Journal 2011‚ 10:46 http://www.nutritionj.com/content/10/1/46 RESEARCH Open Access Misleading measures in Vitamin D analysis: A novel LC-MS/MS assay to account for epimers and isobars Iltaf Shah1‚ Ricky James1‚ James Barker2‚ Andrea Petroczi1 and Declan P Naughton1* Abstract Background: Recently‚ the accuracies of many commercially available immunoassays for Vitamin D have been questioned. Liquid chromatography tandem mass spectrometry (LC- MS/MS) has been shown to facilitate accurate
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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 with
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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 until
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Acid Determination of Vitamin C Tablets and Salt Solutions Chem 1290-016 03-05-2010 ------------------------------------------------- Purpose: The purpose of this lab was to use acid-base titrations to find the mass percent of ascorbic acid in a Vitamin C tablet. A known concentration of sodium hydroxide was used and the value found was compared to the stated amount of ascorbic acid listed on the vitamin container. Also in this lab the acidity of different salt solutions were tested using
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Top Vitamins for Bodybuilders: Biotin: There’s a limited amount of sports nutrition research on Biotin‚ it makes our top list because it has critical functions in amino acid metabolism and the production of energy from many sources. It also may be one vitamin that some bodybuilders have trouble when attempting to maintain an adequate supply. Reason bodybuilders may have difficulty with Biotin is because it can be blocked by a substance. Biotin In our Foods: Avidin is found in raw egg whites‚
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Soluble Vitamins SCI/241 According to the textbook “vitamins are organic compounds that are essential in the diet in small amounts to promote and regulate body processes necessary for growth‚ reproduction‚ and the maintenance of health.” (Grosvenor & Smolin‚ Ch. 7 pg. 200) Vitamins are classified into two groups based of their solubility‚ as some are soluble in water and others are soluble in fat‚ with these characterizations we are able to know more about how the different types of vitamins are
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Naomi Ruiz Vitamin D Paper Dear Grandfather‚ After doing extensive research on the extremely controversial and confusing topic of how much vitamin D a person needs I have become much more knowledgeable on the subject. Allow me to enlighten you by first explaining exactly what vitamins are and what they do for your body. According to the book Vitamins‚ vitamins are a group of organic compounds which are essential in very small amounts for the normal functioning of the body (Ball 2004). In the article
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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‚ blackcurrant
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Fat and Water Soluble Vitamins Every day‚ your body produces skin‚ muscle‚ and bone. It churns out rich red blood that carries nutrients and oxygen to remote outposts‚ and it sends nerve signals skipping along thousands of miles of brain and body pathways. It also formulates chemical messengers that shuttle from one organ to another‚ issuing the instructions that help sustain your life. To do all this‚ your body requires raw materials. These include vitamins that your body needs but cannot manufacture
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RICKETS For Scientific Principles and Health and Disease By: Mackenzie Gray 112-69-7540 April 7‚ 2010 Rickets is a disease that deals with a deficiency with Vitamin D. Vitamin D is important by controlling calcium and phosphate levels. If the blood levels of these minerals become too low‚ the body may produce hormones that cause calcium and phosphate to be released from the bones eventually this leads to weak and soft bones. (2) Throughout this paper we will go over a variety
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