المجلة الدولية للعلوم والتقنية

The aim of this study was to estimate the concentration of vitamin C for some orange and lemon varieties in the city of Al-Khums. The study was included samples of oranges and lemon ( sour orange, sweet orange, mandarin orange, navel orange, blood orange, aurantium orange and lemon). Vitamin C was evaluated in orange and lemon samples after collection from the markets of the city and its timing, filtration and titration with iodine solution directly. The concentration of vitamin C was found to vary by samples. The Concentration in each sample was measure in mg / 100ml. The results of this study showed that the concentration of the vitamin C in the lemon was 66.75, in the aurantium orange was 52.09, in the blood orange was 105.45, in the sour orange was 94.05, in the sweet orange was 109.90, in the reticulate orange was 62.08, and in the navel orange was 120.64 mg/100ml. The highest concentration of vitamin C was in the navel orange whereas the lowest concentration was in the aurantium orange.