Table 2.

Antioxidant activity of A. vera extract and Butylated Hydroxy Toluene (BHT), as a positive control)

Sample	Concentration (µg/ml)	Radical scavenging activity DPPH (µg/ml) (IC50%)
Aloe vera extract	300	15.32
	400	12.98
	500	11.68
	600	12.20
	700	10.12
	800	9.87
	900	6.49
	1000	1.29
Butylated Hydroxy Toluene	10	22
	20	40.09
	25.41	50 (IC50)
	30	55.5
	40	78.3
	50	90.8