Chemonges Aggrey2026-05-262026-05-262024Chemonges, A. (2024). Evaluation of vitamin C content in different varieties of mangoes and oranges grown in Kapchorwa [Undergraduate, Research Report]. Busitema University.https://bdears.busitema.ac.ug/handle/123456789/3909Vitamin C (ascorbic acid, AA) is a water-soluble vitamin essential in human nutrition, an antioxidant, a scavenger of free radicals in biological systems and a co-factor of several enzymes. The purpose of this study was to analyze the vitamin C content from three varieties of mangoes and oranges grown in Kapchorwa. The method used to determine vitamin C content was titration method. The varieties of mangoes used were; alfonso, palmer, keitt and oranges were; novel, washing tunava, and american tungerine. The results of the varieties were as follows; percentage weight of alfonso was 1.03×10-3% of sample, palmer was 0.90×10×-3% of sample and keitt was 0.97×10-3% of sample of vitamin C in mango varieties. This means that alfonso variety had the greatest percentage weight and palmer had the least percentage weight amongst the three mango varieties and this may be due to high degradation of vitamin C during ripening. Also, for orange varieties; novel had a percentage weight of 1.31×10-3% of sample, washing tunava had a percentage weight of 1.19×10-3% of sample, american tungerine had a percentage weight of 1.54×10-3% of sample. Therefore, american tungerine had the greatest percentage weight and washing tunava had the least percentage weight among orange varieties. The above results show that about 55 fruits should be eaten per day and this number is very high as compared to what health experts recommend whereby, they say that about 3-5 fruits should be eaten per day (Hampl, Taylor et al. 2004). All the three varieties of mangoes and oranges were rich in vitamin C and should be eaten when they are just ripening. Alfonso and american tungerine are among the mango and orange varieties that should be eaten to avoid some health problems like; cancer, coronary heart disease among others since they contain much of vitamin C compared to other varieties.en-USThesis