Optimization of Bioactive Ingredient Extraction from Chinese Herbal Medicine Glycyrrhiza glabra: A Comparative Study of Three Optimization Models

Table 2

Central composite design matrix and the experimental results for glycyrrhizic acid extraction from Glycyrrhiza glabra.

Run

A

B

C

D

Content of; glycyrrhizic acid; (mg)

Note. is the dimensionless value of the independent variable i.