Pigments

extract all of the pigment molecules from the leaves. The extract was then put through a piece of filter paper to filter out the large bits of spinach. The extract was then put in a microcentrifuge to help separate the pigment molecules from any larger pieces left in the extract. The extract was placed on a single spot on a piece of filter paper. The filter paper was then placed into a chromatography solvent to separate the pigment molecules further. The distance that the pigment molecules went were

For the Plant Pigments I and II- Pigment Extraction lab, the objective was to find a solution that separated pigments and allowed them to travel up the chromatograph. The results of the experiment found that a 1:5 Acetone to Hexane ratio was the best solvent to use. In order to execute the lab we had to roll a penny over the spinach, which would in turn extract the spinach pigment. Even though this is how the experiment was carried, it was also a limitation (and will affect the outcome of the experiment)

For this report, I will explain to you the pigment changes in Fall, more specifically the different colors the leaves will change into when fall comes around, and why this happens. The first thing I want to go into is the difference between the colored leaves and the regular green leaves we see. These two can vary in why they are different, but the basis is that the two differ because of the chlorophyll, the phycobilins, and the carotenoids. The pigment of the leaves heavily depend on these three

1. Introduction 34 Carotenoids are tetraterpenoids that has 40 carbon atoms chains which are obtained in the outer membrane and in 35 the thylakoids [1, 2]. Carotenoids are the accessory photosynthetic pigment of cyanobacteria [3]. In 36 cyanobacteria, β-carotene predominates in the thylakoid membranes whereas xanthophyll lies in inner and outer 37 membrane [4, 5, 6]. Carotenoids in cyanobacteria have two major functions: they are light harvesting for 38 photosynthesis and prevention from photo

Purple – A Mystifying Chinese Pigment We all use organic dyes which brighten of lives for a few years and then fade away. Han purple is a 2800 year old pigment, artificially prepared by the Chinese (Link 6-a), which still retains its charm. This pigment was found on the glass-beads worn by the rich and the famous, ceramic utensils, wall paintings and on the statues of famous Terracotta Warriors. It was used most extensively during Han’s Dynasty, hence the name. This pigment requires a combination of

Jennifer Laney Chris Xue November 18, 2015 CHEM 106A Section 001 Project 6 Proposal Pigment Synthesis Equation: CaCl2(aq) + K2CO3 (aq)  CaCO3(s) +2KCl(aq) Procedure to Synthesis and Isolate Pigment: 1) Mix, 3.0g of K2CO3 and 4.0mL of water to create K2CO3 (aq) (liquid). 2) Mix, 2.5g of CaCl2 and 5.0mL of water to create CaCl2(aq) (liquid). 3) Mix, CaCl2(aq) and K2CO3 (aq) in a beaker and stir. The precipitate (CaCO3) will form. 4) Utilize suction filtration for the separation of the precipitate

made prior to the experiment being ran about the concentration of pigments in Drosophila were similar to the observed concentration of pigments. Once four fly heads of each pigment were crushed onto filter paper, chromatography was ran. After six hours of the chromatography being run, they were removed from the solvent and dried. Once the filter paper was dry, it was placed under a UV light for a better observation of the pigments present in the eyes of the fly. What was found in the white was much

Reject I would reject my hypothesis because I saw the Xanthophyll pigment, the yellow color. 6. Pigment Movement Some pigments move further than others because of the size of their particles. Smaller, lighter particles will move through the filter paper more swiftly than larger, heavier particles. This is true because smaller, lighter particles are more soluble in solvent, thus allowing them to move further. In addition, a pigments affinity for paper will affect its distance travelled. The more polar

Fluorescent pigments are a special type of pigment that have the unique ability to reemit a greater frequency of light. Fluorescent pigments absorb the light frequencies that are emitted onto them, and reemit them. Fluorescent pigments stand out to the human eye making them a great pigment for advertising use, children’s toys, safety protection wear, and many other commercial uses. Fluorescent pigments were invented in the 1940’s by the Switzer brothers. Bob was a working man and Joe was an amateur

synthesize a series of inorganic pigments, qualitatively observe their macroscopic and microscopic properties and perform a series of qualitative micro-chemical spot tests on them. The other purpose was to design a qualitative analysis experiment for the purpose of identifying an unknown inorganic pigment. In the first week of this experiment, barium white, zinc yellow and chromium oxide green were synthesized using macroscopic inorganic pigment reactions. The final yield of chromium