Organiclab2 - CHEM 2120 Expt4 EXTRACTION OF CINNAMALDEHYDE...

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CHEM 2120 Expt4 EXTRACTION OF CINNAMALDEHYDE FROM CINNAMON Introduction The purpose of this experiment is to extract cinnamaldehyde from cinnamon. The technique used to complete the extraction is steam distillation; the isolated cinnamaldehyde would be analyzed using TLC, and other qualitative tests: DNPH, Tollen’s and the Fehling’s. The procedure from this experiment was taken from the Chemistry 2120 Lab Manual, The University of Ontario Institute of Technology, winter 2006 Procedure The procedure from this experiment was taken from the Chemistry 2120 Lab Manual, The University of Ontario Institute of Technology, winter 2006. Results - The cinnamaldehyde was collected using the steam distillation. The temperature was 71.0ºC when it was removed from the Hickmann stillhead. Mass of cinnamon: 1.0550g Mass of crude cinnamaldehyde: 0.0094g - The amount of crude cinnamaldehyde that was collected is shown as a mass/mass percent with respect to the initial amount of cinnamon obtained that is 0.89% Table 1: DNPH, Tollen’s, and Fehling’s test Test Observation +/- Functional Group Identified/ Defining Feature DNPH Colour change to Orange + Aldehyde or Ketone Tollen Silver Mirror seen on bottom of test tube + Aldehyde Fehling No Colour change stayed Blue - Aromatic Aldehyde TLC Solvent: 20% ethyl acetate / hexanes - The TLC was carried out with the obtained cinnamaldehyde from the cinnamon. Three different spots were made: two from the obtained cinnamaldehyde (small
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Organiclab2 - CHEM 2120 Expt4 EXTRACTION OF CINNAMALDEHYDE...

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