浙江省鲜香菇重金属背景值及安全质量评价  

Studies on the Background Levels of Heavy Metal Contents and the Evaluation of Quality and Safety in Fresh Lentinus edodes from Zhejiang Province

作　　者：柴振林[1] 吴学谦[2] 魏海龙[2] 吴庆其 陈如楚 

机构地区：[1]浙江省林产品质量检测站,浙江杭州310023 [2]浙江省林业科学研究院,浙江杭州310023 [3]丽水市食用菌研究开发中心,浙江丽水323000

出　　处：《中国食用菌》2008年第4期31-33,共3页Edible Fungi of China

基　　金：浙江省重大科技攻关项目(项目编号2004C12009);浙江省重大科技重点项目(项目编号2004F12013和2004F12002)部分研究内容

摘　　要：在浙江香菇主产区抽样检测,对数据进行分析统计,首次提出了浙江省鲜香菇重金属背景值。统计结果显示浙江省鲜香菇重金属背景值分别为铅0.063mg.kg-1、镉0.110mg.kg-1、砷0.036mg.kg-1、汞0.011mg.kg-1。经与相关标准进行比较,鲜香菇中重金属指标还是相对安全的,但鲜香菇重金属含量明显高于一般蔬菜,尤其是镉和汞。香菇中的镉含量值得关注,香菇对重金属镉的富集能力较强,是鲜香菇质量安全控制的重点。香菇重金属含量与生产过程相关,选择适宜的香菇产地环境条件,采用富集能力低的香菇品种、改良栽培基质配方、改革栽培技术能有效降低香菇中重金属含量。Background levels of heavy metal contents in fresh Lentinus edodes from Zhejiang Province were firstly reported after random sampling in main supplying areas and analyzing resulted spectrometric data statistically. Determined levels were 0.063mg·kg^-1for Pd, 0.110mg·kg^-1 for Cd, 0.036mg·kg^-1 for As, and 0.011mg·kg^-1 for Hg, respectively. The study was done through in-field sampling at reliable growing farms, followed by the standard lab analyses, and the statistical treatment with proved methods. Therefore, obtained values were considered representative and trustworthy. Compared to related national and industrial quality standards, levels of heavy metal contents in fresh Lentinus edodes from Zhejiang Province were safe and in low end. However, they were apparently higher than the levels of heavy metal contents found in common vegetables; especially for Cd and Hg. Because of the high bioaccumulation tendency of Lentinus edodes toward metal Cd, Cd level in fresh Lentinus edodes was noteworthy and should be the focus regarding to quality controls. The levels of heavy metal contents in fresh Lentinus edodes were also related to cultivation practice. Therefore, choosing appropriate environment for cultivation areas, using species with low bioaccumulation tendency toward heavy metal elements, and improving the components of cultivating base and growing techniques could reduce the levels of heavy metal contents in fresh Lentinus edodes.

关 键 词：浙江省 鲜香菇 重金属 背景值 安全质量 

分 类 号：S646.12[农业科学—蔬菜学]