海带中褐藻糖胶的超声提取工艺的优化

目的研究以水为溶剂超声波强化提取海带褐藻糖胶的工艺。方法采用正交设计,以超声提取时间、超声功率、固液比和提取温度为考察因素,优选了超声波提取海带中褐藻糖胶的最佳工艺。结果各因素对提取率的影响大小依次为：超声提取时间〉固液比〉提取温度〉超声功率,优选的最佳提取工艺为：超声作用时间30 min,固液比1∶30,提取温度40℃,超声功率320 W。按此条件重复实验3次,测得褐藻糖胶的提取量为19.89 mg.g-1。结论较之传统提取方法,超声法提取海带中褐藻糖胶具有省时、节能等优点。

Study on technology of extracting fucoidan from Laminaria Japonica by ultrasound

Objective To study on ultrasound extraction of fucoidan from Laminaria Japonica process with water.Methods The orthogonal experiment was designed with ultrasound time,ultrasound power,solid-liquid ratio and extraction temperature as factors to optimize the extraction process of fucoidan.Results Various factors on the extraction rate were in sequence：ultrasound time,solid-liquid ratio,extraction temperature,ultrasound power.The optimal process were as follows：the extraction time for 30 min,solid-liquid ratio of 1∶30,40 ℃ temperature and ultrasound power of 320 W.Repeated experiments in this condition resulted yielding fucoidan of 19.89 mg·g-1.Conclusion Compared with conventional methods,ultrasound extraction has many advantages such as time-saving,energy conservation and so on.