In vitro determination of the anti-aging potential of four southern African medicinal plants

Table 3 Antioxidant activity of tested extracts

Plant name	Plant part	Extract type	IC₅₀/(μg/mL)*
Clerodendrum glabrum	Roots	MeOH	21.1 ± 1.72
	Roots	EtOAc	17.8 ± 6.47
	Stems	MeOH	17.0 ± 1.96
	Stems	EtOAc	9.90 ± 3.27
	Bark	MeOH	10.8 ± 0.99
	Bark	EtOAc	ng
	Fruits	MeOH	35.5 ± 4.01
	Fruits	EtOAc	63.9 ± 5.03
Peltophorum africanum	Leaves	MeOH	5.3 ± 0.72
	Leaves	EtOAc	9.2 ± 0.76
	Seeds	MeOH	7.16 ± 0.93
	Seeds	EtOAc	11.4 ± 2.48
	Bark	MeOH	4.9 ± 0.47
	Bark	EtOAc	2.0 ± 0.23
	Stems	MeOH	4.5 ± 0.38
	Stems	EtOAc	2.1 ± 0.17
Psychotria capensis	Stems	MeOH	11.3 ± 1.90
	Stems	EtOAc	52.0 ± 15.30
	Roots	MeOH	9.6 ± 0.73
	Roots	EtOAc	9.5 ± 1.06
	Leaves	MeOH	68.3 ± 8.87
	Leaves	EtOAc	62.3 ± 6.00
	Seeds	MeOH	25.8 ± 2.72
	Seeds	EtOAc	23.9 ± 4.57
Schotia brachypetala	Bark	MeOH	2.8 ± 0.31
	Bark	EtOAc	7.7 ± 0.55
	Leaves	MeOH	7.8 ± 0.63
	Leaves	EtOAc	50.3 ± 9.33
Trolox	N/A	N/A	2.84 ± 0.52

*Results are given as IC₅₀ ± SD ng = extracts had negligible antioxidant activity.

ISSN: 2662-7671