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Cadmium in Jamaican Bush Teas

Issue: 
DOI: 
10.7727/wimj.2012.322
Pages: 
26–8
ABSTRACT
 
Samples of Jamaican plants used as bush teas were collected from households in high soil- cadmium areas of central Jamaica and analysed by graphite furnace atomic absorption spectrophotometry for total cadmium and for cadmium extractable with a hot water brew as prepared for human consumption to determine their contribution to dietary cadmium exposure. The concentrations ranged from < 0.03 to 6.85g/g for total Cd, between one and 15% of which was extracted with a hot water brew. One cup (200ml) of the teas examined was found to contain < 0.04–1.18 g of Cd and would contribute 0.1–0.3 g of Cd to a person’s dietary intake. This is significantly below the provisional tolerable weekly intake (PTWI) of 7 μg Cd/ kg body weight established by the World Health Organization (WHO). While this suggests that bush tea consumption does not contribute significantly to the PTWI, some of the teas examined exceed the WHO recommendation of less than 0.3 mg/kg Cd for medicinal plants.
Accepted: 
24 Jun, 2014
Revised: 
06 Jun, 2014
PDF Attachment: 
e-Published: 08 Apr, 2014
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