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. 2017 Jun 8;7(2):134. doi: 10.1007/s13205-017-0786-6

Table 4.

Antioxidant activity of phenolics acids and flavonoids identified in the cyanobacterial extracts

Polyphenolics Antioxidant activity
DPPH activity (IC50) (µg ml−1) ABTS activity (IC50) (µg ml−1) Deoxyribose protection activity (IC50) (µg ml−1)
Gallic acid 3.53 ± 0.24 8.85 ± 0.74 7.84 ± 0.72
Chlorogenic acid 6.41 ± 0.61 13.15 ± 0.71 8.53 ± 0.62
Caeffic acid 6.34 ± 0.37 18.04 ± 0.68 4.76 ± 0.67
Vanillic acid 416.7 ± 6.2 132.1 ± 3.4 91.1 ± 5.2
Ferulic acid 11.75 ± 0.75 9.47 ± 0.69 4.51 ± 0.37
Rutin 6.55 ± 0.54 13.78 ± 0.93 7.58 ± 0.66
Quercetin 4.71 ± 0.49 10.63 ± 0.83 20.1 ± 0.84
Kaempferol 17.30 ± 1.3 8.54 ± 0.6 7.17 ± 0.46
BHT 12.41 ± 1.6 16.12 ± 1.3 6.1 ± 0.45
α-Tocoferol 10.87 ± 1.2 32.41 ± 1.7 8.37 ± 0.72

Values represent average ± standard deviation for three replications