Preview

Ascorbic Acid Determination

Powerful Essays
Open Document
Open Document
2869 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Ascorbic Acid Determination
Determination of Vitamin C (Ascorbic acid) concentration in some of Commercial Products, by Redox Titration

Mouhannad AL.-Hachamii Sadiq J. Baqir Saadon A.Aowda Fatima A. Hussein,
Dep.of chemistry, college of science, Babylon University
Muhammed K.Alasedi
Ministry of Health Hilla city, Babylon
Abstract
The goal of this search is to determine the concentration of vitamin C (Ascorbic acid ) in some of a Commercial Products, Vegetables and Fruit Juices by Redox Titration. A redox titration, involving an Iodometric method, has been used to do the analysis. The samples classified by their Vitamin C content.
الخلاصة
الهدف من البحث لتحديد تركيز فيتامينC (حامض الاسكوربيك)في عدد من المنتجات التجارية والخضروات وعصائر الفواكه بواسطة التسحيح الاختزالي.التسحيح الاختزالي يتضمن طريقة اليودو ميتريا باستخدام التحليل.النماذج مصنفة حسب احتوائها لفيتامينC.
Introduction
Vitamins are a group of small molecular compounds that are essential nutrients in many multi-cellular organisms, and humans in particular. L-Ascorbic acid was first isolated as a pure substance by Albert Azent-Gyorgi and Charles Kingin 1928 [Paulling ,1970] , an anti-oxidant and free radical scavenger, is found ubiquitously in fruit and vegetables such as citrus fruits (oranges, lemons, limes, tangerines etc.), melons, tomatoes, peppers, broccoli, green leafy vegetables such as spinach, potatoes and turnips, its quantitative determination is especially important in the production of wine, beer, milk, soft drinks and fruit juices, where it can be a quality indicator [Gerrior & Zizza,1994] .Given the essential role played in the human diet and necessary to growth and repair of tissues in all parts of human body .It is necessary to form collagen an important skin proteins ,scar tissue ,tendons, ligaments, and blood vessels. vitamin C is essential for the healing of wounds, and for the repair and maintenance of cartilage, bones and teeth [Mcevoy ,1993] . Since vitamin C is easily



References: Baily D.N., 1974 , J.CHEM.ED.,51,488. Dennis Pittenger, 1983 Area Environmental Horticulturist, Southern Region, University of California Cooperative Extension. Source. Vegetable Briefs (223), June. Kallner, A. 1986, Annals of the New York Academy of Sciences, 498, 418-423. Meissam Noroozifar,Mozhgan KhoRASANI-MotlAGH,Application of pot.chromate –Diphenyl carbazide in Quan.Detn .Of Asc.acid by spectrophotometry .Turk.J.chem ,27(2003),717-722 . Mitchell, G.E., McLauchlan, R.L., Isaacs, A.R., Williams, D.J., Nottingham, S.M., 1992. Effect of low dose irradia- tion on composition of tropical fruits and vegetables. J. Food Comp. Anal. 5, 291–311. Paulling L. 1970 Evolution and theneed for as ascorbic acid Proc.nat acad sciusa,7:1643,. Sidibé M., Scheuring JF, Tembely D, Sidibé M M, Hofman P, and Frigg M. 1996. 'Baobab - homegrown vitamin C for Africa '. Agroforestry Today. 8:2. pp 13-15. Teoh ST (1975). Recommended daily dietary intakes for Peninsular Malaysia. Med J Mal30: 38-42. Vanderslice, J.T., Higgs, D.J., Hayes, J.M., Block, G., 1990. Ascorbic acid and dehydroascorbic acid content of foods-as- eaten. J. Food Compos. Anal. 3, 105–118. Zeynep Aydogmus , Sevil Muge cetin, Detn .Of Asc .Acid in vegetable by Der ,vatiue spectrophotometry .Tark .J.Chem ,26 (2002), 697-704.

You May Also Find These Documents Helpful

  • Powerful Essays

    Lab 2 Autosaved

    • 1562 Words
    • 8 Pages

    Vitamin C is highly water-soluble and has both acidic and strong reducing properties. It occurs naturally in many animals and plants such as the plants of the fruits used in this lab. Vitamin C exist naturally in the L-ascorbic acid form. It is a strong reducing agent and when oxidative stress is present, it easily converts to the oxidized form which is. Vitamin C is an essential nutrient in humans because it functions as a cofactor in several vital enzymatic reactions. Humans do not synthesis vitamin C so need to obtain it from other sources such as juices and fruits. A deficiency of vitamin C would lead to scurvy in human. It has many benefits which include prevention of the common cold/heart diseases and strengthening of the immune system. The recommendation for vitamin C intake for humans is approximately 60 – 95 mg per day and a maximum intake of 2000 mg per day. A long term overdose of vitamin C may cause diarrhea, iron overload disorders and kidney stones. (Food Science and Technology Strand 2015)…

    • 1562 Words
    • 8 Pages
    Powerful Essays
  • Good Essays

    Vitamin C is a water-soluble vitamin and is necessary for normal growth and development. It is essential for the growth, repair, and maintenance of tissue, cartilage, bones, and teeth. The C vitamin also aids in healing wounds and making scar tissue. Vitamin C is an antioxidant that helps reduce the effects of…

    • 898 Words
    • 3 Pages
    Good Essays
  • Good Essays

    review

    • 711 Words
    • 3 Pages

    Vitamin C is a water soluble nutrient found in some foods. In the human body it is an antioxidant. The body also needs vitamin C to make collagen, a protein required to help wounds heal. Vitamin C improves the absorption of iron from plant-based foods and helps the immune system work properly to protect the body from disease. Lastly, it helps keep your teeth and gums healthy.…

    • 711 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Both of the two different titration methods use the same basic set up. Firstly, the buret must be cleaned thoroughly with tap water. While cleaning the buret, it is also checked to make sure there are no leaks. The ring stand is then set up with a buret clamp and the cleaned buret placed in it. Then the buret is filled with 5-10mL of sodium hydroxide, M .0466 NaOH, three times and emptied after each time to completely rinse the buret.…

    • 1206 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    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 do. I hope to prove what the driving question/topic entails.…

    • 445 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Chromatography White Wine

    • 984 Words
    • 4 Pages

    RESULTS AND DISCUSSION solutions containing increasing amounts of the organic acid. These solutions were contained in flasks numbered 5, 6, 7, 8, and 9. (Refer to the Appendix to see components of each flask). Tables 2, 3, 4, and 5 show the peak areas and the equation of the calibration curve obtained for each organic acid in the chromatograms obtained for flasks 5 to 9. Table 2. Peak Areas of Tartaric Acid in Flasks 5, 6, 7, 8,…

    • 984 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    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 the benefits from these sources.…

    • 1747 Words
    • 7 Pages
    Powerful Essays
  • Good Essays

    Unfortunately, vitamin C is very easily lost from fruits and vegetables when processed. That's why in many products it is reintroduced as an additive.…

    • 1072 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    Scurvy Paper

    • 305 Words
    • 2 Pages

    Vitamin C can be found in citrus fruits, such as oranges, grapefruits, lemons and limes also; green vegetables, such as broccoli or green beans. It also comes in other things for example sweet potatoes and fresh milk. (26 Fruits) (Scurvy: NHS)…

    • 305 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Vitamin C

    • 1193 Words
    • 5 Pages

    Ascorbic acid, C6H8O6, MM = 176.13, can be oxidized to form dehydroascorbic acid by bromine via the following reaction:…

    • 1193 Words
    • 5 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Method to test hypothesis: The hypothesis can be tested by first determining the amount of ascorbic acid needed to decolourize 3mL of DCPIP solution, and calculating the concentration of Vitamin C in the ascorbic acid. Next, determine the amount of fruit juice needed to decolourize 3mL of DCPIP solution, and calculating the concentration of Vitamin C in the fruit juice initially. Then, heat a few test tubes of fruit juice in a boiling water bath for different periods of time- 3min, 7min, 11min, and 15 min. The test tubes should hold amounts of fruit juice that are more than the amount of fruit juice needed to decolourize 3mL of DCPIP initially. Take out the test tubes at the designated times and calculate their concentrations. Finally, the concentrations can be compared and the trend can be shown.…

    • 296 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    Vitamin C

    • 2742 Words
    • 11 Pages

    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.…

    • 2742 Words
    • 11 Pages
    Powerful Essays
  • Good Essays

    Culinary Nutrition

    • 2281 Words
    • 10 Pages

    POTENTIAL BENEFITS: In high doses can cause diarrheal. Large amounts of Vitamin C may cause a false negative reading when blood in the stool is being tested.…

    • 2281 Words
    • 10 Pages
    Good Essays
  • Best Essays

    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, and DAscorbic Acid, which is the (+) side. The L side of Vitamin C is the active side, and is the side which is beneficial to mankind. The D-side of Vitamin C is designated as useless and discarded by the body, as most research shows. People ingesting Vitamin C would only benefit from the "L" side of Vitamin C for example, in an orange, the Vitamin C is primarily the L side [1]. Therefore, during the whole process of the production of vitamin c, the desired end product is Lascorbic acid.…

    • 2061 Words
    • 9 Pages
    Best Essays
  • Satisfactory Essays

    Mass of ascorbic acid = 4.92825 x 10-4 x 176.12 g = .086796339 g = 86.80 mg…

    • 254 Words
    • 2 Pages
    Satisfactory Essays

Related Topics