Vitamin A Retinoic acid‚ or Vitamin A‚ is an essential human nutrient referring to a family of similarly shaped molecules called the retinoids. Its discovery dates back to research done in 1906‚ which indicated that factors other than carbohydrates‚ proteins‚ and fats were necessary to keep cattle healthy. Vitamin A was independently discovered by Elmer McCollum at the University of Wisconsin-Madison‚ and Lafayette Mendel and Thomas Osborne at Yale University. It was named due to the fact that
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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 drink
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VITAMINS Introduction Vitamins are organic food substances found only in living things‚ i.e. plants and animals. They are essential for our bodies to function properly‚ for growth‚ energy and for our general well-being. With very few exceptions the human body cannot manufacture or synthesize vitamins. They must be supplied in our diet or in man-made dietary supplements. Some people believe that vitamins can replace food‚ but that is incorrect. In fact‚ vitamins cannot be assimilated without also
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CHEMISTRY 221 LABORATORY�QUANTITATIVE ANALYSIS EXPERIMENT: DETERMINATION OF ASCORBIC ACID IN VITAMIN C TABLETS THEORY: Ascorbic acid‚ C6H8O6‚ MM = 176.13‚ can be oxidized to form dehydroascorbic acid by bromine via the following reaction: The bromine or iodine used in the titration is generated by adding an excess amount of KBr or KI to an acidified solution of the sample according to the following reaction: BrO3- + 5 Br- + 6 H+ 3 Br2 + 3 H2O IO3- + 5 I- + 6 H+
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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‚ ascorbic acid C6H8O6‚ reacts
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DISINTEGRATING TABLETS: A NEW ERA IN NOVEL DRUG DELIVERY SYSTEM AND NEW MARKET OPPORTUNITIES *Sharma Deepak‚ Kumar Dinesh‚ Singh Mankaran‚ Singh Gurmeet‚ Rathore M.S CT Institute of Pharmaceutical Sciences‚ Shahpur‚ P.O- Udopur‚ Near Lambra‚ Jalandhar -144020‚ Punjab‚ INDIA *Corresponding Author’s Email: deepakpharmacist89@yahoo.com‚ M obile: 09988907446 Received 15 M arch 2012; Revised 13 April 2012; Accepted 21 April 2012‚ Available online 15 M ay 2012 ABS TRACT Fast disintegrating tablets (FDTs) have
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take vitamin supplements ? I do not think we should take vitamin supplements as studies have shown that vitamins from supplements do not act on the body as the same way as vitamins from food‚ we can get what we need from a balanced diet. Fruit and veg which are high in vitamins also supply fibre which is necessary for health and often lacking in diets relying on supplements . Vitamins can have toxic effects‚ some may need vitamins but more vitamins is not necessarly better for example‚ vitamin A stores
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Vitamins and Minerals What are vitamins? Vitamins are nutrients that everyone needs in small amounts for the body to work properly. Different vitamins have different functions. For example‚ some enzymes need particular vitamins to work. Your body can’t make most vitamins apart from vitamin D‚ so you have to get them from the food you eat. There are two types of vitamins: water-soluble vitamins - these cannot be stored in your body and need to be replaced regularly in your diet fat-soluble
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Vitamin D Vitamin D: Wonder Pill or Overkill? Wouldn’t it be great if one vitamin could build stronger bones and protect against diabetes‚ multiple sclerosis‚ cancer‚ heart disease‚ and depression? Or even help you lose weight? Researchers have high hopes for vitamin D -- which comes from our skin’s reaction to sunlight‚ a few foods‚ and supplements. Learn the facts in the slides ahead … and see who’s at risk for a "D" deficiency. Vitamin D Boosts Bone Health Vitamin D is critical for strong
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1998: Notes on the stratigraphy and chronology of Iron Age Tacanach‚ Tel Aviv 35‚ 208– Finkelstein‚ I. 2001: The rise of Jerusalem and Judah: the missing link‚ Levant 33‚ 105–115 MacDonald‚ K. 2011: Special issue: innovation and the evolution of human behavior Early Metallurgy in Cyprus‚ 4000–500 BC‚ Larnaca‚ Cyprus 1–6 June 1981‚ 303–312‚ Nicosia Gosden‚ C. 1994: Social Being and Time‚ Oxford Gosden‚ C Gottlieb‚ Y. 2010: The advent of the Age of Iron in the Land of Israel: a review and reassessment
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