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.