Antialgal Activity of Glycoglycerolipids Derived from a Green Macroalgae Ulva prolifera on Six Species of Red Tide Microalgae

[摘要] 1-O-palmitoyl-3-O-β-D-galactopyranosyl glycerol, 1-O-octadecanoic acid-3-O-β-D-galactopyranosyl glycerol, and 1-O-palmitoyl-2-O-oleoyl-3-O-β-D-galactopyranosyl glycerol were isolated from Ulva prolifera for the first time in our previous research. There are growth inhibiton of these three glycoglycerolipids against six species of red tide microalgae (Amphidinium carterae, Heterosigma akashiwo, Karenia mikimotoi, Phaeocystis globosa, Prorocentrum donghaiense, and Skeletonema costatum) investigated. Results showed that they have selective antialgal activity against six species of red tide microalgae, and antialgal activities against test red tide microalgae obviously enhanced with the increase of concentration of glycoglycerolipids. Among them, 1-O-octadecanoic acid-3-O-β-D-galactopyranosyl glycerol and 1-O-palmitoyl-2-O-oleoyl-3-O-β-D-galactopyranosyl glycerol exhibited more extensive antialgal activities, and the growth of Phaeocystis globosa, Prorocentrum donghaiense, and Skeletonema costatum (or Karenia mikimotoi, and Skeletonema costatum) was inhibited by these two glycoglycerolipids. Further, EC50-96h values of these three glycoglycerolipids for six red tide microalgae were obtained for the first time. By analyzing and comparing EC50-96h values, it has been determined that 1-O-octadecanoic acid-3-O-β-D-galactopyranosyl glycerol and 1-O-palmitoyl-2-O-oleoyl-3-O-γ-D-galactopyranosyl glycerol showed the superior application potential than potassium dichromate as a characteristic antialgal agent against Phaeocystis globosa; More importantly, 1-O-octadecanoic acid-3-O-β-D-galactopyranosyl glycerol exhibited the superior application potential than potassium dichromate and other reported compounds as a characteristic antialgal agent against Prorocentrum donghaiense.

[发布机构] Jiangsu Key Laboratory of Marine Bioresources and Eco-environment, Huaihai Institute of Technology, Lianyungang; 222005, China^1;Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Lianyungang; 222005, China^2;Jiangsu Key Laboratory of Marine Biotechnology, Huaihai Institute of Technology, Lianyungang; 222005, China^3

[效力级别] 材料科学

[关键词] Anti-algal activities;Heterosigma akashiwo;Macro-algae;Micro-algae;Phaeocystis globosa;Potassium dichromates;Prorocentrum donghaiense;Skeletonema costatum