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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------------------------------------------------------------------------------------------------------------- Title of experiment The determination of vitamin C. Aim(s) of the experiment (objectives) To determine the concentration of vitamin C in different kinds of juices. Hypothesis Freshly squeezed juice will have the most vitamin C compared to the other types of juices and drinks‚ because the fruit is picked fresh‚ and it is not stored‚ preserved or exposed to oxygen. Chemicals and materials
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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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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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example‚ we used error bar where we are trying to compare experiment with controls in Biology. Hepatitis C virus is really difficult to isolate so scientists compared DNA copies of HCV clones and identified one DNA sequence in all clones. We can’t measure perfectly so the results may be meaningless and we used error bar to used on graphs to show the error. Most
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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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Hepatitis C Travis F. Shoffner American Military University Abstract This research paper looks at the infectious disease hepatitis C. The research draws upon primary sources including medical websites and electronic newspaper articles. The goal is to inform and describe the disease‚ cite current infections and death statistics related to it. The paper will also explain how the disease affects the body and discuss current and future treatment options. This research will provide valuable
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Hepatitis C Introduction Hepatitis C is a blood borne infectious disease caused by hepatitis C virus (HCV) and it primarily affects the liver. It is a major public health concern in both developing and industrialized nations worldwide because of its contagious nature. According to Bartenschlager (2013)‚ Hepatitis C virus is a single stranded encapsulated RNA genome belonging to the genus Hepacivirus and flaviviridae family and the discovery of the virus in 1989 through virus isolation methods
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Human Hepatitis C In 2013‚ there were an estimated 29‚718 cases of acute hepatitis C virus infections reported in the United States. There were 3.5 million people who were reported to have chronic hepatitis C. Acute hepatitis C is a short-term illness that occurs within the first six months after someone is exposed to the hepatitis C virus. Chronic hepatitis C means the virus remains in the person’s body. Hepatitis C can last a lifetime and lead to cirrhosis or scarring of the liver or liver cancer
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INTRODUCTION In our experiment we tested the amount of vitamin C in a certain amount of lemon juice. We did this with the help of PCPIP which is an indicator that shows the presence if C vitamin. For this we used the mentioned indicator‚ pipette‚ three eprouvetes‚ 0.1% of C vitamin solution and lemon juice. First we had to get the volume of 0.1% vitamin C solution that is needed for our amount of PCPIP (2ml) to decolorize. Then we had to determine the volume of lemon juice that is needed to
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