ERIC Number: EJ1215737
Record Type: Journal
Publication Date: 2019-May
Pages: 6
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: N/A
Isolation and Derivatization of Sucralose from an Artificial Sweetener to Provide a Hands-On Laboratory Experiment Emphasizing Synthesis and Purification
Monsen, Paige J.; Luzzio, Frederick A.
Journal of Chemical Education, v96 n5 p992-997 May 2019
A laboratory experiment is detailed that entails the separation and derivatization of the artificial sweetener sucralose from a commercially available sweetener mixture. The experiment utilizes 1 g packets of a sucralose-based artificial sweetener and involves the separation of the synthetic sweetener from the more polar bulk additives by differential solubility. The semipure trichlorosucrose is then acetylated with acetic anhydride and purified using extraction and mini-column chromatography. The isolation, extraction, and chromatography can be followed by thin-layer chromatography in conjunction with [superscript 1]H and [superscript 13]C NMR spectroscopy for ascertaining purity during the process as well as final structural confirmation. The experiment is designed to utilize two 4 h laboratory periods, including any spectral work, and employs the laboratory apparatuses found in most undergraduate organic laboratories. During the experiment, the students learn separation by solubility, filtration, extraction, thin-layer and column chromatography, and acetylation of a carbohydrate to make a characterizable derivative. The usefulness of obtaining [superscript 1]H and [superscript 13]C NMR spectra as applied to structural analysis of carbohydrates and their derivatives is demonstrated.
Descriptors: Hands on Science, Laboratory Experiments, Science Experiments, Chemistry, Undergraduate Students, Organic Chemistry, College Science, Science Instruction
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: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A