Research Article

A Green and Efficient Method for the Preconcentration and Determination of Gallic Acid, Bergenin, Quercitrin, and Embelin from Ardisia japonica Using Nononic Surfactant Genapol X-080 as the Extraction Solvent

Figure 5

Effect of water-bath time (a) and pH of cloud point extraction (b) on the extraction effect of 4 components. 1, gallic acid; 2, bergenin; 3, quercitrin; 4, embelin.
(a)
(b)