Optimization extraction technology and preliminary characterization of fucoidan from Laminaria japonica
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摘要: 采用高压均质与复合酶结合的方法提取海带岩藻多糖,在单因素实验的基础上,选料水比、酶用量、酶作用pH为自变量,以岩藻多糖得率为响应值,利用Box-Behnken实验设计和响应面分析法,优化得岩藻多糖最佳提取工艺条件为:料水比1∶35,酶解pH5.32,酶用量为2.5%,在此条件下,岩藻多糖得率为14.53%±0.05%;利用HPGFC测定岩藻多糖分子量为639、248、79ku;利用IC-PAD检测岩藻多糖的各组分及含量为:岩藻糖42.81%、鼠李糖1.95%、阿拉伯糖1.57%、半乳糖31.35%、葡萄糖3.30%、木糖5.56%、甘露糖13.30%。Abstract: Using the high pressure homogeneous combined with composite enzyme extracted fucoidan from Laminaria japonica. With the fucoidan extraction rate as a measure indicator, alga/water ratio, enzyme dosage, pH were optimized by using response surface methodology based on single factor experiments. Then the optimized condition obtained by Box-Behnken design and response surface methodology were as follows:water ratio 1∶35, pH5.32, enzyme dosage 2.5%. Under this condition, the extraction rate was 14.53%±0.05%.At last, molecular weight of fucoidan were 639, 248, 79 ku, determined by HPGFC;IC-PAD analysis showed monosaccharides constituents in the fucoidan were fucose, , rhamnose, arabinose, galactose, glucose, xylose, mannose. And their contents were 42.81%, 1.95%, 1.57%, 31.35%, 3.30%, 5.56%, 13.30% respectively.
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Keywords:
- fucoidan /
- response surface /
- optimization /
- structural analysis
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