ERIC Number: EJ1016969
Record Type: Journal
Publication Date: 2013-Jun
Abstractor: As Provided
Reference Count: 37
Plant Pigment Identification: A Classroom and Outreach Activity
Garber, Kathleen C. A.; Odendaal, Antoinette Y.; Carlson, Erin E.
Journal of Chemical Education, v90 n6 p755-759 Jun 2013
Anthocyanins are a class of pigments responsible for the bright colors of many flowers, fruits, and vegetables typically resulting in shades of red, blue, and purple. Students were asked to perform an activity to enable them to identify which anthocyanin was present in one of several possible plant materials through a hands-on activity. Students extracted the pigments from the biological sources and obtained color profiles by altering the pH of the biological extracts. These extracts were compared to standards of anthocyanin pigments so that students could deduce which pigment was present in the plant material that they had selected. This activity interrelates several chemical concepts and provides a link between chemical and biological sciences.
Descriptors: Science Instruction, Chemistry, Outreach Programs, Inquiry, Molecular Structure, Plants (Botany), Elementary School Science, Elementary Schools, Secondary School Science, Middle Schools, Color, Science Experiments
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: firstname.lastname@example.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Elementary Education; Middle Schools
Authoring Institution: N/A