This nutrient also keeps cholesterol in the bloodstream from oxidizing, another early step in the progression towards heart disease and stroke. If you know the concentration of the DCPIP the school technicians should be able to tell youyou can work backwards using the titration calculation to find out the concentration of vitamin C in the juice.
When the first drop of DCPIP is added to the fruit juice, the initial blue colour should quickly disappear — as a consequence of the reaction between any ascorbic acid present Biology coursework vitamin c the DCPIP.
It can help regulate blood sugar level.
The mixture is shaked gently after the addition of each drop of the commercial orange juice. Collagen is an essential component of connective tissue, which plays a vital role in wound healing.
Vitamin C is also involved in protein metabolism. Supplements vitamin C can force it into body cells, where it can protect against many complications of diabetes.
If this does not happen then the ascorbic acid concentration is very low or even zero and a larger volume of fruit juice may be needed in the test tube, because the measurement of the volume fruit juice needed to decolourise DCPIP need to record in a table.
Diabetes also can benefit from extra vitamin C. Vitamin C is also an important physiological antioxidant and has been shown to regenerate other antioxidants within the body, including vitamin E. Salters-Nuffield All of the examples used in this coursework guide have been made anonymous and Ocr salters chemistry coursework mark scheme-Ocr Salters Doc Brown x27;s ocr salters chemistry coursework a2 example Chemistry Qualitative Methods of Analysis Revision Notes.
F Chemistry Individual Investigation. Ongoing research is examining whether vitamin C, by limiting the damaging effects of free radicals through its antioxidant activity, might help prevent or delay the development of certain cancers protect cell and DNA from damage and mutation ,and cardiovascular disease.
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Measure out a known quantity of DCPIP into a conical flask and stand this under the burette on a white tile this is so that you can see any colour change easily.
This advanced level chemistry course, developed at the Science Education Group in the University of York, offers an exciting, context based approach to studying chemistry.
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High blood pressure may also improve in the presence of this wonder vitamin. For freshly squeezed fruit juice we used orange and lemon, same with commercial. Guidance for Internally Assessed Units.
The end point is a pink color that persists for 10 seconds or more. Vitamin C therefore aids the body in the efficient use of folic acid and iron.Apr 30, · This is a simple explanation of the estimation of Vitamin C concentration in fruits or vegetable extracts.
The presentation is rather slow as I am still gett. Owing to the increasing concern for one's health since the last century, vitamin C tablets become the most popular supplyment to normal diets. In this experiment, the vitamin C content of a commercial tablet is determinded and compared with the maunfacturers' specification.
Vitamin C is water-soluble and is an enantiomer of ascorbic acid. The Vitamin C Content of Fruit Juice. Introduction Vitamin C, also known as ascorbic acid, is an essential nutrient for humans and other animal species.
It needs to be present in the body, and it acts as an anti-oxidant, protecting the body from oxidative stress/5(5). Test for Vitamin C - titration. Quick revise. Place the fruit juice you are examining in the burette and ensure the meniscus of the fruit juice is on a measurement.
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To ensure a sufficient intake of vitamin C some people take vitamin supplements. Vitamin C has the formula C 6 H 8 O 6 and can be oxidised to form C 6 H 6 O 6. The amount of vitamin C present in a vitamin tablet can therefore be determined by titrating a known amount of the tablet with an oxidising agent.Download