Table 3 TPC and total antioxidant activity of the bark extracts of 15 medicinal plants from Bangladesh

Species	TPC (mg GAE/g)	ABTS (IC₅₀, μg/mL)	DPPH (IC₅₀, μg/mL)	FRAP (mM FSE/g)

Albizia odoratissima (L. f.) Benth	369.18±26.47^a	68.84±4.79^a,b,c	181.39±1.91^a	5.62±1.03^a
Araucaria columnaris (J.R. Forst.) Hook	112.38±27.92^d,e	151.49±7.28^g	880.92±14.56^e	1.58±0.70^c,d
Bruguiera sexangula (Lour.) Poir	208.88±34.75^b,c	93.37±5.06^e	231.28±5.89^a,b,c	4.10±0.64^a,b
Dipterocarpus turbinatus Gaertn	203.74±42.48^b,c	63.42±1.59^a	281.40±0.61^c	1.35±0.30^c,d
Engelhardia spicata Lesch. ex Blume	309.50±70.70^a	60.80±4.31^a	192.59±2.42 ^a,b	5.50±0.73^a
Haldina cordifolia (Roxb.) Ridsdale	49.88±6.64^d,e	442.50±14.73^h,i	2711.83±17.98^g	0.21±0.03^d
Saraca declinata Miq	138.66±15.38^c,d	78.22±2.92^c,d	240.12±4.05^a,b,c	2.74±0.81^b,c
Saraca thaipingensis Cantley ex King	125.31±31.03^d	112.72±7.28^f	270.39±4.74^b,c	0.52±0.04^d
Shorea robusta Gaertn	243.08±93.64^a,b	63.78±1.49^a,b	211.87±1.52^a,b,c	3.21±0.30^b
Sonneratia apetala Buch.-Ham	184.52±36.48^b,c	79.33±4.42^d	292.06±18.29^c,d	3.47±0.60^b
Talipariti tiliaceum (L.) Fryxell	54.73±0.98^d,e	432.41±39.83^h	2603.58±85.53^f	1.25±0.74^c,d
Vitex peduncularis Wall. ex Schauer in A. DC	22.20±0.37^e	1625.98±248.27^k	18796.98±408.54^j	0.21±0.09^d
Wrightia arborea (Dennst.) Mabb	17.05±2.44^e	1054.52±46.56^j	16687.88±772.52ⁱ	0.24±0.11^d
Xylocarpus moluccensis (Lam.) M. Roem	357.78±41.41^a	74.57±2.50^b,c,d	344.33±14.33^d	3.52±1.13^b
Zanthoxylum spinosum (L.) Sw	55.24±18.68^d,e	465.64±16.17ⁱ	4042.37±43.29^h	1.52±0.75^c,d

The values are expressed as the means±SD (n = 3).
Different letters in the same column indicated significant difference (p<0.05).