Table 3. Antioxidant activity of calamansi pulp extract
Ethanol concentration (%) | DPPH (μmol TE/g DM) | SEM | FRAP (mmol TE/g DM) | SEM | ORAC (mmol TE/g DM) | SEM | TPC (mg GAE/g DM) | SEM |
Day 3 | Day 6 | Day 3 | Day 6 | Day 3 | Day 6 | Day 3 | Day 6 |
50 | 11.45Ba | 10.94Ba | 0.323 | 0.03 | 0.03 | 0.000 | 0.45Ba | 0.44Ba | 0.011 | 12.11Ba | 11.31Bb | 0.127 |
70 | 12.08Ba | 10.59Bb | 0.276 | 0.03 | 0.03 | 0.000 | 0.44Ba | 0.45Ba | 0.012 | 12.06Ba | 11.92Aa | 0.042 |
90 | 19.00Aa | 13.89Ab | 0.176 | 0.03 | 0.03 | 0.000 | 0.52Ab | 0.56Aa | 0.009 | 12.62Aa | 12.12Ab | 0.069 |
SEM | 0.365 | 0.085 | | 0.000 | 0.000 | | 0.011 | 0.011 | | 0.075 | 0.098 | |
Means within a column with different superscript differ significantly at p<0.05.
Means within a row with different superscript differ significantly at p<0.05.
DPPH, 1,1-diphenyl-2-pricrylhydrazyl; TE, Trolox equivalent; DM, dry matter; FRAP, ferric reducing antioxidant power; ORAC, oxygen radical absorption capacity; TPC, total phenolic content.