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. 2012 Nov 21;7(11):e49493. doi: 10.1371/journal.pone.0049493

Table 2. IC50 values obtained for the selected flavonoids.

IC50 value1 (µM)
Apigenin K 196
Rhoifolin (apigenin 7-O-glycoside) 183
Kaempferol 178
Rutin (quercetin 3-O-glycoside) 64
Quercetin 43
Luteolin 23
1

The IC50 value represents the concentration of each compound that inhibits ACE activity by 50%.