Chemical Profiling and Biological Activities on Nepalese Medicinal Plant Extracts and Isolation of Active Fraction of Nyctanthes arbor-tristis

Table 3

DPPH radical scavenging activity as IC₅₀.

Plant extracts	Radical scavenging (IC50) µg/mL
Nyctanthes arbor-tristis	27.38 ± 1.35
Mallotus philippensis (seed cover)	32.08 ± 2.81
Pogostemon benghalensis	32.75 ± 2.13
Litsea monopetala	33.82 ± 1.07
Phoenix humilis	40.14 ± 0.93
Neolamarckia cadamba	50.44 ± 3.75
Equisetum debile	80.14 ± 4.49
Desmostachya bipinnata	81.49 ± 1.59
Spilanthes uliginosa Swartz	93.41 ± 10.04
Mallotus philippensis (seed)	122.98 ± 6.29
Standard ascorbic acid	24.86 ± 4.6

Values are mean ± SD; and vs. the positive control (ascorbic acid).