Abstract
Sunflower tray has been widely studied in recent years because of its rich polysaccharide. In this study, sunflower tray powder was used as raw materialto optimizing the process parameters of ultrasonic-assisted extraction of polysaccharides. Single-factor experiments were used to explore the effects of material-liquid ratio, ultrasonic temperature, ultrasonic time and ultrasonic power on the extraction rate of polysaccharides; response surface experiments were used to optimize the process parameters for the optimal polysaccharide extraction rate. The experimental results show that: the ratio of material to liquid is 1:37, the ultrasonic temperature is 52.50°C, and the ultrasonic time is 31min, the ultrasonic power is 300W. Extracted twice under this condition, the yield of sunflower tray polysaccharide reached 10.15%, the polysaccharide extraction process is reproducible and stable.
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