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Table 1 The antioxidant activity of crude extracts of different parts of black sea cucumber

From: An antioxidant activity of the whole body of Holothuria scabra

Type of extract Concentration (μg/ml) % inhibition Regression equation EC50 (μg/ml)
Crude extract
Whole body 10 18.89 ± 0.09 \( {\text{Y}}\; = \; 1. 3 2 5 5 {\text{X}}\; + \; 5. 3 4 1 \) 33.77 ± 0.24
20 32.08 ± 0.17
30 44.00 ± 0.23
40 58.11 ± 0.17
50 72.00 ± 0.43
Pure compound
Compound 1 5 14.44 ± 0.15 \( {\text{Y}}\; = \; 3. 800 8 {\text{X}}\; - 5. 6 \) 14.63 ± 0.01
10 31.52 ± 0.08
15 50.88 ± 0.74
20 70.00 ± 0.09
25 90.22 ± 0.15
Compound 2 5 9.56 ± 0.15 \( {\text{Y}}\; = \; 4. 1 7 9 6\; - \; 1 1.0 9 4 \) 14.62 ± 0.01
10 30.11 ± 0.08
15 52.56 ± 0
20 73.33 ± 0.26
25 92.44 ± 0.09
Compound 3 5 13.44 ± 0.01 \( {\text{Y}}\; = \; 3. 9 1 2 4 {\text{X}}\; - \; 7. 8 3 6 \) 14.78 ± 0.11
10 29.77 ± 0.23
15 50 ± 0.22
20 69.81 ± 026
25 91.23 ± 0.33
Ascorbic acid 5 2.34 ± 0.09 \( {\text{Y}}\; = \; 4. 80 6 {\text{X}}\; - \; 2 1. 60 2 \) 14.90 ± 7.5E−3
10 25.97 ± 0
15 51.44 ± 0.09
20 74.43 ± 0.09
25 98.26 ± 0.17