Table 1.
Yield of licorice extract according to ethanol content in extract solvent.

Ethanol content in extract solvent(%) Solid yield in extract(%)a Glycyrrhizin(g/L) Glycyrrhetic acid(g/L)
0 23.9 5.10 0.001
20 24.5 6.51 0.006
40 23.9 6.91 0.019
50 24.2 7.42 0.046
60 23.7 6.95 0.027
70 22.6 6.48 0.024
80 17.7 4.53 0.019
95 5.9 0.37 0.000
Solid yield (%) = total weight of solid in extract (g) / weight of licorice used for extraction (g) × 100