DPPH Radical Scavenging assay

Reducing Power

Concentration (mg/mL)

2

4

6

8

10

0.2

0.4

0.6

0.8

1

Standard

24± 1.53

31±1.25

35± 1.72

46± 1.89

55±2.89

0.04±0.003

0.08±0.004

0.11±0.005

0.16±0.004

0.21±0.005

Aqueous extract

22± .36*

25± .97*

33± 0.85*

42± 0.59*

52±1.25*

0.03±0.003

0.06±0.003

0.0944±0.004

0.12±0.005

0.15±0.005

Hexane extract

10± .37

11± .57

16± 0.9

19± 0.45

24±0.64

0.02±0.003*

0.045±0.004*

0.07±0.004*

0.09±0.004*

0.11±0.005*

Ethylacetate extract

15± .76

21± .89

26± 0.67

29± 0.69

33±0.84

0.02±0.002

0.04±0.002

0.06±0.003

0.08±0.002

0.1±0.003

Results are mean ± S.D. of five parallel measurements of different plant extracts
*p < 0.01 statistically significant when compared between the three extracts
Table 1: DPPH radical scavenging activity and Reducing power of the aqueous extract and the organic extracts (hexane and ethylacetate) of Sun Chlorella.
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