Cadmium, mercury and lead in medicinal herbs in Brazil
Cadmium, mercury and lead in medicinal herbs in Brazil
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DOI：
10.1016/j.fct.2003.11.004
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发表时间：
2004-04-01
影响因子：
4.3
通讯作者：
Machado, LL
中科院分区：
文献类型：
--
作者：
Caldas, ED;Machado, LL
对巴西使用的中草药样品，经过硝酸消化后，用原子吸收分光光度法测定了镉、汞和铅的含量。对银杏(Ginkgo Biloba)15个样品、芹菜科(Maytenus Ilicifolia)13个样品、沙棘(Rhamnus Purshiana)14个样品、茄子(Solanum Melongena)13个样品、七叶树(Aesculus Hipoastanum)15个样品、巴西人参(Pffafia Regata)13个样品、积雪草(Helcotyle Asiatica)17个样品、瓜拉果(Paullinia Cupana)13个样品、洋蓟(Cynara Scolymus)12个样品和小球藻(Chlorella Pyrenoidosa)5个样品进行了分析。朝鲜蓟、茄子和瓜拉纳样品中均未检出镉、汞和铅(定量限分别为0.20、0.01和2.0 mg/kg)。其他中草药样本的镉含量高达每克0.74杯，汞含量则高达每克0.087杯。其中3个马栗样本的铅含量分别为153、156和1 480杯，而其他经分析的样本的最高铅含量为22杯铅。估计从食用马栗所摄取的铅达到每周暂定容许摄入量的440%，如果长期服用该药物，消费者可能会关注到这一点。通过草药接触镉和汞似乎不会对健康造成影响。(C)2003爱思唯尔有限公司。保留所有权利。
Samples of herbal medicine used in Brazil were analyzed, after nitric digestion, for the content of cadmium, mercury and lead, by atomic absorption spectrophotometry. Fifteen samples of ginkgo biloba (Ginkgo biloba), 13 of celastraceae (Maytenus ilicifolia), 14 of cascara buckthorn (Rhamnus purshiana), 13 of eggplant (Solanum melongena), 15 of horse chestnut (Aesculus hippocastanum), 13 of Brazilian ginseng (Pffafia glomerata), 17 of centella asiatic (Hydrocotyle asiatica), 13 of guarana (Paullinia cupana), 12 of artichoke (Cynara scolymus) and five samples of chlorella (Chlorella pyrenoidosa) were analyzed. Cadmium, mercury and lead were not detected (limit of quantifications of 0.20, 0.01 and 2.0 mg/kg, respectively) in any sample of artichoke, eggplant and guarana. Cadmium was found in samples of the other medicinal herbs at levels up to 0.74 mug/g and mercury up to 0.087 mug/g. Three samples of horse chestnut contained 153, 156 and 1480 mug Pb/g, while the highest concentration found in the other samples analyzed was 22 mug Pb/g. The estimated lead intake through the consumption of horse chestnut reached 440% of Provisional Tolerable Weekly Intake (PTWI), and might be of concern to consumers if the medicine was taken on a long-term basis. Cadmium and mercury exposure through the herbal medicines does not appear to be of health concern. (C) 2003 Elsevier Ltd. All rights reserved.