Lab Report: MEASUREMENT OF VITAMIN C Introduction Nutritional diseases were once the number one cause of death only a century ago‚ but rarely affect our lives today. The complete lack of vitamin C (ascorbic acid) characterized by dark purple spots on the skin and rotting gums‚ a disease called scurvy‚ took the lives of many sailors up until the mid 1800s when the prevention was discovered. Consequently‚ British sailors became referred to as ‘limeys’ because of their daily habit of eating
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1 mole 1 mole 1 mole 1 mole Aim To analyze the Vitamin C from a rival company and compare with that of my company and find out the best value for the money spent by the consumer. Controlled Variable * Mass of the tablet and hereby vitamin C in rival company tablets * Consistency of components in the Vitamin C tablet * Concentration of NaOH Apparatus 1. Burette (50ml) 2. Conical flask (50ml) 3. Vitamin C tablet (1 tablet per one trial) 4. Sodium Hydroxide
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This experiment is conducted in order to investigate which fruit‚ kiwi fruit‚ lemon fruit or orange fruit contain more vitamin C. Section B. Identifying variables 1. Independent variable Numbers of dropper of juice Time for the juice the decolorized 2. Dependent variable The concentration of DCPIP solution 3. Controlled variable The concentration of DCPIP solution The amount of fruit juice The temperature The time that the juice expose to the air Section C. Introduction
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Effect of Heat on Vitamin C Objective: - To determine whether the concentration of Vitamin C in a fruit juice changes upon heating at a constant temperature for different periods of time. - To investigate how the trend goes (whether the concentration of Vitamin C increases or decreases) if the amount of Vitamin C does change. Theory: - Hypothesis: The concentration of Vitamin C in the fruit juice changes and decreases upon heatingat a constant temperature for increasing periods of time
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tamin C‚ ascorbic acid‚ is one of the most important vitamins found in citrus juices‚ including orange juice. Often projects find that orange juices made from frozen concentrated orange juice (FCOJ) have the highest vitamin C levels as compared to freshly squeezed or not-from-concentrate (NFC) juices. This is probably due to the fact that vitamin C degrades over time in fresh and NFC‚ but doesn’t degrade as much in FCOJ due to it being frozen until reconstitution. If one is comparing a NFC product
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Determination of Vitamin C by an Iodometric Titration Purpose: The goal of this lab is to determine the concentration of vitamin C in juices and Real Lemon. A redox titration‚ involving an iodometric method‚ will be used to do the analysis. The samples will be classified by their Vitamin C content. Introduction: Although most mammals can synthesize vitamin C‚ or ascorbic acid (C6H8O6)‚ from sugars‚ man must ingest considerable quantities of this substance. The National Academy of Sciences recommends
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al.‚ 2006) What is vitamin C ? Vitamin C or L-ascorbic acid or L-ascorbate is an essential nutrient for humans and certain other animal species. (Sebastian J. et.al.‚ 2003) Vitamin C is a water-soluble vitamin that is necessary for normal growth and development. It aids in collagen production and reduces fine lines & wrinkles. Collagen loss and disorganisation is part of the process of ageing‚ leading to skin sagging and wrinkle formation. On the other hands‚ vitamin C may include protection
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Why is Vitamin C good for you? Health The most well-known health benefit of blackcurrants is that they contain large amounts of Vitamin C. Vitamins are substances we need to enable our bodies to live‚ grow and reproduce normally. Vitamin C is an essential nutrient - it cannot be made by the human body and we must therefore eat foods which contain it (Bibliography Ref: 13). Because the body breaks down Vitamin C very quickly and does not store very much‚ we need to eat Vitamin C containing foods
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of two students required: * vitamin C indicator solution * three 50 mL beakers or medicine cups * one 10 mL graduated cylinder * three disposable pipettes * one stirring rod * Sources of Vitamin C: freshly squeezed OJ‚ bottled OJ‚ frozen OJ‚ canned OJ * Optional: container for waste solutions and source of clean rinse water There are two different preparations (starch-iodine or indophenol) that may be used for the vitamin C indicator solution. Neither is more
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Vitamin Types Sources Functions Effects of Deficiency RDA Properties C(ascorbic acid) - Blackcurrants Rosehip Strawberries Oranges Lemons Cabbage Tomatoes Potatoes Apples Pears Acts as an antioxidant ‚ prevents heart disease and cancer. Formation of collegen which unites cells as blood vessels‚ helps develop bones and teeth‚ helps white blood cells in fighting infections‚ prevents scurvy‚ necessary for the assimilation of non haem iron in the intestine. Scurvy rare in
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