Identification of Secondary Metabolites in Citrus Fruits. Jean-Michel Lavoie, Esteban Chornet, and André Pelletier describe an experiment for analytical or organic undergraduate students in which a simple extraction is used to analyze qualitatively and quantitatively monoterpenes in essential oils from citrus fruit peels. Among the fruit tested—limes, grapefruits, and oranges—all showed a high concentration of (R)-limonene, a monoterpenoid commonly found in these fruits. For students, this experiment may be a first contact with the analysis of plant extracts as well as an introduction to the biochemistry of monoterpenes.
Photo by Scott Bauer, courtesy of the United States Department of Agriculture and the Agricultural Research Service Information Staff (http://www.ars.usda.gov/is/graphics/photos/k7226-29.htm).
The cover was designed by Betsy True.
Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first.
Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants.