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核农学报  2014 

铜藻多糖微波辅提工艺优化及其抗氧化活性研究

DOI: 10.11869/j.issn.100-8551.2014.06.1062, PP. 1062-1069

Keywords: 铜藻多糖,微波辅助提取,响应曲面法,抗氧化活性

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Abstract:

运用响应曲面法优化铜藻多糖(tongzaopolysaccharide,TZP)微波辅助提取的工艺条件,利用分级醇沉法得到TZP30%、TZP60%和TZP80%3个多糖组分。并对其DPPH自由基、ABTS自由基、OH自由基和O2-自由基的清除能力及其还原力进行了研究。结果表明:铜藻多糖微波辅助提取的最佳条件为料液比1:65,提取温度72℃,提取时间39min,多糖提取率为12.02%(n=3);在试验浓度范围内,TZP30%组分对羟基自由基的清除能力最高达98.07%;TZP60%组分对DPPH自由基清除能力最高达85.01%;TZP80%组分对ABTS自由基清除能力较强,还原力较大。铜藻多糖具有较高的抗氧化活性,具有作为天然抗氧化剂的应用前景。

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