Optimization of Extraction of Compound Flavonoids from Chinese Herbal Medicines Based on Quantification Theory and Evaluation of Their Antioxidant Activity

Table 2

Scheme of L₉ (3⁴) orthogonal experiment.

Test number	Liquid-solid ratio (mL/g)	Extraction temperature (°C)	Extraction duration (min)	Extraction mode
1	25 : 1	65	45	EE
2	25 : 1	70	60	UAE
3	25 : 1	75	75	EAE
4	30 : 1	65	60	EAE
5	30 : 1	70	75	EE
6	30 : 1	75	45	UAE
7	35 : 1	65	75	UAE
8	35 : 1	70	45	EAE
9	35 : 1	75	60	EE