• Van Thi Thanh Van NhaTrang Institute of Technology Research and Application, VAST
  • Hieu Mai Nhu Vo NhaTrang Institute of Technology Research and Application, VAST
  • Hang Thi Thuy Cao NhaTrang Institute of Technology Research and Application, VAST
  • Trinh Thi Hoai Phan NhaTrang Institute of Technology Research and Application, VAST
  • Duc Mai Tran NhaTrang Institute of Technology Research and Application, VAST
  • Thu Thi Minh Quach Institute of chemistry, VAST
  • Thuy Thi Thu Thanh Institute of chemistry, VAST



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


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.


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The 7th National Workshop on Research and Development of Natural Products