Rapid Identification of Aldose Reductase Inhibitory Compounds from Perilla frutescens

Table 1

Inhibitory effects of the crude extracts and fractions of P. frutescens on rAR.

Sample	IC50 (μg/mL)^a
MeOH extract	9.34
𝑛-Hexane fr.	—
CH2Cl2 fr.	9.06
EtOAc fr.	1.92
𝑛-Butanol fr.	2.89
Water fr.	—
Quercetin^b	0.77

aThe IC₅₀ value was defined as the concentration at 50% inhibition.
^bQuercetin, positive control.