Study on Aluminium Contamination in Mettur Soil and its Subsequent Uptake by Medicinal Plants

Study on Aluminium Contamination in Mettur Soil and its Subsequent Uptake by Medicinal Plants Kalpana Palani School of Basic Sciences, Vels Institute of Science, Technology and Advanced Studies (VISTAS), Chennai, India. Krishnamurthy Balasubramanian National Agro Foundation, Taramani, Chennai, Tamil Nadu 600113, India. R. A. Kalaivani School of Basic Sciences, Vels Institute of Science, Technology and Advanced Studies (VISTAS), Chennai, India. https://orcid.org/0000-0003-4745-4651

Nowadays, the use of medicinal plants for disease treatment has been limited due to widely prevailing toxicity of medicinal plants and their source soil. The major reason for the toxicity in plants might be due to their mineral and chemical content and also related with the toxic materials present in the source soil. The aim of this study was to assess the Aluminum contamination in Mettur, an industrial town of Tamil Nadu, India which has many Al industries. Total Al content in the soil of the region where medicinal plants were cultivated was found to be 16700 mg kg-1. Further, Al content in commonly used medicinal plants Centella asiatica, Bacopa monneri and Euphorbia hirta grown in Al polluted soil was studied. The Al concentration of the medicinal plants ranged from 449 to 801 mg kg-1. All the three plants were found to accumulate level of Al which is above the maximum permissible limits prescribed by World Health Organization and thus, it may cause Al toxicity among the consumers of herbal medicines. From the results of the present study, it is inferred that the medicinal plants used for the human consumption or disease management should be collected from clean environment and processed carefully.
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