Analysis of Food Dyes in Beverages Samantha Sequito and Anna Steenland Lab Performed: December 3‚ 2013 Lab Due: December 13‚ 2013 Introduction: Different amounts of FD&C Blue I were diluted with water to make eight differently concentrated 10 mL solutions. Samples were placed in the spectrophotometer to determine the percent transmittance of FD&C Blue 1. All of the data was summarized in graphs to predict the concentration of FD&C Blue I in a sample of Gatorade.
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Tie dye is haute Sixties is back and we don’t mean bell-bottom pants‚ vests or long hair. We mean tie dye‚ the most sought after patterns this summer. One can hardly imagine the chaotic swirls to be considered high fashion. The mere mention brings memories from the past‚ the wild psychedelic prints and the hippy culture. Yet the colorful patterns are making a comeback with who is who of the fashion industry spotted in one. The demographic might have changed the overall style has changed what hasn’t
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TITLE Crime and Dye Lab Special Projects 1 Martin Enem LAB SECTION: BB2 INTRODUCTION Light is usually viewed as a result of the heating of a substance. The higher the temperature at which the substance is heated‚ the greater the vibrations that lead to certain light intensity given off by the molecule. It is this same theory that suggests why steel glows red hot when heated to high enough temperatures. The process of light emissions can also be induces through other means. 1 One
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PROCEDURE TO CARRY OUT COLOUR CONTRAST DYE PENETRANT INSPECTION TECHNIQUE WITH THE FIELD KIT INTRODUCTION: This document will give the procedures to be carried out for detection of surface crack on aircraft aerofoil suspected to be cracked using the color contrast Dye Penetrant technique. Inspection should be carried with the field kit consist of 1) Penetrant 2) Cleaner or remover 3) Developer-to eccentricity any indications. All three items are readily available in aerosol forms.
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The purpose of this lab was to synthesize indigo and an azo dye and to determine how effective each dye was to dye different types of fabrics. 0.168g of 2-nitrobenzaldehyde was dissolved into acetone along with 25 drops of distilled water and NaOH to synthesize indigo. The solution was filtered‚ and the solid indigo was placed into the filter flask to reduce indigo to leucoindigo with 10mL of 3M NaOH. The flask was heated along with sodium dithionite and distilled water added to the flask. Afiber
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Thousands of people across the world dye their hair; dating back all the way to 3400 B.C. when “people used extracts from plants or minerals that contained pigments like those of henna or black walnut shells”("History & Future Discovery of Hair Dye."). In 1932‚ hair dye was refined to create chemical reactions in the hair to change the natural structure and color of hair. Cosmetologists are near a plethora of chemicals every day that include carcinogens and mutagens they would never suspect
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Purpose: The purpose of this lab is to find the amount of blue dye #1 in the blueberry pomegranate gatorade. Procedure: We created dilutions using stock solution(10mL stock/0 mL water‚ 8mL/2mL‚ 6mL/4mL‚4mL/6mL‚ 3mL/7mL‚ 2mL/8mL‚1mL/9mL‚ 0mL/0mL). Before we put each dilution in the SPEC 20‚ we put water in a cuvette and put it in the SPEC 20 so we could zero out the percent transmittance. We collected the percent transmittance of each dilution using the SPEC20 with a wavelength of 630nm.
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Analysis 1. Examine the structures of the FD&C Red No. 40‚ Blue No. 1 and Yellow No. 5 dyes. What are the similarities and differences in the structures of the three dyes? a. Red No. 40‚ Blue No. 1‚ Yellow No. 5 contain carbon rings and NaSO3. Additionally‚ Red No. 40 and Yellow No. 5 are very similar‚ as they both contain one nitrogen double bond‚ a hydroxyl group‚ and no ions. Blue No.1 contains nitrogen and chlorine ions and N(C2H5)CH2. 2. In the Introductory Activity‚ the developing solvents
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spectroscopy create graph to determine the concentration of dye in a sport drink‚ by creating series of standard dilutions of an FD&C Blue 1 Stock solution and measuring the percent transmittance of each dilutions. Results in each dilutions will be use‚ to determine the linear function among various functions (T‚ T%‚ log T‚ - logT) For a Beer’s law calibration curve. The produce provides a model for guided-inquiry analysis of the concentration of food dye(s) in sports drinks and other consumer beverages.
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The release of dyes through contaminated water into the ecosystem from various industries like textile‚ leather‚ cosmetic‚ paper‚ pharmaceutical and food industries is not only a source of aesthetic pollution but also can cause human health disorders and adversely affects the aquatic life causing severe environmental problems worldwide. In view of increasing concern from perspective of environmental safety and health‚ physico-chemical and biological techniques are to be constantly explored for decolourization
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