Subcellular distribution and chemical forms of cadmium in the edible seaweed, Porphyra yezoensis
文献类型： 外文期刊
作者： Zhao, Yanfang 1 ; Wu, Jifa 2 ; Shang, Derong 1 ; Ning, Jinsong 1 ; Zhai, Yuxiu 1 ; Sheng, Xiaofeng 1 ; Ding, Haiyan 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fishery Res Inst, Qingdao 266071, Peoples R China
2.Ocean & Fishery Bur Huangdao Dist Qingdao City, Qingdao 265400, Peoples R China
关键词： Porphyra yezoensis;Cadmium;Subcellular distribution;Chemical form;Tolerance mechanism
期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）
ISSN： 0308-8146
年卷期： 2015 年 168 卷
页码：
收录情况： SCI
摘要： The subcellular distribution and chemical forms of Cd were investigated in the edible seaweed, Porphyra yezoensis. The seaweed was exposed to different Cd concentrations (0.01, 0.05, 0.1, 0.5, 1.0 and 5.0 mg l(-1)) for up to 96 h. In both the controls (no Cd added) and treatment groups, 41.2-79.2% of Cd was localised in the cell wall, and the proportion of Cd in the cell wall increased with increasing concentrations of Cd and exposure time. In the control groups, 74.8% of Cd was extracted by 1 M NaCl, followed by 2% acetic acid, HAC (18.9%). In the treatment groups, most Cd was extracted by 2% HAC. The proportion of Cd extracted by 2% MAC increased with exposure to increasing concentrations of Cd and overtime. Cell wall deposition and forming of precipitates with phosphate may be a key strategy to reduce Cd toxicity in P. yezoensis. (C) 2014 Elsevier Ltd. All rights reserved.
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