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What is the difference in Vitamin C content between orange juice and orange squash?

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What is the difference in Vitamin C content between orange juice and orange squash? Aim: I am conducting this experiment in order to find out the difference in Vitamin C between orange juice and orange squash, both concentration and quantity, using exactly the same amount of each substance every time in order for this experiment to turn out as a fair test. This is essential in this type of experiment. Introduction: Of course, we need a balanced diet in order to remain healthy, consuming a balanced amount of nutrients. One type of nutrient which is very essential is the Vitamins. We need to consume Vitamins in very small amounts, as its effect is very strong. They are absolutely vital for a healthy life. They are present in foods in very small amounts which make them difficult to isolate and identify. Some of the vitamins are; Vitamin A, Vitamin B complex, Vitamin C, Vitamin D, Vitamin E and much more. However, Vitamin C is very essential in our diet. Some foods containing Vitamin C are oranges, lemons, potatoes and cauliflower, and much more. If you have a deficiency in Vitamin C, you could get diseases such as Scurvy, which really affects the blood vessels. Some symptoms of Scurvy are, the gums and skin bleed easily, and you could lose your hair and teeth. This is why it is essential we consume all Vitamins, in order to maintain a healthy life. Prediction: I predict that the orange juice will contain more Vitamin C than the orange squash because I expect that the orange squash has gone through a lot of chemical changes in the factory to be manufactured so it might have lost a particular amount of its Vitamin C concentration during that process in the factories. ...read more.


= 2.4 + 2.8 + 2.6 = 7.8 = 2.6 cm3 3 3 Ascorbic Acid: Average (cm3) = 2.5 + 3.0 + 3.5 = 9.0 = 3.0cm3 3 3 So the average amount of orange juice needed in order to decolourise the DCPIP solution is 0.54 cm3, and the average amount of orange squash needed to decolourise the DCPIP solution is a rather higher 2.6 cm3, and a much higher 3.0 cm3 of ascorbic acid to carry out the decolourisation of the DCPIP solution. The following is the calculation of how much Vitamin C each liquid contains, and which liquid, orange juice or orange squash, has the most Vitamin C: Calculation: The ascorbic acid contains 1mg of ascorbic acid per cm3, so: The orange juice contains = 1 x Volume of ascorbic acid needed Volume of orange juice needed = 1 x 0.3 0.54 = 0.56 mg/cm3 As the ascorbic acid contains 1mg of ascorbic acid per cm3: The orange squash contains = 1x Volume of ascorbic acid needed Volume of orange squash needed = 1 x 0.3 2.6 =0.12 mg/cm3 The results show that the orange juice contains 0.56 mg/cm3 of Vitamin C, whilst the orange squash contains a far less 0.12 mg/cm3 of Vitamin C, in fact, 0.44 mg/cm3 of Vitamin C less than the orange juice. This result has proved my prediction to be correct, and shows that this experiment actually was a fair and accurate one. On the following page is a bar graph to show these results, and to show how much more orange juice has in Vitamin C than orange squash, and to explain the findings in a more detailed manner, ...read more.


The warnings were very useful, and it was this that really took a great part of the success of this experiment. However, there are some ways in order to improve this very experiment, even though everything worked out to be fine. Maybe, it would have been a good idea to not allow the liquid to be open to air, as this could cause Vitamin C content to be lost, although not very much, but maximum accuracy is a priority for this experiment. Also, it would be a good idea to try to obtain pure orange juice and orange squash, rather than from companies, as the orange squash was produced by the company, 'Robinsons'. Maybe in the process of making the orange squash, some Vitamin C content was lost, and so would not make this experiment to be fair, and the same for the orange juice used in the experiment. Another way to improve the experiment is for the juices not to be shaked, as this would also decrease the Vitamin C content in this experiment, leading to inaccurate and unfair results. However, this experiment was a rather casual one, not a detailed scientific experiment, so these improvements would not really matter in a classroom experiment like this. But apart from these possible future improvements, the experiment turned out rather well, with accurate and suitable results, everything conducted to this experiment, nothing altered such as the liquid quantity, and the same size syringes, test tubes and beakers were used, making this experiment an accurate, fair, logical and a rather successful experiment. ?? ?? ?? ?? 9B Tofeek Jumaily 19/02/07 1 ...read more.

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