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采用微波碱提法,酸性条件下沉淀,并用乙醇重新溶解,从花生壳中提取活性抗氧化活性成分黄酮。用NaNO2-Al(NO3)3比色法测定提取物总黄酮的纯度,以高效液相色谱法测定木犀草素的含量。最佳提取条件为:提取2次,每次提取7.5min,料液比1∶20,氢氧化钠浓度0.1mol/L。最佳条件下总黄酮提取率为3440mg/kg,木犀草素含量为7.28%。
Using microwave alkaline extraction, precipitation under acidic conditions, and re-dissolved with ethanol, extracted from the peanut shells active antioxidant activity of flavonoids. The purity of total flavonoids was determined by NaNO2-Al (NO3) 3 colorimetry and the content of luteolin was determined by high performance liquid chromatography. The optimum extraction conditions were: extraction 2 times, extraction 7.5min each time, the ratio of solid to liquid 1:20, sodium hydroxide concentration 0.1mol / L. Under the optimal conditions, the extraction rate of total flavonoids was 3440mg / kg and the content of luteolin was 7.28%.