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Statistics Ia - Comparing Vitamin C of an Apple Versus an Orange

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Submitted By Cazmir
Words 2374
Pages 10
Cazmir Leenheer

Biology

09-08-’11

Grade11 IB Internal Assessment: Comparing Vitamin C of an Apple versus an Orange

Cazmir Leenheer

Biology

09-08-’11

Research Question: Is freshly squeezed apple (Malus domestica) juice or orange (Citrus sinensis) juice a richer and therefore healthier source of vitamin C (Ascorbic acid)? Aim: To measure the vitamin C content of 20 apples and 20 oranges and subsequently using a statistical Mann-Witney U test accordingly, concluding which fruit contains a richer source of vitamin C. Background Information: As the aim of this lab experiment is to establish whether raw apple juice is richer in vitamin C compared to raw orange juice and vice versa, the collected results will suggest which intake is the healthier option and how much of it you will need to sustain your optimal Vitamin C levels. Vitamin C is a essential nutrient needed for the growth and repair of tissues in all parts of your body. Vitamin C is also one of the key antioxidants, which are nutrients that block part of the damage caused by free radicals. Free radicals are made when your body breaks down food or when a person is exposed to factors such as tobacco, smoke and radiation. Furthermore, a sufficient vitamin C level within the body can prevent the development of health conditions such as cancer, heart diseases, strokes and high blood pressure (Henrik, 2008). Raw citrus fruits are best known to be good sources of vitamin C, however others also include broccoli, guava, papaya and red/green chili peppers. Vitamin C is sensitive to heat, light and oxygen which can break it down. Therefore the get the most vitamin C out of fruits, it has to be freshly squeezed or consumed raw. Because the body is not able to produce vitamin C by itself, nor store vitamin C intake, it is crucial to eat vitamin C rich foods or supplements. In reality it would be expected

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