Subcellular distribution and chemical forms of cadmium in the edible seaweed, Porphyra yezoensis.
Food Chem
; 168: 48-54, 2015 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-25172682
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 5.0mgl(-1)) for up to 96h. 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 1M 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% HAC increased with exposure to increasing concentrations of Cd and over time. Cell wall deposition and forming of precipitates with phosphate may be a key strategy to reduce Cd toxicity in P. yezoensis.
Palavras-chave
Acetic acid (PubChem CID: 176); Cadmium; Cadmium dichloride (PubChem CID: 24633); Cadmium ion (PubChem CID: 31193); Cadmium oxalate (PubChem CID: 3083647); Cadmium phosphates (PubChem CID: 26060); Chemical form; Dithiothreitol (PubChem CID: 19001); Ethanol (PubChem CID: 702); Organo-ligands (PubChem CID: 11403475); Porphyra yezoensis; Sodium chloride (PubChem CID: 5234); Subcellular distribution; Sucrose (PubChem CID: 5988); Tolerance mechanism
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Alga Marinha
/
Cádmio
/
Contaminação de Alimentos
/
Porphyra
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article