In intro antioxidant activities of different sulfated polysaccharides from chlorophytan seaweeds Ulva fasciata

Four different molecular weight sulfated polysaccharides (UFP1, UFP2, UFP3 and UFP4) were extracted and separated from Ulva fasciata by hot water extraction and ultrafiltration. Their chemical and physical characteristics were determined and antioxidant activities were investigated on the basis of s...

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Bibliographic Details
Published in:International journal of biological macromolecules 2013-08, Vol.59, p.295-300
Main Authors: Shao, Ping, Chen, Meng, Pei, Yaping, Sun, Peilong
Format: Article
Language:English
Subjects:
Antioxidant activity
Antioxidants - chemistry
Benzothiazoles - chemistry
Hydroxyl Radical - antagonists & inhibitors
hydroxyl radicals
Liquid-Liquid Extraction
macroalgae
Molecular Weight
Oxidation-Reduction
polysaccharides
Polysaccharides - chemistry
Polysaccharides - isolation & purification
protein content
Seaweed - chemistry
Spectrophotometry, Infrared
Sulfated polysaccharides
Sulfates
Sulfonic Acids - chemistry
superoxide anion
Superoxides - antagonists & inhibitors
Ultrafiltration
Ulva
Ulva - chemistry
Ulva fasciata
uronic acids
Uronic Acids - chemistry
Water
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Summary:Four different molecular weight sulfated polysaccharides (UFP1, UFP2, UFP3 and UFP4) were extracted and separated from Ulva fasciata by hot water extraction and ultrafiltration. Their chemical and physical characteristics were determined and antioxidant activities were investigated on the basis of superoxide radical assay, hydroxyl radical assay, ABTS radical assay, and reducing power assay. The results showed that four polysaccharides exhibited antioxidant properties, and UFP2 and UFP3, which have lower content of sulfate showed higher antioxidant activities than UFP1 and UFP4, which have higher content of sulfate. Besides, the content of protein, uronic acid and molecular weights of polysaccharides also influence their antioxidant activities. The antioxidant activities of UFP were not a function of a single factor but a combination of several factors.
ISSN:0141-8130
1879-0003
DOI:10.1016/j.ijbiomac.2013.04.048