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菌物学报  2015 

李氏块菌提取物抗氧化活性的研究

DOI: DOI:10.13346/j.mycosystema.140064, PP. 465-472

Keywords: 白块菌,子实体,自由基,多酚

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Abstract:

对李氏块菌Tuberliyuanum子实体的不同提取物,包括甲醇提取物(ME)、乙醇提取物(EE)、丙酮提取物(AE)、正丁醇提取物(BAE)和乙酸乙酯提取物(EAE),进行清除DPPH自由基、羟基自由基、超氧阴离子自由基、铁离子螯合能力、还原力以及总酚含量的测定和研究,发现ME对DPPH自由基、超氧阴离子自由基清除及还原力活性最高,EC50值分别为23.37mg/mL、11.65mg/mL和24.47mg/mL;EE对羟基自由基清除和铁离子螯合能力活性最高,EC50值分别为7.24mg/mL和小于0.5mg/mL;ME的总酚含量最高(3.08mgGAE/g提取物),其次是EE(1.34mgGAE/g提取物),提取物总酚含量与抗氧化活性呈现出一定的正相关性。

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