A new sulfated acetamido-heteropolysaccharide, HPS4-2A, was obtained by aqueous extraction followed by precipitation wit......

海蒿子（Sargassum comfusum Agardh）经热水抽提、乙醇沉淀、DEAE-Sephadex A-25柱层析分离，得到多糖DEI、DEII，糖质量分数分别为52．40％，38......