Enrichment of the Glycyrrhizic Acid from Licorice Roots (Glycyrrhiza glabra L.) by Isoelectric Focused Adsorptive Bubble Chromatography

Table 3

Enrichment ratios and start, foam, and residual extract concentrations (mg/mL) of Glycyrrhiza glabra with β-lactoglobulin, albumin bovine, and starch (soluble) preferred as foaming agents and without additive.

Experiment number	Foaming agent method (mg)	Initial concentration; (μg/mL)	Foam concentration (μg/mL)	Enrichment ratio (ER)
	β-Lactoglobulin	12 ± 0.986	4420 ± 183.43	368.3
	Albumin bovine	24 ± 1.982	2170 ± 90.055	90.4
	Starch (soluble)	348 ± 29.884	3260 ± 135.29	9.4
	Without additive	360 ± 33.88	2100 ± 87.15	5.9