Research Article
Optimization of Bioactive Ingredient Extraction from Chinese Herbal Medicine Glycyrrhiza glabra: A Comparative Study of Three Optimization Models
Table 3
Analysis of variance (ANOVA) for the fitted quadratic polynomial model for optimization of glycyrrhizic acid.
| | Score | Sums
of
squares | Degree
of
freedom | Mean squares | -value | value
(Prob > ) |
| | Model | 17222.01 | 14 | 1230.14 | 18.96 | <0.0001 | | 3410.55 | 1 | 3410.55 | 52.58 | <0.0001 | | 41.19 | 1 | 41.19 | 0.63 | 0.4038 | | 3426.30 | 1 | 3426.30 | 52.82 | <0.0001 | | 3149.21 | 1 | 3149.21 | 48.55 | <0.0001 | | 13.14 | 1 | 13.14 | 0.20 | 0.6591 | | 50.13 | 1 | 50.13 | 0.77 | 0.3932 | | 13.14 | 1 | 13.14 | 0.2 | 0.6591 | | 0.65 | 1 | 0.65 | 0.000 | 0.9217 | | 0.45 | 1 | 0.45 | 0.007 | 0.9348 | | 3180.40 | 1 | 3180.40 | 49.03 | <0.0001 | | 1866.57 | 1 | 1866.57 | 28.77 | <0.0001 | | 2572.45 | 1 | 2572.45 | 39.66 | <0.0001 | | 286.71 | 1 | 286.71 | 4.42 | 0.0528 | | 265.19 | 1 | 265.19 | 4.09 | 0.0614 | | Residual | 973.04 | 15 | 64.87 | | | | Lack of Fit | 958.61 | 10 | 95.86 | 33.23 | 0.0006 |
| | | | Adj- | Pred- | Adeq Precision | | | | 0.9465 | 0.8966 | 0.6954 | 15.413 | |
|
|
Note. is the dimensionless value of the independent variable , and value < 0.05 is statistically significant. |
