Research Article
Study on the Effect of Deep Eutectic Solvent Liquid Phase Microextraction on Quality Standard, Antitussive, and Expectorant of Sangbaipi Decoction
Table 7
Variance analysis of the Box–Behnken test.
| Variance source | Sum of squares | Degree of freedom | Mean square | F value | value | Significance |
| Model | 0.12 | 9 | 0.013 | 23.10 | 0.0002 | Significant | A | 2.835E − 005 | 1 | 2.835E − 005 | 0.050 | 0.8303 | | B | 6.258E − 004 | 1 | 6.258E − 004 | 1.09 | 0.3306 | | C | 3.103E − 005 | 1 | 3.103E − 005 | 0.054 | 0.8226 | | AB | 7.323E − 003 | 1 | 7.323E − 003 | 12.79 | 0.0090 | | AC | 2.189E − 003 | 1 | 2.189E − 003 | 3.82 | 0.0915 | | BC | 1.904E − 003 | 1 | 1.904E − 003 | 3.32 | 0.1111 | | A2 | 0.066 | 1 | 0.066 | 115.22 | <0.0001 | | B2 | 4.495E − 003 | 1 | 4.495E − 003 | 7.85 | 0.0265 | | C2 | 0.028 | 1 | 0.028 | 48.81 | 0.0002 | | Residual | 4.009E − 003 | 7 | 5.727E − 004 | | | | Lack of fit | 2.714E − 003 | 3 | 9.047E − 004 | 2.79 | 0.1731 | Not significant | Pure error | 1.295E − 003 | 4 | 3.238E − 004 | | | | Cor total | 0.12 | 16 | | | | | R2 | 0.9674 | | | | | | R2Adj | 0.9256 | | | | | |
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