Study on the technology of ultrasonic-assisted polysaccharide extraction of onion
YAN Shenghui
GAO Yuhong
Abstract：To obtain the optimum ultrasonic-assisted extraction technology of polysaccharide from onion, the single-factor extraction tests and response surface analysis were employed to optimize the technological conditions, including extraction temperature, liquid/solid ratios, ultrasonic processing time and power. Based on the principle of Box-Behnken design, response surface methodology with 3 factors and 3 levels were applied, and then interactive effects of the independent variables on extraction were established. The result showed that when the optimum extraction time was 50 min, temperature for polysaccharides extraction of onion was 71 ℃, liquid/solid ratio was 16∶1, ultrasonic power was 400 W, the actual extraction rate reached up to 5.13%. The extraction rate of polysaccharide obtained is 19.1%higher than what extracted by the conventional methods.
Keywords：OnionPolysaccharideUltrasonic extractionResponse surface analysis
Publication Date：2016-08-31
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 9-12 )