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
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Vitamin D Levels and Multiple Sclerosis Alicia R. Turner ITT TECH Institute Vitamin D Levels and Multiple Sclerosis Multiple Sclerosis is an auto-immune deficient disease with no known cure to date. Multiple Sclerosis is damage done to the fatty sheath‚ myelin‚ which insulates the nerve fibers in the brain. Multiple Sclerosis symptoms or flare-ups‚ as they are often referred‚ may include seizures‚ double vision‚ numbness‚ muscle control‚ difficulty with speech and ability to
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Some cases Vitamin C has been proven harmful. The only reason we believe that Vitamin C is good for us in large doses is because of a man named Linus Pauling. Linus Pauling was an American chemist‚ biochemist‚ peace activist‚ author‚ and educator. He was the only person to receive two noble prizes
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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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Mineral Resources‚ Security and Development in Africa By Braima Koroma Lecturer‚ Institute of Geography and Development Studies‚ School of Environmental Sciences‚ Njala University Introduction: an overview Africa’s known mineral wealth places it among the world’s richest continents. Its very large share of the world’s mineral resources includes diamonds‚ gold‚ silver‚ the platinum group metals‚ emeralds‚ rubies‚ and other precious minerals‚ bauxite‚ manganese‚ nickel‚ cobalt‚ copper
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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. http://pubchem.ncbi.nlm.nih.gov/summary/summary
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cavity around the heart. The mesothelium also produces a lubrication fluid that allows the organs to move easily. Mesothelioma is most often a cancer associated with large amounts of exposure to asbestos. Asbestos is a group of naturally occurring minerals whose characteristic feature is fibers. Asbestos was commonly used between 1940 and 1980 for its durability‚ fire resistance and insulating properties‚ therefore it is found in the majority of homes built before 1990. Asbestos poses little risk unless
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The purpose of laboratory eight was to observe the affect of acid and alkaline cooking pH on pigments and textures of the vegetables(Yuan‚ 2014a) . Students were meant to gain experience on the different methods of processing fresh fruit and vegetables‚ both by observation and practise (Yuan‚ 2014a). The different methods were the effect of pH on pigment and texture of various vegetables‚ the effect that cooking procedures has on various pigments and flavours‚ the effect of sugar on texture and flavour
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look at one of gatorade’s closest competitor‚ Vitamin Water‚ the liquid inside is virtually identical. However‚ the answer for this question lies in advertising and marketing of these products. While these products are very similar in ingredient and nutrient composition‚ Gatorade does a much better job attracting consumers because of their strong appeal to emotion on their website‚ on their bottles‚ and through
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1. For air travelers‚ one of the biggest complaints is of the waiting time between when the airplane taxis away from the terminal until the flight takes off. This waiting time is known to have a skewed-right distribution with a mean of 10 minutes and a standard deviation of 8 minutes. Suppose 100 flights have been randomly sampled. Describe the sampling distribution of the mean waiting time between when the airplane taxis away from the terminal until the flight takes off for these 100 flights. a)
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