Study on polysaccharide ultrasonic-assisted extraction process and antioxidation activity in Salicornia

The ultrasonic assisted extraction process of Polysaccharide in Salicornia and its antioxidation function were studied.The single-factor and orthogonal experiments were applied in the extraction process.The antioxidant capacity of Polysaccharide in Salicornia was estimated with the test of hydroxyl radical inhibition.The Result showed: The optimal extraction parameters were as follow: ultrasonic treatment time 15 min,extraction temperature 70 ℃,and solid/liquid(water)ratio 1∶15,extraction tmie 2 h.Under the optimized conditions,the extraction yield of polysaccharides was 6.12%.Compared with the traditional hot water extraction,the extraction efficiency was improved obviously.The test of antioxidant capacity showed that radical ·OH was eliminated significantly,and the role of these effect increased with the increase of polysaccharides concentration with IC50 concentration 0.578 mg/mL.