【摘要】 在内径8 cm、有效容积为1 L的气升式循环超声破碎浸提装置中, 进行了超声波强化海带硫酸酯多糖浸提实验. 在pH 5.0、提取温度40oC、液固比45、提取时间25 min、通气量75 L/h 、超声功率120 W、超声作用时间百分比为100%的工艺条件下，硫酸酯多糖的提取率可达1.86%, 比传统水提法高，且极大地缩短了提取时间，比相同条件下不用超声时的提取率(1.11%)高得多. 此法所得多糖的SO42( 含量(26.5%)比水法浸提(20.8%)和相同条件下不用超声时(21.3%)都要高，显示出超声波在强化海带硫酸酯多糖浸提方面的良好应用前景.更多还原

【Abstract】 The extraction of sulfate radical polysaccharide from Laminaria Japonica enhanced by ultrasonic wave in an air-lift reactor was reported. The optimal experimental conditions in this reactor (diameter 8 cm, working volume 1 liter) were pH 5.0, operation temperature 40oC, mass ratio of liquid to solid 45, extraction time 25 min, air flow rate 75 L/h, ultrasonic power 120 W, ultrasonic duty cycle 100%. Under the above conditions, the extraction ratio of sulfate radical polysaccharide reached 1.86%, higher than that by treatment for 3 h in water at 100oC and that under the same conditions without ultrasonic wave applied. The content of SO42( in sulfate radical polysaccharide of the former was 5.7% higher due to application of ultrasonic wave. The experimental results showed that this novel extraction process is prospective in the extraction of polysaccharide from seaweed.更多还原