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Ulvan, the sulfated cell-wall polysaccharides from green seaweeds (Ulva species), presents structural and functional properties of interest for different applications. Its extraction yield in water varies depending on the species, the period of collect and the mode of conservation of algae. To identify limits of extraction, the structure and interactions of ulvan in the cell wall of Ulva were investigated...
The impact of freezing, freeze-drying, hot-air drying, brining and dry salting stabilization methods of Ulva rotundata has been studied on the yield, physico-chemical characteristics and rheological properties of ulvan. Frozen (−30 and −80°C) and freeze-dried algae yielded ulvan extracts mainly composed of high molecular weight polysaccharides. These had the highest intrinsic viscosity and conservation...
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