不同灵芝重金属含量及其水提取转移率分析

Analysis on the Content and Transfer Rate of Heavy Metal by Water Extracting from Different Kinds of Ganoderma Lucidum

目的:测定灵芝药材、灵芝提取物的重金属含量,研究不同产地灵芝药材重金属含量的差异性以及灵芝药材水提取的重金属转移率情况。方法:以山东省及安徽省两个产地共20批次的灵芝为原料,通过电感耦合等离子体质谱仪对灵芝药材及灵芝水提取物的重金属元素铅(Pb)、镉(Cd)、砷(As)、汞(Hg)和铜(Cu)进行检测。结果:所有灵芝药材的重金属元素Pb、Cd、As、Hg和Cu的含量均低于进出口绿色行业标准,山东灵芝药材的Pb、As及Cu平均含量高于安徽灵芝。灵芝重金属水提取转移率从高到低依次为As>Pb>Cd>Hg>Cu,As的提取转移率高达80%。结论:灵芝药材的重金属As是影响灵芝食用安全性的重要因素,重金属Pb及Cd的提取转移率与产地有关。

Objective:To determine the content of heavy metals in Ganoderma lucidum and Ganoderma lucidum extract,and study the difference of the content of heavy metals in Ganoderma lucidum from different producing areas,as well as the transfer rate of heavy metals in water extraction of Ganoderma lucidum.Method:Using 20 batches of Ganoderma lucidum from Shandong and Anhui as raw materials,the heavy metal elements Pb,Cd,As,Hg and Cu in Ganoderma lucidum and its water extract were detected by ICP-MS.Result:The contents of heavy metal elements of Pb,Cd,As,Hg and Cu in twenty batches of ganoderma lucidum from Anhui and Shandong are lower than the green standards for import and export,and the average content of Pb,As and Cu in Shandong Ganoderma lucidum is higher than that of Anhui Ganoderma.The transfer rate of Ganoderma lucidum heavy metal extraction from high to low is As>Pb>Cd>Hg>Cu,and the transfer rate of heavy metal As extraction is as high as 80%.Conclusion:The transfer rate of heavy metals As is an important factor affecting the edible safety of Ganoderma lucidum.The transfer rate of Ganoderma lucidum heavy metal Pb and Cd extraction is related to the origin.