Abstract
Under optimal extraction conditions, characterization and antioxidant activity of polysaccharides from the Suaeda salsa (L.) Pall. were investigated. This was the first report that described the composition of the polysaccharide form this plant. Obviously, the yield of 2.19% for extraction of polysaccharides was obtained as ethanol volume fraction of 65%, extraction time of 72 min, ultrasound assisted power of 438 W, and temperature of 85°C, respectively. The structure study was carried out with FT-IR and SEM, and the chemical contents of carbohydrates, proteins, uronic acids and total flavonoids were measured in this study. The crude polysaccharides were purified into two components including SGP-1-1 and SGP-2-1. Moreover, the chemical composition analysis according to HPLC showed that it was viscous polysaccharide, which mainly contained glucose, mannose, xylose, galacturonic acid, glucuronic acid, fucose, rhamnose, arabinose, galactose, respectively. Besides, it was proved that the optimum polysaccharides possessed higher significant potentials (P<0.05) in scavenging ability against DPPH, ABTS+ and hydroxyl radical.
Highlights
Suaeda salsa (L.) Pall. is a unique salt-tolerant herb of the chenopodiaceae, traditionally, it is a halophyte that growing mainly on sandy beaches and deserted in saline or alkaline soil
In the certain ethanol volume fraction range from 35% to 95%, the total extraction yield of SGP was correlated significant (P
The extraction time and ethanol volume fraction were reflected for 60 min with 65% at the 320W of ultrasound power
Summary
Suaeda salsa (L.) Pall. is a unique salt-tolerant herb of the chenopodiaceae, traditionally, it is a halophyte that growing mainly on sandy beaches and deserted in saline or alkaline soil. Is a unique salt-tolerant herb of the chenopodiaceae, traditionally, it is a halophyte that growing mainly on sandy beaches and deserted in saline or alkaline soil. The plants are mainly distributed on the coast and north of the Oceania, China's Yellow River Delta beach area. It has been used as a medicine to reduce fever or consumption to increase salinity [1]. Due to the growth in saline soil, the trace elements and oils contents of seeds in Suaeda salsa. No studies have been reported to extract polysaccharides from Suaeda salsa
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