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Individual Investigation Hypothesis: Fresh orange juice has a higher vitamin C content than orange juice made from concentrate. Background Concentration, in biochemistry terms, is "increasing the strength or proportion of (a substance or solution) by removing or reducing the water or any other diluting agent or by selective accumulation of atoms or molecules." (Oxford English Dictionary). Therefore concentrated fruit juice has had its water removed (probably for ease of transportation) then had water re-added (reconstituted) before packaging. Vitamin C is an important part of the human diet. It is found in fruits, green vegetables and potatoes, and is "necessary for the formation of blood and bone and for resistance to infection." (Ramsden, 1995). It is an antioxidant which is capable of counteracting the damaging effects of oxidation. Vitamin C helps to prevent deficiency diseases, in particular scurvy, and is abundant in citrus fruits such as lemons, limes and oranges. Its chemical name,...

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