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Metals in New Zealand <i>Undaria pinnatifida</i>(Wakame)

Metals in New Zealand <i>Undaria pinnatifida</i>(Wakame)

作     者:Leo Hau John Robertson William Lindsey White 

作者机构:Institute of Applied Ecology New Zealand School of Applied Sciences Auckland University of Technology Auckland New Zealand 

出 版 物:《Open Journal of Marine Science》 (海洋科学期刊(英文))

年 卷 期:2014年第4卷第3期

页      面:163-173页

学科分类:1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

主  题:Metals Undaria pinnatifida Wakame 

摘      要:Undaria pinnatifida, Wakame is a popular edible seaweed in its native Asia and was first recorded in New Zealand in Wellington Harbor in 1987. It is classified as an unwanted species under the Biosecurity Act 1993, but there is growing interest in harvesting this seaweed for human consumption. The aim of this study was to evaluate the concentrations of metals in U. pinnatifida from several locations (Marlborough Sounds and Wellington harbor) and across seasons. In brief, the highest monthly mean concentration of metals found in New Zealand wild U. pinnatifida was Ca (16.97g·kg-1), K (48.48 g·kg-1), Mg (9.47 g·kg-1), P (12.05 g·kg-1), Cr (1.04 mg·kg-1), Cu (3.78 mg·kg-1), Mn (14.61 mg·kg-1), Ni (2.78 mg·kg-1), Se (0.83 mg·kg-1), Zn (35.03 mg·kg-1), As (46.71 mg·kg-1), Cd (2.91 mg·kg-1), Hg (0.042 mg·kg-1) and Pb (0.31 mg·kg-1). These results showed that New Zealand U. pinnatifida is a good source of the nutritionally important minerals calcium, magnesium, potassium and phosphorus. They also contained trace amounts of minerals such as chromium, copper, manganese, nickel, selenium and zinc. Contaminants such as arsenic, cadmium, mercury and lead were found at very low, safe, levels.

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