Optimization of ultrasonic extraction process by response surface methodology of polysaccharides from Limonium bicolor Kunze (Bge.)

摘要

Polysaccharide from Limonium bicolor Kunze (Bge.) (LBPs) was extracted with the assistance of ultrasonic. Box-Behnken design (BBD) was employed to optimize extraction time; extraction temperature; ultrasonic extraction power and ratio of water to raw material to obtain a high LBPs yield. The optimum extraction conditions were as follows: extraction temperature 81.23°C, ultrasonic power 190.86 W, extraction time 42.39 min and ratio of water to raw material 15.4 ml/g. The yield of polysaccharide was 7.11% based on the above mentioned conditions. Close agreement between experimetal and predicted values was found.