Subcellular distribution and chemical forms of cadmium in the edible seaweed, Porphyra yezoensis

文献类型： 外文期刊

第一作者： Zhao, Yanfang

作者： Zhao, Yanfang;Shang, Derong;Ning, Jinsong;Zhai, Yuxiu;Sheng, Xiaofeng;Ding, Haiyan;Wu, Jifa

作者机构：

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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