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Journal Articles: 48 results
Stilling Waves with Ordered Molecular Monolayers  Ed Vitz
The amazing ability of a film of oil one molecule thick to dissipate the relatively large energy of water waves can be readily demonstrated, but an explanation of the effect has been elusive until recently.
Vitz, Ed. J. Chem. Educ. 2008, 85, 1064.
Lipids |
Molecular Properties / Structure |
Noncovalent Interactions |
Surface Science |
Water / Water Chemistry |
Fatty Acids
Easy-To-Make Cryophoruses  Rubin Battino and Trevor M. Letcher
This article describes some simple and easy-to-make cryophoruses, ideal for demonstrating evaporative cooling to students at all levels.
Battino, Rubin; Letcher, Trevor M. J. Chem. Educ. 2008, 85, 561.
Lipids |
Physical Properties |
Thermodynamics |
Liquids
Biochemical View: A Web Site Providing Material for Teaching Biochemistry Using Multiple Approaches  Fernanda C. Dórea, Higor S. Rodrigues, Oscar M. M. Lapouble, Márcio R. Pereira, Mariana S. Castro, and Wagner Fontes
Biochemical View is a free, full access Web site whose main goals are to complement existing biochemistry instruction and materials, provide material to teachers preparing conventional and online courses, and popularize the use of these resources in undergraduate courses.
Dórea, Fernanda C.; Rodrigues, Higor S.; Lapouble, Oscar M. M.; Pereira, Márcio R.; Castro, Mariana S.; Fontes, Wagner. J. Chem. Educ. 2007, 84, 1866.
Amino Acids |
Bioenergetics |
Carbohydrates |
Enzymes |
Glycolysis |
Lipids |
Metabolism |
Fatty Acids
Biodiesel from Used Oil  Roland Stout
Recently three papers have appeared in this Journal discussing the properties of biodiesel fuels and their production from biological oils, either new or used. We will frustrate students if we do not discuss why laboratory scale productions of biodiesel from used oil may produce significant amounts of emulsion.
Stout, Roland. J. Chem. Educ. 2007, 84, 1765.
Esters |
Fatty Acids
Enthalpy of Vaporization and Vapor Pressures: An Inexpensive Apparatus  Rubin Battino, David A. Dolson, Michael R. Hall, and Trevor M. Letcher
Describes an inexpensive apparatus for the determination of the vapor pressure of a liquid as a function of temperature for the purpose of calculating enthalpy changes of vaporization. Also described are a simple air thermostat and an inexpensive temperature controller based on an integrated temperature sensor.
Battino, Rubin; Dolson, David A.; Hall, Michael R.; Letcher, Trevor M. J. Chem. Educ. 2007, 84, 822.
Gases |
Laboratory Equipment / Apparatus |
Lipids |
Phenols |
Physical Properties |
Thermodynamics |
Liquids |
Phases / Phase Transitions / Diagrams
Analysis of the Thickening Agents in Automotive Greases by GC–MS  David Mayotte, Craig J. Donahue, and Cheryl A. Snyder
Describes a laboratory procedure for the identification of the thickening agents in lubricating greases by GCMS.
Mayotte, David; Donahue, Craig J.; Snyder, Cheryl A. J. Chem. Educ. 2006, 83, 902.
Applications of Chemistry |
Consumer Chemistry |
Gas Chromatography |
Industrial Chemistry |
Mass Spectrometry |
Separation Science |
Fatty Acids
Lubricating Grease: A Chemical Primer  Craig J. Donahue
This article provides an overview of the function, properties, composition, and preparation of lubricating grease
Donahue, Craig J. J. Chem. Educ. 2006, 83, 862.
Applications of Chemistry |
Industrial Chemistry |
Fatty Acids
Cholesterol and Plants  E. J. Behrman and Venkat Gopalan
Current textbooks give an inaccurate picture of the occurrence of cholesterol in plants and the role of plant sterols in the mammalian uptake of cholesterol.
Behrman, E. J.; Gopalan, Venkat. J. Chem. Educ. 2005, 82, 1791.
Metabolism |
Plant Chemistry |
Steroids
Making Usable, Quality Opaque or Transparent Soap  Suzanne T. Mabrouk
First-year and organic chemistry students will learn the chemistry of soap by making some of the eleven described formulations, which produce usable, quality bars of soap. Opaque and transparent soaps are made in two and three hours, respectively. With an introduction to formulation chemistry, organic chemistry students can devise a formulation to synthesize their own opaque soap. Many of the formulations use commonly-available fats and oils, while some formulations incorporate specialty fats and oils for therapeutic purposes, for example, to relieve dry skin or itching.
Mabrouk, Suzanne T. J. Chem. Educ. 2005, 82, 1534.
Colloids |
Consumer Chemistry |
Lipids |
Nonmajor Courses |
Applications of Chemistry |
Esters
Colors in Liquid Crystals  George Lisensky and Elizabeth Boatman
This activity is suitable for exploring relationships between color, wavelength, reflection, and transmission and illustrates how temperature changes the liquid crystal's Bragg reflection wavelength.
Lisensky, George; Boatman, Elizabeth. J. Chem. Educ. 2005, 82, 1360A.
Nanotechnology |
Phases / Phase Transitions / Diagrams |
Spectroscopy |
Fatty Acids
A Greener Approach for Measuring Colligative Properties  Sean M. McCarthy and Scott W. Gordon-Wylie
As a first step towards the greening of instructional laboratories, we present a new greener version of a laboratory procedure designed to measure colligative properties. The greener procedure substitutes the nontoxic, noncarcinogenic compounds stearic, myristic, lauric, and palmitic acids for the less benign aromatic compounds p-dichlorobenzene, benzil, biphenyl, naphthalene, and nitrotoluene. Achieving educational goals without the concomitant generation of chlorinated and aromatic wastes is shown here to be both possible and practical.
McCarthy, Sean M.; Gordon-Wylie, Scott W. J. Chem. Educ. 2005, 82, 116.
Green Chemistry |
Solutions / Solvents |
Fatty Acids
Lipid Extraction and Cholesterol Quantification: A Simple Protocol  M. Carmo Barreto
A fast and simple protocol for lipid extraction from egg yolk and walnut is presented. Students learn to extract total lipids from both sources and to assess the quantity of cholesterol in lipid extracts by the LiebermannBuchard method, in a semi-quantitative way. This experiment is easily done in a two-hour lab period, except for the evaporation of lipid extracts to dryness, which proceeds overnight and is weighed by the students the following day
Barreto, M. Carmo. J. Chem. Educ. 2005, 82, 103.
Applications of Chemistry |
Bioanalytical Chemistry |
Consumer Chemistry |
Lipids |
Natural Products |
Quantitative Analysis
Calories - Who's Counting?   JCE Editorial Staff
Students determine how many calories are released per gram when marshmallows and cashews burn and then compare the quantity of energy available from carbohydrates vs. fats.
JCE Editorial Staff . J. Chem. Educ. 2004, 81, 1440A.
Calorimetry / Thermochemistry |
Carbohydrates |
Lipids |
Consumer Chemistry |
Food Science |
Nutrition |
Fatty Acids
Chocolate: A Marvelous Natural Product of Chemistry  Ginger Tannenbaum
This article is a survey of chocolate from tree to table. After a brief introduction to the history of chocolate and how and where it is grown, the manufacturing process is examined, and the chemistry is explored. A bit of the jargon used in the industry is mentioned. Cocoa butter is a significant ingredient in chocolate, and an investigation of it introduces triglycerides, fatty acids, polymorphic behavior, and molecular packing of the fats in chocolate and how they affect the tempering process. There is a brief discussion of chocolate's non-Newtonian behavior and the resulting challenges presented in the manufacturing process.
Tannenbaum, Ginger. J. Chem. Educ. 2004, 81, 1131.
Natural Products |
Consumer Chemistry |
Food Science |
Fatty Acids
Three-Dimensional Model for Water: Magnets as Dipoles  Samuel H. Yalkowsky and Jennifer L. H. Johnson
Reply to comments on original article.
Yalkowsky, Samuel H.; Johnson, Jennifer L. H. J. Chem. Educ. 2004, 81, 34.
Aqueous Solution Chemistry |
Noncovalent Interactions |
Hydrogen Bonding |
Lipids |
Liquids |
Molecular Modeling |
Phases / Phase Transitions / Diagrams |
Solutions / Solvents |
Water / Water Chemistry
Three-Dimensional Model for Water: Magnets as Chemical Bonds  Roy W. Clark
Concerns over students confusing electrical and magnetic fields.
Clark, Roy W. J. Chem. Educ. 2004, 81, 34.
Aqueous Solution Chemistry |
Noncovalent Interactions |
Hydrogen Bonding |
Lipids |
Liquids |
Molecular Modeling |
Phases / Phase Transitions / Diagrams |
Solutions / Solvents |
Water / Water Chemistry
Classification of Vegetable Oils by Principal Component Analysis of FTIR Spectra  David A. Rusak, Leah M. Brown, and Scott D. Martin
Comparing unknown samples of vegetable oils to known samples using FTIR and principal component analysis (PCA) and nearest means classification (NMC).
Rusak, David A.; Brown, Leah M.; Martin, Scott D. J. Chem. Educ. 2003, 80, 541.
IR Spectroscopy |
Instrumental Methods |
Food Science |
Lipids |
Chemometrics |
Qualitative Analysis |
Fourier Transform Techniques |
Consumer Chemistry |
Applications of Chemistry
DeLorenzo's Four Interesting Mysteries Verified  Josefina Ma. Ferriols-Pavico
Results of experiments testing why women become intoxicated more easily than men, why alcohol consumption might enhance cigarettes' carcinogenic effects, why latex condoms with oil-based lubricants work better than latex condoms with water-based lubricants, and why red meat goes better with red wine and white meat with white wine?
Ferriols-Pavico, Josefina Ma. J. Chem. Educ. 2002, 79, 1217.
Lipids |
Learning Theories |
Alcohols |
Applications of Chemistry
A Three-Dimensional Model for Water  J. L. H. Johnson and S. H. Yalkowsky
Using Molymod spheres and magnets to simulate the structure and properties of water and aqueous systems.
Johnson, J. L. H.; Yalkowsky, S. H. J. Chem. Educ. 2002, 79, 1088.
Aqueous Solution Chemistry |
Covalent Bonding |
Lipids |
Liquids |
Solutions / Solvents |
Water / Water Chemistry |
Phases / Phase Transitions / Diagrams
Classroom Research: GC Studies of Linoleic and Linolenic Fatty Acids Found in French Fries  Janice P. Crowley, Kristen L. DeBoise, Megan R. Marshall, Hannah M. Shaffer, Sara Zafar, Kevin A. Jones, Nick R. Palko, Stephen M. Mitsch, Lindsay A. Sutton, Margaret Chang, Ilana Fromer, Jake Kraft, Jessica Meister, Amar Shah, Priscilla Tan, and James Whitchurch
Project in which students investigate the health effects of fatty acids and investigate the fatty acid content of French fries, as well as variables involved in the cooking of the fries.
Crowley, Janice P.; DeBoise, Kristen, L.; Marshall, Megan R.; Shaffer, Hannah M.; Zafar, Sara; Jones, Kevin A.; Palko, Nick R.; Mitsch, Stephen M.; Sutton, Lindsay A.; Chang, Margaret; Fromer, Ilana; Kraft, Jake; Meister, Jessica; Shah, Amar; Tan, Priscilla; Whitchurch, James. J. Chem. Educ. 2002, 79, 824.
Consumer Chemistry |
Synthesis |
Undergraduate Research |
Gas Chromatography |
Lipids |
Food Science |
Consumer Chemistry |
Applications of Chemistry |
Fatty Acids
b-Oxidation Wordsearch  Terry L. Helser
Puzzle with 36 names, terms, prefixes, and acronyms that describe lipid metabolism.
Helser, Terry L. J. Chem. Educ. 2001, 78, 483.
Metabolism |
Nomenclature / Units / Symbols |
Lipids
Lipid Wordsearch  Terry L. Helser
Wordsearch puzzle containing 37 names, terms, prefixes and acronyms that describe lipids.
Helser, Terry L. J. Chem. Educ. 2000, 77, 479.
Lipids |
Nomenclature / Units / Symbols
Synthesis of Exotic Soaps in the Chemistry Laboratory  Otto Phanstiel IV, Eric Dueno, and Queenie Xianghong Wang
A variety of different triglyceride sources ranging from Vietnamese garlic oil to a local restaurant's grill sludge were saponified to generate a series of exotic soaps. Students did not quantify their results, but described their products in terms of color, texture and odor.
Phanstiel, Otto, IV; Dueno, Eric; Wang, Queenie Xianghong. J. Chem. Educ. 1998, 75, 612.
Qualitative Analysis |
Carboxylic Acids |
Lipids |
Consumer Chemistry |
Applications of Chemistry |
Fatty Acids
The Membrane Analogy for Surface Tension in Liquids  Francisco J. Arnaíz
Students frequently have trouble envisioning the surface of a liquid to be like a thin membrane. To reinforce the membrane analogy for surface tension two simple experiments, easily performed with kitchen products, are suggested.
Arnaiz, Francisco J. J. Chem. Educ. 1997, 74, 1358.
Lipids |
Surface Science
Olestra? The Jury's Still Out  Ellin Doyle
Summary of information and sources on the topic of olestra, a fat substitute consisting of a mixture of sucrose polyesters.
Doyle, Ellin. J. Chem. Educ. 1997, 74, 370.
Consumer Chemistry |
Food Science |
Applications of Chemistry |
Fatty Acids
Viscosity of Common Seed and Vegetable Oils  C. Wes Fountain, Jeanne Jennings, Cheryl K. McKie, Patrice Oakman, Monty L. Fetterolf
A viscosity experiment is presented here that is designed around common seed and vegetable oils. With the importance of viscosity to foodstuffs and the importance of fatty acids to nutrition, an experiment using these common, recognizable oils has broad appeal.
Fountain, C. Wes; Jennings, Jeanne ; McKie, Cheryl K.; Oakman, Patrice; Fetterolf, Monty L. . J. Chem. Educ. 1997, 74, 224.
Physical Properties |
Food Science |
Fatty Acids
Biological Membranes: Function and Assembly  Kohlwein, Sepp D.
In this review we intend to summarize some of the methodology involved in biological membrane research and some of the recent developments in our understanding of how biological membranes are assembled and how they function.
Kohlwein, Sepp D. J. Chem. Educ. 1992, 69, 3.
Lipids
A less hazardous chromic acid substitute for cleaning glassware  Manske, Paul M.; Stimpfel, Teresa M.; Gershey, Edward L.
Evaluation of several common cleaning solutions for their ability to remove known amounts of baked-on lipid or protein from glassware.
Manske, Paul M.; Stimpfel, Teresa M.; Gershey, Edward L. J. Chem. Educ. 1990, 67, A280.
Laboratory Management |
Lipids |
Proteins / Peptides
Biochemistry laboratory for the freshman chemistry curriculum  Falk, Peter M.
Intended to introduce students to two important biochemical principles: the study of biomolecules and metabolism.
Falk, Peter M. J. Chem. Educ. 1989, 66, 944.
Metabolism |
Carbohydrates |
Lipids |
Proteins / Peptides |
Plant Chemistry
Chemistry of paint   Schuerman, George; Bruzan, Raymond
Preparing paint in the laboratory provides students with first-hand knowledge of paint chemistry and its manufacture.
Schuerman, George; Bruzan, Raymond J. Chem. Educ. 1989, 66, 327.
Applications of Chemistry |
Fatty Acids
When oil and water do not mix  Trammell, Gary L.
An introduction to the physics and chemistry of interfaces and lipids, and reactions in micelles.
Trammell, Gary L. J. Chem. Educ. 1987, 64, 1022.
Aqueous Solution Chemistry |
Water / Water Chemistry |
Solutions / Solvents |
Micelles |
Lipids
A demonstration of the transformation of a hydrophobic liquid to a partially hydrophilic semisolid  Nugent, James, F.
This demonstration models a reaction commonly used as industrial means for converting animal and vegetable fats and oils to food-grade emulsifiers.
Nugent, James, F. J. Chem. Educ. 1986, 63, 82.
Food Science |
Industrial Chemistry |
Applications of Chemistry |
Consumer Chemistry |
Fatty Acids
Biochemistry off the shelf  Wilson, Jerry L.
Rather than using animal sources for biochemistry experiments, non-animal sources are inexpensive, readily available, and require no special storage.
Wilson, Jerry L. J. Chem. Educ. 1985, 62, 796.
Enzymes |
Carbohydrates |
Lipids |
Metabolism
Saturated and unsaturated fats: An organic chemistry demonstration  Broniec, Rick
Distinguishing between saturated and unsaturated fats using NaOH and potassium permanganate.
Broniec, Rick J. Chem. Educ. 1985, 62, 320.
Lipids |
Fatty Acids
Nutrition and problem solving: Food for thought  Denio, Allen A.; Bennett, Charles R.
Calculating the number of Calories, carbohydrates, protein, and fat per dollar of various foods.
Denio, Allen A.; Bennett, Charles R. J. Chem. Educ. 1984, 61, 1076.
Nutrition |
Carbohydrates |
Proteins / Peptides |
Lipids |
Fatty Acids
The chemical composition of the cell  Holum, John R.
A broad outline of the chemical substances that occur in most cells.
Holum, John R. J. Chem. Educ. 1984, 61, 877.
Biological Cells |
Lipids |
Carbohydrates |
Proteins / Peptides
Accurate molecular dimensions from stearic acid monolayers  Lane, Charles A.; Burton, D. Edward; Crabb, Charles C.
Improvements to the fatty acid monolayer experiment to determine molecular dimensions.
Lane, Charles A.; Burton, D. Edward; Crabb, Charles C. J. Chem. Educ. 1984, 61, 815.
Molecular Properties / Structure |
Fatty Acids
How much cholesterol is in your body?  Chamizo G., Jose Antonio
Calculations involving the size and proportion of the body consisting of cholesterol.
Chamizo G., Jose Antonio J. Chem. Educ. 1982, 59, 151.
Nomenclature / Units / Symbols |
Lipids
The chemistry of cleaning  J. Chem Educ. Staff
The theory of detergency, soaps, and synthetic surfactants.
J. Chem Educ. Staff J. Chem. Educ. 1979, 56, 610.
Consumer Chemistry |
Aqueous Solution Chemistry |
Acids / Bases |
Lipids |
Fatty Acids
Selective solubility: "Like dissolves like"  Smith, Wayne L.
Azobenzene is a better analog of DDT than iodine in demonstrating the pesticide's solubility in fatty tissue.
Smith, Wayne L. J. Chem. Educ. 1977, 54, 228.
Precipitation / Solubility |
Solutions / Solvents |
Lipids
Molecular membrane model  Huebner, J. S.
Making a model of a lipid bilayer using polystyrene balls and pipe cleaners.
Huebner, J. S. J. Chem. Educ. 1977, 54, 171.
Membranes |
Lipids |
Molecular Modeling |
Proteins / Peptides |
Dyes / Pigments
Detection of butylated hydroxyanisole (BHA) in cooking oils  McKone, Harold T.
The author describes an experiment he uses in an Environmental Science course geared toward non-science majors.
McKone, Harold T. J. Chem. Educ. 1976, 53, 800.
Nonmajor Courses |
Food Science |
Chromatography |
Quantitative Analysis |
Fatty Acids
Questions [and] Answers  Campbell, J. A.
216-219. Four questions applying chemistry and their solutions.
Campbell, J. A. J. Chem. Educ. 1975, 52, 807.
Enrichment / Review Materials |
Enzymes |
Lipids |
Metabolism |
Fatty Acids
Questions [and] Answers  Campbell, J. A.
198-202. Five environmental and biochemical questions and their answers.
Campbell, J. A. J. Chem. Educ. 1975, 52, 520.
Enrichment / Review Materials |
Lipids |
Geochemistry |
Bioenergetics |
Natural Products |
Fatty Acids
Spot test for detection of saturated and unsaturated fatty acids  Singh, Eric J.
A 1% solution of copper sulfate can be used for the detection of saturated and unsaturated fatty acids.
Singh, Eric J. J. Chem. Educ. 1973, 50, 669.
Qualitative Analysis |
Fatty Acids
Determining the molecular weight of N-fatty acids by thin layer chromatography  Singh, Eric J.; Zuspan, Frederick P.
Simple procedure for determining the molecular weight of N-fatty acids by thin layer chromatography.
Singh, Eric J.; Zuspan, Frederick P. J. Chem. Educ. 1973, 50, 625.
Molecular Properties / Structure |
Physical Properties |
Thin Layer Chromatography |
Chromatography |
Fatty Acids
Questions [and] Answers  Campbell, J. A.
Six questions requiring an application of chemical principles.
Campbell, J. A. J. Chem. Educ. 1973, 50, 281.
Enrichment / Review Materials |
Lipids |
Gases |
Electrochemistry
Size of a molecule. Or what's in a shape?  Demchik, Michael J.; Demchik, Virginia C.
The authors describe an experiment which helps students understand why oleic acid is essentially insoluble in water.
Demchik, Michael J.; Demchik, Virginia C. J. Chem. Educ. 1971, 48, 770.
Lipids |
Molecular Properties / Structure |
Molecular Modeling |
Physical Properties |
Solutions / Solvents |
Fatty Acids