Analysis of the Variation of Vitamin C Content in Different Varieties of Passion Fruits from Kabale Central Market
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Date
2021
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Publisher
Kabale University
Abstract
In Uganda, there are three commercially grown passion fruits namely the small purple Grandilla, the Yellow variety
and the Kawanda hybrid. Industries which process passion fruits for juice and people who consume these varieties on
market do not consider nutrient content while making preferences on the variety to use. They make choices basing on
the color of the outer cover of the fruit and availability. This study analyses and the compares the nutrient content of
the three common varieties of passion fruits common in Kabale Central Market. Samples of each of the three
varieties were obtained and juice from each representative sample of the varieties was obtained and collected. The
concentration of Vitamin C was determined quantitatively by iodometric titration. The study found out that the
Yellow variety had high levels of Vitamin C, followed by the Kawanda hybrid, and the small purple Grandilla had
the lowest content. However when the juice of the small purple Grandilla was mixed with that of the other varieties
higher concentrations of Vitamin C were observed, hence mixtures of juice from the varieties can provide generally
high vitamin C contents.
Description
A Research Project Report Submitted to the Faculty of Education Kabale University in Partial Fulfilment of the Requirements for the Award of the Bachelor of Science with Education Degree of Kabale University
Keywords
small purple Grandilla, Yellow variety, Kawanda Hybrid, Vitamin C, Mixtures of juice. Iodometric titration