超声-微波协同辅助提取海藻酸钠的工艺条件

The Extraction Process of Sodium Alginate Aassisted by Ultrasound-Microwave

DOI：10.3969/j.issn.1673-1689.2012.02.017

中文关键词: 海带 褐藻酸钠 戊二醛 提取率 超声-微波协同萃取 消化反应

英文关键词: kelp sodium alginate glutaraldehyde extraction rate ultrasound-microwave extraction digestion reaction

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中文摘要:

以海带为原料,采用体积分数2%的戊二醛溶液前处理剂,超声-微波协同处理浸泡后的海带。通过正交实验确定协同处理的最佳处理条件为:微波功率500 W,提取时间60s,料液质量体积比1g∶20mL,提取次数2次。在消化反应中控制pH、温度、时间、料液质量体积比,得出的最佳提取条件为:pH 12、温度50℃、反应时间2.5h,料液质量体积比1g∶20mL。通过上述工艺处理,所得褐藻酸钠的粘度为3 670mPa.s,提取率为88.6%。与传统的提取法法相比,利用协同处理破坏细胞结构再进行消化反应具有省时,提取效率高,产品质量好的优点。

英文摘要:

With the kelp as raw material,2% glutaraldehyde as pre-treatment agent,the optimum process parameters for the soaked kelp by Ultrasound microwave were determined in this manuscript.The optimum conditions were listed as follows: Ultrasonic power 50 W,microwave power 500 W,the processing time 60 s,liquid ratio 1∶20,extraction times 2.The optimal extraction conditions in assimilating action were obtained: pH 12,temperature 60 ℃,reaction time 2.5 h,liquid ratio 1∶20.Under the optimum conditions,the extraction rate for sodium alginate was 88.6% and the viscosity was 3670 mPa·S.

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