Related Experiment Videos
Fluoride content in khat (Catha edulis) chewing leaves
1Department of Restorative, Faculty of Dentistry, Jordan University of Science and Technology, Irbid.
Archives of Oral Biology
|April 13, 2000
Summary
This study investigated fluoride levels in khat leaves. Findings indicate negligible fluoride content in khat, debunking previous suggestions of high concentrations.
Area of Science:
- Oral Health
- Analytical Chemistry
- Pharmacognosy
Background:
- Khat (qat) leaves are widely chewed for their psychostimulant properties.
- There are unconfirmed reports suggesting high fluoride (F) concentrations in khat leaves.
Purpose of the Study:
- To accurately quantify fluoride levels in khat leaves.
- To determine fluoride release during chewing and in vitro saliva exposure.
Main Methods:
- Fluoride assay using an F(-)-electrode coupled to an ion analyser.
- Measurement of fluoride leached into water and saliva.
- Analysis of total fluoride in dried leaves and ash via microdiffusion.
Main Results:
- Negligible fluoride detected in khat extracts (<0.02 microg F/ml).
- Low fluoride levels observed in saliva after chewing (0.06 microg F/ml).
- Total fluoride content in dried leaves and ash was minimal (0.93 and 2.07 microg F/g, respectively).
Conclusions:
- Khat leaves contain negligible amounts of fluoride.
- The study refutes claims of high fluoride content in khat.
- Findings have implications for oral health assessments related to khat consumption.