. 2014 Nov 5;2014:857982. doi: 10.1155/2014/857982

Table 1.

The total flavonoid contents and antioxidant activity of crude extracts from the leaves of Catalpa plants.

	Total flavonoids mg/g·DW	Reducing power %	DPPH radical scavenging activity IC₅₀ mg/mL	Hydroxyl radical scavenging activity IC₅₀ mg/mL
C. ovata G. Don	29.08 ± 0.157^c	21.65 ± 0.080^c	2.35 ± 0.009^a	0.58 ± 0.011^a
C. fargesii Bur.	32.52 ± 0.102^b	24.05 ± 0.105^b	2.01 ± 0.006^b	0.13 ± 0.001^b
C. bungei C. A. Mey.	40.45 ± 0.143^a	34.10 ± 0.100^a	1.73 ± 0.003^c	0.11 ± 0.001^c

ANOVA. Different letters within each column indicate the statistical difference according to post hoc comparison (Student Newman Keuls) at P < 0.05.