Biochemical Characterization of Different Chemical Components of Parthenium hysterophorus and Their Therapeutic Potential against HIV-1 RT and Microbial Growth

Table 6

Free radical quenching potential of different extracts of P. hysterophorus prepared at low and high temperatures.

P. hysterophorus	Solvent	IC50 (μg/mL) of extracts
		Low temperature	High temperature
Leaf	Hexane	500	ND
	Ethyl acetate	152	248
	Methanol	154	130
	Aqueous	251	65
Stem	Hexane	ND	ND
	Ethyl acetate	100	450
	Methanol	103	ND
	Aqueous	ND	275
Flower	Hexane	ND	ND
	Ethyl acetate	100	180
	Methanol	100	350
	Aqueous	200	300

^#IC₅₀ is the concentration of plant extract to neutralize the free radicals by 50%. ND: not determined.