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首页> 美国卫生研究院文献>SpringerPlus >Investigation of heavy metals in frequently utilized medicinal plants collected from environmentally diverse locations of north western India
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Investigation of heavy metals in frequently utilized medicinal plants collected from environmentally diverse locations of north western India

机译：调查从印度西北部环境不同的地点收集的常用药用植物中的重金属

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The increasing prevalence of environmental pollution, especially soil contamination with heavy metals has led to their uptake in the human food chains through plant parts. Accumulation and magnification of heavy metals in human tissues through consumption of herbal remedies can cause hazardous impacts on health. Therefore, chemical profiling of nine heavy metals (Mn, Cr, Pb, Fe, Cd, Co, Zn, Ni and Hg) was undertaken in stem and leaf samples of ten medicinal plants (Acacia nilotica, Bacopa monnieri, Commiphora wightii, Ficus religiosa, Glycyrrhiza glabra, Hemidesmus indicus, Salvadora oleoides, Terminalia bellirica, Terminalia chebula and Withania somnifera) collected from environmentally diverse regions of Haryana and Rajasthan states in North-Western India. Concentration of all heavy metals, except Cr, was within permissible limits in the tested stem and leaf samples. Leaf samples had consistently more Cr compared to respective stem samples with highest concentration in leaf samples of Bacopa monnieri (13.19 ± 0.0480 ppm) and stem samples of Withania somnifera (4.93 ± 0.0185 ppm) both collected from Bahadurgarh (heavy industrial area), Haryana. This amount was beyond the permissible limit of 2.0 ppm defined by WHO for raw herbal material. Other two most perilous metals Pb (2.64 ± 0.0260) and Cd (0.04 ± 0.0274) were also recorded in Bahadurgarh region, although below permissible limits. Concentration of Hg remained below detectable levels in all the leaf and stem samples tested. These results suggested that cultivation of medicinal plants and other dietary herbs should be curtailed near environmentally polluted especially industrial areas for avoidance of health hazards.
机译：环境污染，特别是土壤重金属污染的流行日益增加，导致其通过植物部分进入人类食物链。食用草药会导致人体组织中重金属的积累和放大，从而对健康造成危害。因此，对十种药用植物（阿拉伯金合欢，Bacopa monnieri，Commiphora wightii，Ficus religiosa）的茎和叶样品中的九种重金属（Mn，Cr，Pb，Fe，Cd，Co，Zn，Ni和Hg）进行了化学分析，印度甘草，印度甘草（Hemidesmus indicus），油菜（Salvadora oleoides），榄仁（Terminalia bellirica），榄仁（Terminalia chebula）和茄属（Withania somnifera）从印度西北部哈里亚纳邦和拉贾斯坦邦的环境不同地区收集。除铬外，所有重金属的浓度均在被测茎和叶样品的允许范围内。与分别从哈里亚纳邦重工业区巴哈杜加（Bahadurgarh）（重工业区）采集的百古草（Bacopa monnieri）（13.19±0.0480 ppm）的叶子样品和Withania somnifera（4.93±±0.0185 ppm）的茎样品中的最高浓度相比，叶子样品的Cr含量始终较高。该数量超出了WHO所规定的原始草药原料的2.0 ppm限制。在巴哈杜加地区也记录了其他两种最危险的金属Pb（2.64±±0.0260）和Cd（0.04±±0.0274），尽管低于允许的范围。在所有测试的叶和茎样品中，Hg的浓度均保持在可检测水平以下。这些结果表明，应在环境污染特别是工业区附近减少药用植物和其他饮食用药的种植，以避免危害健康。

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