Optimization of ultrasonic extraction of Astragalus polysaccharides by orthogonal design
In this experiment,Astragalus polysaccharide was extracted from Astragalus by ultrasonic method,and orthogonal design was applied to optimize the extraction process.The effects of extraction temperature,extraction time,solid-liquid ratio and the ultrasonic power were investigated.The results showed that when the extraction temperature was 80℃,the extraction time was 20min,the solid-liquid ratio was 1∶20(g/mL),and the ultrasonic power was 300W,the extraction yield of Astragalus polysaccharides was the best,which could reach 9.87%.Ultrasonic extraction of Astragalus polysaccharide has high extraction rate,short time and good reproducibility.It is expected that this study can provide positive reference for the efficient extraction of Astragalus polysaccharide,so as to promote the wide application of Astragalus polysaccharide as a feed additive.
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