Tối ưu hóa quá trình nấu chiết alginate từ bã rong nâu Turbinaria ornata (Turner) J. AGARDH

Alginate is liner polysaccharides extracted from brown seaweed. It is a co-polymer composed of (1® 4)-β-D-mannuronic acid and α-L-guluronic acid. In this paper, the effects of technological factors such as pH value of sodium carbonate solution, temperature and time during the alkaline extraction step on alginate yield and viscosity of the alginate were studied. The results showed that the best conditions for alkaline extraction alginate from brown seaweed residue Turbinaria ornata were determined at pH value of sodium carbonate solution 11, temperature 59oC for 1.5 hours. The maximum alginate content and viscosity were 32.15% dry weight algae and 743 mPa.s, respectively.