | 7.23 | |
| K4 | 6.36 | 6.66 | 6.45 | |
| k1 | 1.935 | 1.77 | 1.795 | |
| k2 | 1.89 | 1.97 | 1.9425 | A>C>B |
| k3 | 1.7425 | 1.7525 | 1.8075 | |
| k4 | 1.59 | 1.665 | 1.6125 |
*Each value in the table represents the mean of N=3, Ki=the sum of the corresponding test results when the level factor is i for any factor, ki= Ki/4 (4 is the number of levels)