Van Thi Thanh Van, Hieu Mai Nhu Vo, Hang Thi Thuy Cao, Trinh Thi Hoai Phan, Duc Mai Tran, Thu Thi Minh Quach, Thuy Thi Thu Thanh


In this paper, sulfated polysaccharides were extracted from red algae Betaphycus gelatinus species collected at Ninh Thuan sea by using several extraction methods. The structural characteristics of sulfated polysaccharides was investigated by IR and NMR methods. The results indicated that polysaccharide from Betaphycus gelatinus identified as hybrid carrageenan, mainly composed of β-carrageenan, κ-carrageenan and g-carrageenan. Biological activity evaluation showed that the sulfated polysaccharides possessed antioxidant activity with different levels.


Betaphycus gelatinus, biological activity, red algae, sulfated polysaccharide, structure

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