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.
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.
出处
《过程工程学报》
CAS
CSCD
北大核心
2001年第1期58-61,共4页
The Chinese Journal of Process Engineering
基金
海洋863青年基金资助项目!(编号:819-Q-15)
关键词
气升式反应器
超声破碎
浸提
海带
硫酸酯多糖
air-lift reactor
ultrasonic wave
extraction
Laminaria japonica
sulfate radical polysaccharide
