Stevia has become rather widespread over a wide range of climatic location around the world and can apparently
be successfully grown under different cultivation condition, although often by seedling establishment in a
greenhouse before planting in the field. Stevia plant is easily contaminated during growth, development and
processing, and for this, an extensive research is needed to explore the characteristics of the heavy metal produced
by a plant of Stevia. The heavy metals produced from the herb and its toxicity of Stevia plant is not well documented
and scientific evidence is limited to establishing Stevia plant as a medicinal plant. Although there is a great concern
about heavy metal contamination of herbal raw materials, information from the World Health Organization (WHO)
regarding permissible limit is available only for Pb and Cd. Heavy metal accumulation of the Stevia rebaudiana
extract is dependent on an obtained heavy metals from the soil and water. Heavy metals from plant sources may be
also vary from place to place because soil heavy metals content varies geographically, thus, they have become the
subject of many research projects.
Stevia has become rather widespread over a wide range of climatic location around the world and can apparentlybe successfully grown under different cultivation condition, although often by seedling establishment in agreenhouse before planting in the field. Stevia plant is easily contaminated during growth, development andprocessing, and for this, an extensive research is needed to explore the characteristics of the heavy metal producedby a plant of Stevia. The heavy metals produced from the herb and its toxicity of Stevia plant is not well documentedand scientific evidence is limited to establishing Stevia plant as a medicinal plant. Although there is a great concernabout heavy metal contamination of herbal raw materials, information from the World Health Organization (WHO)regarding permissible limit is available only for Pb and Cd. Heavy metal accumulation of the Stevia rebaudianaextract is dependent on an obtained heavy metals from the soil and water. Heavy metals from plant sources may bealso vary from place to place because soil heavy metals content varies geographically, thus, they have become thesubject of many research projects.
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