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本文主要对海带（Ｌａｍｉｎａｒｉａ ｊａｐｅｎｉｏａ Ａｒｅｓｃｈ）、鼠尾藻［Ｓａｒｇａｓｓｕｍ ｔｈｕｎｂｅｒｇｉｌ（Ｍｅｒｔ） ｏ＇Ｋｕｎｔｇｅ］、萱藻［Ｓｃｙｔｏｓｉｐｈｏｎ Ｌｏｍｅｎｔａｒｕｓ（Ｌｙｎｇｂ）Ｊ．Ａｇ］、石莼［Ｕｌｖａ．ｌａｃｔｕｃａｌ］、刚毛［ｃｌａｄｏｐｈｏｒａ ｋｕｔｚｉｎｇ］５种海藻多糖的硫酸基含量以及体外抗血小板聚集作用进行了观察。结果发现，萱藻多糖的硫酸基含量及抗血小板聚集作用显著高于其他海藻多糖，其他依次为鼠尾藻、海带、石莼。刚毛多糖的抗血小板聚集的作用不显著。５种海藻多糖的抗凝血活性与其硫酸基含量是显著正相关。
This paper mainly focuses on Laminaria japenioa Aresch, Sargassum thunbergil (Mert) o’Kuntge, and Scytosiphon Lomentarus (Lyngb) J. Ag], Shi Wei [Ulva. The sulfated content of five kinds of seaweed polysaccharides and their antiplatelet aggregation in vitro were observed. The results showed that the sulfate group content and anti-platelet aggregation of Aocicular polysaccharide were significantly higher than those of other seaweed polysaccharides, followed by Verticillata, Laminaria, and Dendrobium. The anti-platelet aggregation effect of bristle polysaccharides was not significant. The anticoagulant activity of five kinds of seaweed polysaccharides was significantly positively correlated with its sulfate group content.