摘要
研究姬松茸(Agaricus blazei Murrill)对有害重金属镉(Cd)的吸收富集规律,筛选低积累镉的姬松茸菌株,通过在培养料中添加有益金属元素来控制姬松茸子实体中的镉含量。共做两次姬松茸栽培试验,试验结果表明,姬松茸-培养料系统中镉的吸收富集规律为Y=65.308X+3.129(X、Y分别为培养料、姬松茸子实体中镉的含量),相关系数R2=0.9309。说明姬松茸对重金属镉的富集能力很强,富集系数65.235～108.135,说明培养料中镉含量对子实体中镉含量存在较大影响。比较7个姬松茸菌株(0号、1号、2号、3号、5号、8号和13号)对镉的吸收富集试验,结果姬松茸1号对镉的吸收富集作用最低,比镉积累最多的姬松茸0号菌株的镉含量低61.11%。当培养料中添加有益金属元素Cu2+、Fe2+、Ca2+的浓度比例为3mg/kg:3mg/kg:3%时,降低姬松茸产品中镉的效果最好,镉的含量比对照低35.21%。
The law of absorption and accumulation of Agaricus Blazei Murrill to harmful heavy melal（Cd）,and control technique of decreasing Cd content in fruiting body were studied in this paper.The heavy metal Cadmium（Cd） was added into the culture medium of Agaricus Blazei Murrill in order to study the absorption and accumulation.The results showed that the law（correlation equation） of Cd absorption and accumulation was Y=65.308X＋3.129（R2=0.9309）,here X was the Cd content in culture medium and Y was the Cd content in fruiting body,When Y=5.0 mg/kg,the critical content X=0.0286 mg/kg.It showed that Agaricus Blazei Murrill had a very high absorption ability to heavy metal Cd absorption coefficient was reached to 65.235～108.135.In addition,seven different strains were investigated about Cd absorption and accumulation,and Agaricus Blazei strain No.1 showed the lowest accumulation with Cd,so Agaricus Blazei strain No.1 could be chosen as the optimal selection strain.The nutrient elements were also added into the culture medium to decrease the effective concentration of Cd.When the concentrations of the three nutrient elements Cu2＋,Fe2＋ and Ca2＋ were 3 mg/kg,3 mg/kg and 3%,it reached the best decreasing effect,about 35.21% down compared with no nutrient element added.
出处
《中国食品学报》
EI
CAS
CSCD
北大核心
2010年第4期152-158,共7页
Journal of Chinese Institute Of Food Science and Technology
基金
浙江省科技攻关计划项目(No.2006C22G4010112)
关键词
姬松茸
重金属
镉
培养料
吸收富集
Agaricus Blazei Murrill
heavy metal
Cd
culture medium
absorption and accumulation
