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首页> 外文期刊>Chemical Science International Journal >Analysis and Determination of Polyphenol and Iron Concentrations in Some Selected Seaweed Species using UV-Vis
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Analysis and Determination of Polyphenol and Iron Concentrations in Some Selected Seaweed Species using UV-Vis

机译：使用UV-VIS的一些选定海藻物种中多酚和铁浓度的分析与测定

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Seaweeds readily absorb heavy metals that are present in their environment, because of this; they are an effective way of monitoring heavy metal pollution in an area. The metal that is absorbed can be damaging to the seaweed cell walls. Seaweeds have evolved over time to have excellent antioxidant systems to combat this damage. One antioxidant they produce is polyphenol, a chemical molecule containing many phenol rings that bind to metals and keep them from the damaging the cell walls. They have been shown to be linked to the health benefits of red wine, fruit and vegetables. Samples of different species of seaweed from the Bangor area were collected, processed and analysed for their iron and polyphenol concentrations. Samples were collected from multiple points along the Bangor? coastline,? they? were? dried? and? processed? into? a? fine,? dry? powder.? The iron concentrations were? analysed? by? Atomic? Absorption? Spectroscopy? after? digestion by HNO3. Different species were analysed for the iron and polyphenol content. The whole of the algae was analysed, as well as the nodules and the rest (stipe and blades). The polyphenol concentrations were analysed by a colourimetric assay using the Ragan and Glombitza method and quantified by UV/Vis spectroscopy. Different species were tested in order to see if the concentrations of iron and polyphenol change between species. Different parts of the seaweed were also tested to see where the higher concentrations of the metals were located. Iron concentration statistically significantly changed between all species with the concentrations ranging from 58.0 ± 3.5 mg/Kg to 796.0 ± 10.6 mg/Kg. The Polyphenol concentration changed statistically significantly between some species, but statistically not significant between others. Polyphenol concentration ranged from 63.7 ± 0.3 mg (g dw)-1 to 202.1 ± 6.7 mg (g dw)-1.
机译：海藻易于吸收环境中存在的重金属，因为这是;它们是一种在一个地区监测重金属污染的有效途径。被吸收的金属可能对海藻细胞壁造成损害。海藻随着时间的推移，有优异的抗氧化系统来打击这种损伤。它们产生的一种抗氧化剂是多酚，一种含有许多与金属结合的酚环的化学分子，并将它们从损坏的细胞壁中保持。他们已被证明与红酒，水果和蔬菜的健康益处相关联。收集，加工和分析它们的铁和多酚浓度的不同种类海藻的样品。沿着鼠的多个点收集样品？海岸线，？他们？是？干？和？处理？进入？一种？美好的，？干燥？粉末。？铁浓度是？分析？经过？原子？吸收？光谱学？后？用hnO3消化。分析了钢铁和多酚含量的不同物种。整个藻类被分析，以及结节和其余的（柄和叶片）。使用羊毛和胶凝胶法通过Colourecetric测定分析多酚浓度，并通过UV / Vis光谱量化。测试了不同的物种，以便观察铁和多酚在物种之间发生变化的浓度。还测试了海藻的不同部位，以了解较高浓度的金属位于何处。在所有物种之间统计学上显着改变的铁浓度范围为58.0±3.5mg / kg至796.0±10.6mg / kg。多酚浓度在某些物种之间有统计学显着变化，但在其余部分之间具有统计学上不显着。聚酚浓度范围为63.7±0.3mg（g dw）-1至202.1±6.7mg（g dw）-1。

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