| Titre |
Herbal teas heavy metal evaluation with renal function assessment in regular consumers in Benin |
| Auteurs |
ALLABI AUREL CONSTANT EUSTACHE [1],
Adounkpe Ferdinand [2],
|
| Journal: |
Journal of Toxicology and Environmental Health Sciences |
| Catégorie Journal: |
Internationale |
| Impact factor: |
0.85 |
| Volume Journal: |
9 |
| DOI: |
10.5897/JTEHS2016.0378 |
| Resume |
Herbal teas are openly sold in markets and main streets of big cities like Cotonou in Benin. Most people
treat themselves at low cost with wide variety of herbal plants with proven therapeutic properties. The
purpose of this research was to evaluate the content of heavy metals in herbal teas sold daily in
Cotonou. In addition, we would evaluate if this heavy metal content of herbal teas could affect the renal
function of regular consumers. Therefore, herbal teas samples were collected from selected sellers at
well-known places. Samples’ analyses were done by reverse anodic stripping voltammetry with the
Metalyser HM 3000 coupled to PC 101 NT pump. Biological markers of kidney failure in blood and urine
of regular consumers were also assessed. Renal creatinine clearance and albuminuria were measured,
the ratio of micro-albuminuria/creatininuria was calculated, and then red and white blood cells were
counted. The results indicate that 7.69 and 30.77% of the herbal teas samples displayed an abnormal
high concentration in cadmium (Cd) and lead (Pb) concentration, respectively. Statistical significant
difference was found between the analyzed herbal tea samples in regard to Cd and Pb content (P ˂ 0.01).
No obvious biological sign of severe kidney damage has been noted among regular consumers using
their blood and urine samples. Only 8.60% of them had clearances between 60 and 89 ml/min/1.73 m2
with mild kidney failure. This study indicates that some herbal teas contain toxic chemicals such as Cd
and Pb over recommended limits of 3 and 10 μg/L, respectively. The regular consumption of these
herbal teas could be health threatening for the population. |
| Mots clés |
Herbal teas, heavy metals, environmental pollution, human renal function, anodic stripping
voltammetry. |
| Pages |
23 - 28 |
| Fichier |
 (PDF) |