Fruit juice pH Total acidity,
g/L
Ascorbic acid content,
g/100 mL
Total phenolic content mg GAE/mL
Lime 2.79 12.48 ± 0.22 0.645 ± 0.022 0.468 ± 0.019
Lemon 2.81 6.49 ± 0.01 0.616 ± 0.042 0.569 ± 0.031
Grapefruit 4.40 3.2 ± 0.06 0.709 ± 0.014 0.668 ± 0.071
Watermelon 5.94 0.94 ± 0.07 0.0763 ± 0.012 0.246 ± 0.020
Sweet melon 6.77 0.48 ± 0.35 0.270 ± 0.013 0.306 ± 0.021
Pomegranate 4.51 5.16 ± 0.27 0.0587 ± 0.012 0.776 ± 0.092
Values are expressed as mean ± SD, n=3; GAE: watermelon acid equivalent
Table 1: pH, total acidity, ascorbic acid and total phenolic content in the six fruit juices.