PDF(Pubmed)
Abstract：
Ascophyllum nodosum is a brown seaweed common in Arctic tidal waters. We have collected A. nodosum samples from the Barents Sea (BS), Irminger Sea (IS), and Norwegian Sea (NS) in different reproductive stages and have evaluated their biochemical composition, radical scavenging potential, and health risks. The total content of dominating carbohydrates (fucoidan, mannitol, alginate, and laminaran) ranged from 347 mg/g DW in NS to 528 mg/g DW in BS. The proportion of two main structural monosaccharides of fucoidan (fucose and xylose) differed significantly between the seas and reproductive phase, reaching a maximum at the fertile phase in the BS sample. Polyphenols and flavonoids totals were highest in NS A. nodosum samples and increased on average in the following order: BS < IS < NS. A positive correlation of free radical scavenging activity for seaweed extracts with polyphenols content was observed. The concentration of elements in A. nodosum from the Arctic seas region was in the following order: Ca > Mg > Sr > Fe > Al > Zn > As total > Rb > Mn > Ba > Cu > Co. Seaweeds from BS had the lowest metal pollution index (MPI) of 38.4. A. nodosum from IS had the highest MPI of 83. According to the calculated target hazard quotient (THQ) and hazard index (HI) values, Arctic A. nodosum samples pose no carcinogenic risk to adult and child health and are safe for regular consumption. Our results suggest that the Arctic A. nodosum has a remarkable potential for food and pharmaceutical industries as an underestimated source of polysaccharides, polyphenols, and flavonoids.
摘要：
夜蛾是北极潮汐水域中常见的棕色海藻。我们从巴伦支海（BS）收集了A.nodosum样本，IrmingerSea(IS),和挪威海（NS）在不同的生殖阶段，并评估了它们的生化组成，自由基清除潜力，和健康风险。主要碳水化合物的总含量(岩藻依聚糖，甘露醇,海藻酸盐,和laminaran）的范围从NS的347mg/gDW到BS的528mg/gDW。岩藻依聚糖的两种主要结构单糖（岩藻糖和木糖）的比例在海洋和生殖阶段之间显着不同。在BS样品的可育阶段达到最大值。NSA.nodosum样品中多酚和类黄酮总量最高，平均按以下顺序增加：BSMg>Sr>Fe>Al>Zn>As总量>Rb>Mn>Ba>Cu>Co。BS海藻的最低金属污染指数（MPI）为38.4。来自IS的A.nodosum的MPI最高，为83。根据计算的目标危险商(THQ)和危险指数(HI)值，北极结球芽孢杆菌样品对成人和儿童健康没有致癌风险，并且经常食用是安全的。我们的结果表明，北极A.nodosum作为被低估的多糖来源，在食品和制药行业具有巨大的潜力，多酚，和类黄酮.
