Vitamin C Essays & Research Papers

Best Vitamin C Essays

  • Vitamin C - 2742 Words
    E20-1 Experiment 20 Consumer Chemistry: Vitamin C in Fruit Juices The Task The goal of this experiment is to determine the concentration of vitamin C in a range of different fruit juices (fresh and preserved) using titration and to rank these sources of vitamin C. Skills At the end of the laboratory session you should be able to: * use a pipette correctly, * use a pipette filler safely, * manipulate a burette and carry out a quantitative titration properly, * weigh a...
    2,742 Words | 8 Pages
  • Vitamin C - 659 Words
    Research Question: How the amount of vitamin C in fruit juices affects its freshness and till what extent is the information provided on the pack by manufacturers is reliable? Background Information: Hypothesis: -fresh juices have more vitamin C than long-life -juice that is ‘not from concentrate’ is best in terms of vitamin content -if heat destroys vitamin C then heat-treated long-life juices will have lower concentrations -if heat destroys vitamin C then boiled fruit juice will...
    659 Words | 3 Pages
  • Vitamin C - 1052 Words
    Vitamin C –A Natural Antioxidant Concept: Vitamin C (ascorbic acid) is an antioxidant. The amount of vitamin C content in food can be found out by titrating with an oxidising agent, e.g. iodine. In the reaction, vitamin C is oxidised, while iodine is reduced to iodide ions. The endpoint is determined by the formation of blue-black starch-iodine complex when all vitamin C is oxidised and excess iodine is free to react with the starch solution added as indicator. Introduction Vitamin C is an...
    1,052 Words | 4 Pages
  • Vitamin C - 744 Words
    Chapter 1 Introduction A person needs a daily intake of Vitamin C to stay healthy; therefore, one should be aware of what fruits he/she should ingest daily or more days to obtain stronger stamina and the abundance of antioxidants in the body to reverse oxidation. Vitamin C or L-ascorbic acid is essential for normal growth of humans and it helps in the repair and reconstruction of body tissues lost over time. It is an antioxidant that blocks the damage caused by free radicals. People who...
    744 Words | 3 Pages
  • All Vitamin C Essays

  • Vitamin C - 3356 Words
    An experiment to investigate the enzyme concentration and rate of reaction Background To carry out our experiment we used 3 different types of orange juices, and we also used 0.1% of vitamin C solution. The aim of our experiment was to see how much DCPIP was needed to be added to make the orange juices turn back to the orange colour and the DCPIP to decolourise once the 0.1% of vitamin C was added. DCPIP is a blue dye in its non-reduced form; it becomes colourless when it gains electrons....
    3,356 Words | 9 Pages
  • Vitamin C - 1434 Words
    Title: Analysis of the differences of percentage of vitamin C (ascorbic acid ) between the fresh orange juice and artificial orange juice (Sunkist). Problem statement : Does have different types of fruit juice contain similar amount of vitamin c ? Objevtive: To analyse the concentration and percentage of different food sample by using titration method and state whether the percentage and concentration of vitamin C. Methodology: Theory : DCPIP can also be used as an indicator...
    1,434 Words | 5 Pages
  • Vitamin C - 971 Words
    Does the amount of Vitamin C on the label of commercially available tablet exaggerate the amount of Vitamin C? The aim of this experiment is to determine whether manufacturers of commercially available Vitamin c tablets exaggerate the amount of vitamin C Abstract: The purpose of this experiment was to test Vitamin C in commercially available Vitamin C tablets. It was discovered that the percentage Vitamin C content was lower than what was stated on the label. This, however, could be due...
    971 Words | 5 Pages
  • vITAMIN c - 1420 Words
    11/10/2014 experiment 1 Analysis of Commercial Vitamin C Tablets Objective To employ titration technique to determine the content of vitamin C in commercial tablets using volumetric analysis and compare it with the manufacturers' specifications. Introduction Deficiency of essential antioxidant Vitamin C in human will lead to scurvy. In this experiment, the vitamin C content of commercial tablets is determined and then compared with the manufacturers' specifications. Vitamin C,...
    1,420 Words | 7 Pages
  • Vitamin C - 2015 Words
    Estimating the Vitamin C Concentration in Fruit Juices: A Redox Titration Prelab Assignment – Please turn your answers in on GaView prior to lab 1. How will you prepare a .02% (m/v) NBS solution? Calculations should be in your notebook before arriving to lab. 2. Provide the structure of vitamin C in its reduced form (ascorbic acid), its ionized form (ascorbate ion- this is at equilibrium with reduced form when dissolved), and its oxidized form (dehydroascorbate). 3. Why do you...
    2,015 Words | 8 Pages
  • vitamin C lab report
    Measuring the Vitamin C content in a variety of fruit juices Background Information Vitamin C, also called ascorbic acid, is a water soluble vitamin. It is a powerful reducing agent that is able to decolourise blue DCPIP (2.6-dichlorophenol indophenols). The decolourisation of DCPIP can therefore be used to calculate the vitamin C content of a variety of fruit juices. Research Question – To determine how the content of Vitamin C (%) will differ in fresh fruits (orange, mango, lemon, lime,...
    1,764 Words | 9 Pages
  • Vitamin C and Scurvy - 425 Words
    Scurvy (N.Lat. scorbutus) is a deficiency disease that results from insufficient intake of vitamin C, which is required for correct collagen synthesis in humans. The scientific name of vitamin C, ascorbic acid, is derived from the Latin name of scurvy, scorbutus. Scurvy leads to the formation of liver spots on the skin, spongy gums, and bleeding from all mucous membranes. The spots are most abundant on the thighs and legs, and a person with the ailment looks pale, feels depressed, and is...
    425 Words | 2 Pages
  • Orange and Vitamin C Solution
    Determination of the concentration of vitamin C in fruits/vegetables by using the DCPIP test (2008) Principle : Vitamin C is a strong reducing agent. It can decolorize the blue dye DCPIP. The amount of vitamin C in a food sample can be estimated by the amount of it that is used to decolorize a fixed amount of DCPIP. Apparatus : Test tube, clean and dry Test tube rack 5 ml syringe or a good quality squeezing pipette 1 ml pipette...
    464 Words | 3 Pages
  • How Is Vitamin C Manufactured
    How is Vitamin C manufactured? Ascorbic Acid Also known as: l-ascorbic acid, vitamin C, ascorbate A six carbon compound related to glucose. It is found naturally in citrus fruits and many vegetables. Ascorbic acid is an essential nutrient in human diets, and necessary to maintain connective tissue and bone. Its biologically active form, vitamin C, functions as a reducing agent and coenzyme in several metabolic pathways. Vitamin C is considered an antioxidant....
    1,901 Words | 6 Pages
  • Effect of Heat on Vitamin C
    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...
    296 Words | 1 Page
  • Measurement of Vitamin C - 981 Words
    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...
    981 Words | 4 Pages
  • Cooking in Vitamin C Content
    Sample: Microwave DCPIP 0.05% used mass of the green peppers (samples): 13.78g Titration 1 Titration 2 Titration 3 average 3.3 (cm3) 3.4(cm3) 3.2(cm3) 3.3(cm3) Sample: steamed DCPIP 0.005% used mass of the green peppers (samples): 12.41g Titration 1 Titration 2 Titration 3 average 11.6(cm3) 11.7(cm3) 11.6(cm3) 11.63(cm3) Sample: boiled DCPIP 0.005% used Mass of the green peppers (samples): 14.30g Titration 1 Titration 2 Titration 3 average 3.6(cm3) 3.8(cm3) 3.8(cm3) 3.73(cm3)...
    765 Words | 3 Pages
  • Benefits of Vitamin C - 672 Words
    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...
    672 Words | 3 Pages
  • Vitamin C Content of a Lemon
    INTRODUCTION In our experiment we tested the amount of vitamin C in a certain amount of lemon juice. We did this with the help of PCPIP which is an indicator that shows the presence if C vitamin. For this we used the mentioned indicator, pipette, three eprouvetes, 0.1% of C vitamin solution and lemon juice. First we had to get the volume of 0.1% vitamin C solution that is needed for our amount of PCPIP (2ml) to decolorize. Then we had to determine the volume of lemon juice that is needed...
    472 Words | 3 Pages
  • Biology Vitamin C - 2041 Words
    Investigating the vitamin C content of fruits and fruit juice Aim: In this investigation, I aim to measure and compare whether there is a higher content of vitamin C in a fruit or a juice by measuring the volume of the sample required to decolourise a solution of dichlorophenolindophenol (DCPIP). Introduction: For this experiment, I aim to investigate and compare the content of vitamin C in the fruit against the fruit juice. The theory of this method is a titration with...
    2,041 Words | 6 Pages
  • vitamin c and b - 225 Words
    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...
    225 Words | 2 Pages
  • Vitamin C Lab Report
    St. Joseph School/ Ramallah Chemistry lab Report Students name: Laila Salah Date of exp: 11 /4/2013 Partner’s name: Wattan Date of sub: 25 /4/2013 T.Dima Mogannam kaibni Class: 11thsci.stream...
    1,119 Words | 4 Pages
  • Analysis of Vitamin C - Abstract
    Abstract Vitamin C, also known as ascorbic acid, is a water soluble vitamin that is regarded as one of the safest and most effective nutrients. Vitamin C can be found in most fruits and vegetables. The goal of the experiment is to find out the concentration of vitamin C in three citrus fruits, orange, lemon and lime, and to compare them and find out which fruit contains the highest concentration of Vitamin C. By using the juice from each fruit to make a solution to combine with 10cm³ of DCPIP...
    938 Words | 3 Pages
  • Chemistry Vitamin C - 2358 Words
    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...
    2,358 Words | 7 Pages
  • Vitamin C Lab - 324 Words
    IB Biology Lab – Vitamin C content of food Aim: To compare the vitamin C content of different fruits using the decolourisation of DCPIP from blue to clear as the indicator. • You first need to estimate the volume of a known concentration of vitamin C solution required to decolourise 2 cm3 of DCPIP solution. • Then you need to determine the volume of fruit juice that decolourises 2 cm3 of DCPIP solution. This gives an estimate of the concentration of vitamin C in fruit juice. •...
    324 Words | 2 Pages
  • Vitamin c investigation Chemistry
    Vitamin C Molecule Investigation Thomas Philpott Introduction Vitamin C (ascorbic acid) is an essential component of human nutrition, as it is an antioxidant that the body requires. Having a deficiency in Vitamin C can lead to scurvy, a disease characterized by abnormalities in human bones and teeth. Fruits and vegetables are common sources of Vitamin C, notably oranges and citrus fruits. Cooking and the application of heat destroy the vitamin so such fruits must be raw in order to obtain...
    1,747 Words | 7 Pages
  • Investigating Vitamin C - 561 Words
    Investigating Vitamin C Background Vitamin C is found in green vegetables, fruits, and potatoes. It is essential for a healthy diet. The chemical name for vitamin C is ascorbic acid. Ascorbic acid is a good reducing agent and therefore it is easily oxidised. Methods for the detection of vitamin C involve titrating it against a solution of an oxidising agent. Where to start There are several oxidising agents that can be used and a commonly used one is 2,6-dichlorophenol-indophenol or...
    561 Words | 3 Pages
  • Vitamin C Lab - 1739 Words
    Equation HX + NaOH NaX + H2O 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...
    1,739 Words | 6 Pages
  • Vitamin C Content - 3233 Words
    OBJECTIVE  To investigate the vitamin C content of different fruit juices.  To identify which fruit juices has higher vitamin C content and the lowest vitamin C content.  To determine the standard curve of vitamin C based on percentage of vitamin C.  To differentiate between fresh juices and carton juices.  To consider the reliability and validity of the results. PROBLEM STATEMENT Which type of fruit juices has the most vitamin C content? HYPOTHESIS  The smaller the amount of...
    3,233 Words | 10 Pages
  • Titration of vitamin c - 545 Words
    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...
    545 Words | 3 Pages
  • Vitamin C Content - 3490 Words
    BIOLOGY LABORATORY REPORT A – LEVEL MEDICINE (ALM 14) NAME : NURUL AQILAH BINTI MOHD NOR NRIC : 950814-01-**** STUDENT ID : 1311171622 GROUP : 11SC6 TITLE : THE VITAMIN C CONTENT OF FRUIT JUICES AND TABLETS DATE OF EXPERIMENT : 1ST AUGUST 2013 DATE OF...
    3,490 Words | 10 Pages
  • vitamin C& DCPIP---dicussion
     Result: Since the number of fruit juice required decolorizing the blue CDPIP solution in decreased in the order: Red pepper >kiwifruit >lemon >orange. Therefore, Red pepper contain the largest concentration of vitamin C, the second is kiwifruit , the third one is lemon and the lest one which contain the least concentration of vitamin C is orange. Discussion: The reason for diluted the fruit juice is because the fruit juice are colored by the pigment in the fruit juice. It caused...
    250 Words | 1 Page
  • Vitamin C Dcpip - 413 Words
    Vitamin c in fruit juice using dcpip titration Preparing the standard ascorbic acid solution 1. Weigh out accurately about 0.2 g ascorbic acid and make up to 1 L with distilled water. 2. Calculate the concentration of the ascorbic acid solution: C = n/V = m/M/V. Sample calculation: mass of ascorbic acid = 0.205 g C (ascorbic acid) = 0.205/176.12/1.00 = 0.00116 M Preparing the DCPIP solution Weigh out accurately approximately 0.24 g DCPIP (Mr = 268.1g/mol) and make up to 1 L...
    413 Words | 2 Pages
  • Vitamin C and Collagen - 2131 Words
    INTRODUCTION What is collagen ? Collagen is a group of naturally occurring proteins found in animals, especially in the flesh and connective tissues of mammals. It is the main component of connective tissue, and is the most abundant protein in mammals. Collagen, in the form of elongated fibrils, is mostly found in fibrous tissues such as tendon, ligament and skin, and is also abundant in cornea, cartilage, bone, blood vessels, the gut, and intervertebral disc. Certain collagens found in skin...
    2,131 Words | 7 Pages
  • Vitamin C Content of Apple Juice
    Vitamin C Content of Apple Juice Introduction Complete lack of ascorbic acid (a.k.a Vitamin C) in the diets of humans and other primates leads to a classic nutritional disease, scurvy. This disease was widespread in Europe during the fifteenth and sixteenth centuries, but it is rare today. Ascorbic acid is widely distributed in nature, but it occurs in extremely high concentrations in citrus and green plants such as green peppers and spinach. Ascorbic acid can be...
    785 Words | 5 Pages
  • The Vitamin C Content of Fruit Juice
    Title : The Vitamin C content of fruit juice Aim : To investigate the vitamin C content of fruit juice. Introduction : [2]Vitamin C, also known as the ascorbic acid or the L-ascorbate, is required for the growth and repair of tissues in all parts of our body. It is necessary to form collagen, an important protein used to make skin, scar tissue, tendons, ligaments, and blood vessels. Vitamin C is essential for the healing of wounds as well as for the repair and maintenance of cartilage,...
    3,082 Words | 9 Pages
  • Biology Vitamin C Lab Report
    BIOLOGY LAB REPORT TITLE: DETERMINING THE VITAMIN C CONTENT IN VARIOUS FRUIT JUICE PREPARED BY: NOR HUSNA BINTI MOHD ROSLI CLASS: SC3 (ALUK 11) IC NUMBER: STUDENT ID: LECTURER’S NAME: MADAM ZAKIAH BINTI ZAKARIA SUBMISSION DATE: 22 AUGUST 2013 OBJECTIVES: To investigate the vitamin C content in various fruit juices which is based on the graph’s curve obtained. INTRODUCTION [pic] Vitamin C, or...
    4,451 Words | 20 Pages
  • Effect of temperature on Vitamin C content
    Effect of Temperature on Content of Vitamin C Introduction A daily intake of Vitamin C is essential for humans. Without it, the disease scurvy develops as sailors, explorers and people during the long winters in the Northern hemisphere found before the time of Captain Cook. The British Navy started giving sailors lime juice to prevent scurvy on long voyages in 1795. Vitamin C is found in high levels in foods such as oranges, limes, lemons, blackcurrants, parsley and capsicums. Vitamin C is...
    1,131 Words | 5 Pages
  • Vitamin C in Different Fruit Juice
    Activity 1.21- Is high Vitamin C all it claims to be? Purpose: * To investigate the vitamin C content of fruit juice * To investigate which type of fruit juice provides the most vitamin C The quantity of vitamin C in food and drink can be determined using a simple colour test. Vitamin C decolourises the blue dye DCPIP (dichlorophenolindolphenol). Vitamin C is an antioxidant and reduces the DCPIP. DCPIP changes from blue to colourless (or slightly pink) as it becomes reduced. We...
    934 Words | 4 Pages
  • Analysis of Vitamin C I2 + Starch
    (Woods) Analysis of Vitamin C I2 + starch - 1 - Vitamin C (ascorbic acid) was one of the first vitamins which established a relationship between a disease and its prevention by proper diet. Scurvy has been known for ages. Prevention of scurvy was prescribed by eating fresh vegetables and fruits. The active ingredient in fruits and vegetables that helps to prevent scurvy is ascorbic acid which primates, including humans, cannot synthesize. Ascorbic acid is an important biological...
    944 Words | 5 Pages
  • Commercial Vitamin C Tablets - Analysis
    Analysis of Commercial Vitamin C Tablets Aim: To employ iodometric titration to determine the content of vitamin C in commercial tablets using volumetric analysis and compares it with the manufacturersÂ’ specifications. Introduction Vitamin C is an essential substance for maintaining good health and it is proved to be the agent which prevents scurvy. Most animals can synthesize their own vitamin C, but some, such as human cannot. Owing to the increasing concern for oneÂ’s...
    2,292 Words | 12 Pages
  • Analysis of commercial vitamin C tablets
    Chemicals Vitamin C tablet, (1) standard 0.0110 M potassium iodate (KIO3) solution, (100 cm3) standard 0.060 M sodium thiosulphate solution, (Na2S2O3, 160 cm3) 1 M potassium iodide solution, (KI, 20 cm3) 0.5 M H2SO4, (150 cm3) freshly prepared starch solution. Apparatus Titration apparatus Principle In this experiment you are required to determine the vitamin C content of a commercial tablet and compare this with the manufacturers specification. Vitamin C is ascorbic acid, which is rapidly and...
    974 Words | 4 Pages
  • Analysis of Commercial Vitamin C Tablets
    Analysis of commercial vitamin C tablets Objective To determine the vitamin C content in commercial vitamin C tablets by titration between vitamin C (ascorbic acid) & iodine solution. Hence, compare this data with the manufacturer's specification. Principle In this analysis, certain amount of iodine solution, which is known in excess, is added to acidified ascorbic acid solution. Brown iodine can be easily reduced by acidified ascorbic acid to form colourless iodide ion:...
    1,957 Words | 6 Pages
  • Vitamin C Content of Fruit Juices
    BIOLOGY LABORATORY REPORT Name : Amirah Binti Shaharuddin IC No. : 930428-08-5326 Student ID : 2012400466 Group : 13M1 Title : The Vitamin C Content of Fruit Juices Lecturer : Madam Rita Rohaizah binti Sohari TITLE: THE VITAMIN C CONTENT OF FRUIT JUICES INTRODUCTION Vitamin C which is also known as ascorbic acid is an essential nutrient for human. It is a water-soluble vitamin that is necessary for normal growth and development. Water-soluble vitamins...
    2,401 Words | 10 Pages
  • determination of vitamin c content of tablet
     DETERMINATION OF VITAMIN C CONTENT IN COMMERCIAL (CENOVIS) TABLET ABSTRACT In this experiment, the vitamin C content of a commercial tablet is determined and compared with the manufacturers’ specification. Vitamin C is water-soluble and is an enantiomer of ascorbic acid. (Commercial vitamin C is often a mixture of ascorbic acid and other ascorbates.) Ascorbic acid, C6H8O6, is a reducing agent that reacts rapidly with iodine (I2). As the iodine is added during the titration, the ascorbic...
    1,473 Words | 7 Pages
  • Vitamin - 410 Words
    Is High Vitamin C all it claims to be? These days, there is much concern on our consumption of food drink, we're told we do not intake the required daily level of fruit and veg, many manufactures claim to provide excellent levels of nutrients, This experiment will be carried out to see whether the vitamin c levels claimed by manufacturers are actually present in the drinks, this will be done by experimenting various drinks using blue DCPIP solution. The quantity of vitamin C in food and...
    410 Words | 3 Pages
  • Experiment Determine Vitamin C in Pineapple Juice
    Materials : Pineapple juice, 0.1% ascorbic acid solution, 2,6-Dichlorophenol – Indophenol (DCPIP) solution, distill water, filter paper. Apparatus : Small test tube and rack, 1cm3 and 5cm3 syringes with needles, 250ml beaker, 25ml measuring cylinder, stirrer, electronic scale. Methods Part A: Standardization of DCPIP (Titrant) solution 1. 1.00g of ascorbic acid tablet was measured by electronic scale and dissolved in 100.00ml of distilled water. 2. A 1.00cm3 syringe was used to...
    270 Words | 1 Page
  • Production of Vitamin C: Different Types of Fermentation Process
    vitamin C INTRODUCTION Vitamin C is a product that is usually found in many foods and produced by an abundance of chemical companies as dietary supplements. This vitamin is essential to the scurvy patients and used abundantly in cosmetic company due to its antioxidant properties. In the terms of its production, the fact that vitamin C has two totally and distinctly separate sides is still unknown to many people even doctors. The two sides consist of "L"-Ascorbic Acid, which is the (-) side,...
    2,061 Words | 7 Pages
  • IB biology assesment- the effect of heat on vitamin c
     Biology SL Internal Assessment What is the effect of heat on vitamin C concentrated in lemon juice? Introduction: “Vitamins are complex organic substances that are needed in very small amounts for many of the essential processes carried out in the body.” 1It is estimated and supported scientifically that only a few mg are filling the daily recommendation, which is essential for a healthy living. As most of vitamins cannot be produced by our bodies, we need to obtain...
    2,285 Words | 10 Pages
  • Vitamin C vs Chemotherapy and Radiation Therapy
    Vitamins vs. chemotherapy and radiation for cancer therapy We have a general understanding of cancer--one-third of cancer patients die in five years. (1) With present therapies, only slow annual improvement is expected. Vitamins have been extensively demonstrated in clinic trials. (2), (3) Vitamins can strengthen the immune system to improve regular therapies and safely kill cancer. Here we compare cancer therapy by multivitamins with radiation and most chemotherapies. The big question is: Why...
    1,460 Words | 4 Pages
  • Iodometric: Vitamin C and Commercial Fruit Juices
    ANALYSIS OF VITAMIN C IN COMMERCIAL FRUIT JUICES BY IODOMETRIC TITRATION. SHAMSUL AZRIN BIN MD. KANAFE Final Year Project Report Submitted in Partial Fulfilment of the Requirement for the Degree of Bachelor of Science (Hons.) Chemistry in the Faculty of Applied Sciences, Universiti Teknologi MARA. APRIL 2009 This Final Year Project Report entitled “ANALYSIS OF VITAMIN C IN COMMERCIAL FRUIT JUICES BY IODOMETRIC TITRATION” was submitted by Shamsul Azrin Bin Md. Kanafe, in...
    3,511 Words | 22 Pages
  • Scurvy: Vitamin C and United Nations Children
    Scurvy is perhaps the oldest known deficiency disease. However, its specific relationship to ascorbic acid was not recognized until the 20th century. It generally occurs between six and 18 months of age, but can start much earlier in pre-mature babies or those borne of mothers who lacked nutritious food during their later stages of pregnancies. This makes it a type of malnutratian. Mal nutrtiian is a pretty broad typic but a lot of children suffer from it , Malnutrition is a dietary condition...
    1,139 Words | 3 Pages
  • Determination of Vitamin C content in beverages by Calorimetric Method
    FST 1101 Experiment 3: The Determination of Vitamin C in beverages by Colorimetric Method Name: Wong Chun Hong Matric no.: A0123932L Introduction Vitamin C, also known as ascorbic acid, is one of the essential nutrients the human body requires for it to function. There are many benefits of Vitamin C like the protection against immune system deficiencies, cardiovascular diseases, eye diseases and even skin wrinkling. It comes to no surprise how there is a huge emphasis on Vitamin C intake...
    1,429 Words | 5 Pages
  • Effects Of Temperature On Vitamin C In Fruit Juices
    PART B YOU WILL NOW DESIGN AN EXPERIMENT TO STUDY THE EFFECT OF A FACTOR AFFECTING VITAMIN C IN FRUIT JUICES WHAT IS THE EFFECT OF TEMPERATURE ON VITAMIN C IN FRUIT JUICES? The purpose of this experiment is to determine if the difference in temperature will damage vitamin C in any type of fruit juices. Five different temperatures of fruit juices will be used(5, 22, 50, 70, 90) degree Celsius to see how temperature affects the loss of vitamin C in fruit juices. The amount of vitamin C in the...
    557 Words | 3 Pages
  • Quantitative Analysis of Vitamin C Contained in Ribena
    Title: Quantitative analysis of vitamin C contained in ribena Aim: to determine the amount of Vitamin C in a sample of ribena Materials: * Vitamin C (ascorbic acid, C6H8O6) * 4% potassium iodide (KI) * 1M acetic acid (CH3COOH) * N-bromosuccinimide (NBS, C4H4BrNO2) Apparatus: * Conical flask * 100 ml volumetric flask * Weighing bottle * Analytical weight balance * Spatula * Funnel Results: Item: | Mass in grams | Mass of weighing bottle with...
    650 Words | 3 Pages
  • Thermal stability of Vitamin C in Fruit Juice
    962/4 2013-2014 Title: Thermal stability of Vitamin C in Fruit Juice Subtile: Effect of Temperature towards concentration of Vitamin C in Orange Juice Members of the group: Name Identification number Index Number Chan Chyi Yong 950818-08-6787 SA2051/1001 Choong Jian Wen 950620-08-5279 SA2051/1005 Liew Sin Yung 950507-08-5373 SA2051/1011 Yong Yi Xiang 950510-02-5531 SA2051/1018 Teacher Advisor: Pn Kanahambikai Date of Submit of this report: Marks:...
    2,806 Words | 14 Pages
  • Quantitative Analysis of Vitamin C Contained in a Fruit Juice
    Laboratory exercise 3 : Quantitative analysis of vitamin C contained in a fruit juice Aim: To investigate the amount of vitamin C found in all kinds of fruit juice Introduction : Vitamin C is an antioxidant, along with vitamin E, beta-carotene, and many other plant-based nutrients. Antioxidants block some of the damage caused by free radicals, substances that damage DNA. The build-up of free radicals over time may contribute to the aging process and the development of health conditions such...
    902 Words | 3 Pages
  • Experiment Synopsis: Change of Vitamin C Level in Orange Juice
    Paragraph 1 – Introduction When I started researching science fair project ideas, I came across one that really caught my eye. The driving question, or topic, was “Does the level of vitamin C change over time in Orange Juice.” After I viewed the website, I got very excited because it had simple step-by-step instructions about how to test the level of vitamin C. On the following page are the directions. I think I am really excited to do this project because it sounds very interesting and fun to...
    445 Words | 2 Pages
  • What Type of Fruit Juice Provides the Most Vitamin C?
    What type of fruit juice provides the most vitamin C? In my investigation I plan to find out how much vitamin C there is in orange juice, pineapple juice and tropical juice and then compare my results to find out which juice has the most vitamin C. The independent variable is the type of juice and the dependant variable is the volume of fruit juice needed to decolourise 1cm3 Of 1% DCPIP solution. DCPIP solution can be used to measure the amount of vitamin C in each juice as an antioxidant...
    635 Words | 2 Pages
  • Chemistry Lab Report : Determination of Ascorbic Acid Content in Vitamin C Tablets
    EXPERIMENT 1 DETERMINATION OF ASCORBIC ACID CONTENT IN VITAMIN C TABLETS INTRODUCTION To calculate the mass of the ascorbic acid and hence the mass percentage of ascorbic acid in the vitamin C tablet. PROCEDURES (Refer to Lab Manual) 1. Accurately weight vitamin C (effervescent type) in a 50 ml beaker. Add about 30 ml of deionised water to dissolve the vitamin C tablet. Once the tablet has dissolved completely, transfer the solution into a 250 ml volumetric flask via a plastic...
    1,048 Words | 4 Pages
  • Designing an Experiment to Measure Vitamin C Content in Fruit Juices
    The experiment is trying to determine how much of a solution containing vitamin C is required to be added to 1 cm3 of blue chemical to change its colour from blue to clear. The experiment users an new and old lemon, orange and blackcurrant juice, each with varying amounts of vitamin C content. Each experiment has independent and dependent variables. The solutions of soft drinks contain different levels of vitamin C (with old and new varieties) will be the independent variables in the...
    931 Words | 3 Pages
  • Chemistry Lab Report for Vitamin C Estimation by Back(Idiometric) Titration
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