THE VITAMIN C CONTENT OF FRUIT JUICE Aim: To investigate the vitamin C content of fruit juice.Hypothesis: I believe the more drops of fruit juice taken to decolourise DCPIP‚ the smaller the amount of vitamin C in that fruit juice. This is because DCPIP needed to be decolourised by ascorbic acid in fruit juice‚ so less concentration of ascorbic acids means that more ascorbic acids is needed to decolourised DCPIP. I believe that freshly squeezed orange is going to have the most Vitamin C content
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Vitamin C also known as ascorbic acid is vital to our body. It can strengthen our body to resist against infection. It is known that deficiency of vitamin C can cause scurvy. Vitamin C is present in various fruits. Since vitamin C is a reducing agent‚ it can be deactivated by a wide range of oxidizing agents including atmospheric oxygen. Therefore‚ precautions are needed to prevent or minimize the degradation of vitamin C during sample preparation. The ascorbic acid exists in two forms which
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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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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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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 are
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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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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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Heavy calcium carbonate grinding mill: 1) High capacity 2) Low consumption 3) Finished fineness adjustable Detailed Product Description about Heavy calcium carbonate grinding mill Heavy calcium carbonate grinding mill is mainly applied to grind non-inflammable‚ non-explosive and brittle materials with Mohs’ hardness under six. Such as calcite‚ chalk‚ limestone‚ dolomite‚ kaolin‚ gypsum‚ and talc etc‚ totally more than 100 kinds of materials. Product fineness can be controlled between 300~3000
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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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