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Cadmium in Jamaican bush teas / El cadmio en las tisanas Jamaicanas
Hoo Fung, LA; Rattray, VR; Lalor, GC.
  • Hoo Fung, LA; International Centre for Environmental and Nuclear Sciences. JM
  • Rattray, VR; International Centre for Environmental and Nuclear Sciences. JM
  • Lalor, GC; International Centre for Environmental and Nuclear Sciences. JM
West Indian med. j ; 63(1): 26-28, Jan. 2014. map, tab
Article in English | LILACS | ID: biblio-1045782
ABSTRACT
Samples of Jamaican plants used as bush teas were collected from households in high soil-cadmium (Cd) 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 6.85 µg/g for total Cd, between 1 and 15% of which was extracted with a hot water brew. One cup (200 ml) of the teas examined was found to contain < 0.04-1.18 µg of Cd and would contribute 0.1 - 0.3 µg 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 theWorld 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.
RESUMEN
Muestras de plantas jamaicanas utilizadas en las tisanas o tés herbales, fueron recogidas de los hogares en zonas de Jamaica central, donde el suelo presenta un alto contenido de cadmio (Cd). Las muestras fueron analizadas mediante espectrofotometría de absorción atómica con horno de grafito para investigar el contenido total de cadmio así como el cadmio extraíble con una infusión de agua caliente, al preparar infusiones para el consumo humano, y determinar su contribución a la exposición al cadmio dietético. Las concentraciones fluctuaron de < 0.03 a 6.85 µg/g para el Cd total, extrayéndose entre el 1 y el 15% de este con una infusión de agua caliente. Una taza (200 ml) de las tisanas examinadas contenía < 0,04 - 1.18 µg de Cd, lo cual contribuiría 0.1 - 0.3 µg de Cd al consumo dietético de una persona. Esta cantidad se halla significativamente por debajo de la "Ingesta semanal tolerable provisional" (PTWI por sus siglas en inglés) establecidas en 7 µg Cd/kg peso corporal por la Organización Mundial de la Salud (OMS). Si bien esto sugiere que el consumo de tisanas no contribuye significativamente al PTWI, algunas de las infusiones examinadas exceden la recomendación de la OMS de menos de 0.3 mg/kg Cd para las plantas medicinales.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Cadmium / Teas, Herbal Country/Region as subject: English Caribbean / Jamaica Language: English Journal: West Indian med. j Journal subject: Medicine Year: 2014 Type: Article Affiliation country: Jamaica Institution/Affiliation country: International Centre for Environmental and Nuclear Sciences/JM

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Full text: Available Index: LILACS (Americas) Main subject: Cadmium / Teas, Herbal Country/Region as subject: English Caribbean / Jamaica Language: English Journal: West Indian med. j Journal subject: Medicine Year: 2014 Type: Article Affiliation country: Jamaica Institution/Affiliation country: International Centre for Environmental and Nuclear Sciences/JM