Table 2.
Ferric reducing antioxidant power (FRAP) activity and Linoleic acid peroxidation inhibition (LAPI) activity of fish protein hydrolysates prepared from tilapia fish waste under different condition
| Sample | FRAP | LAPI | |||
|---|---|---|---|---|---|
| 20 mg/ml | 30 mg/ml | 40 mg/ml | 50 mg/ml | 40 mg/ml | |
| FHP-0 | 0.70c ± 0.01 | 0.82c ± 0.01 | 1.05c ± 0.02 | 1.30c ± 0.03 | 55.49b ± 1.65 |
| FPH-1 | 0.55b ± 0.03 | 0.71b ± 0.01 | 1.01c ± 0.03 | 1.20c ± 0.02 | 43.57a ± 2.30 |
| FPH-2 | 0.54b ± 0.03 | 0.70b ± 0.01 | 1.06c ± 0.07 | 1.08b ± 0.03 | 43.65a ± 2.86 |
| 50 ppm | 100 ppm | 150 ppm | 200 ppm | ||
| BHA | 0.53b ± 0.02 | 0.65a ± 0.01 | 0.81b ± 0.03 | 1.27c ± 0.04 | – |
| BHT | 0.31a ± 0.01 | 0.60a ± 0.04 | 0.64a ± 0.01 | 0.91a ± 0.03 | – |
| α-Tocopherol | – | – | – | – | 73.51c ± 1.96 |
Different superscript (a, b, c) in the column indicate significant difference (p < 0.05) among the FPH samples and standard antioxidant. Sample was also compared with standard antioxidants. (Duncan’s multiple range test, α = 0.05). Values are expressed as mean ± SE (n = 6)