提取工艺对金银花叶提取物的油脂抗氧化活性的影响

Effect of extraction process on oils antioxidant activity of honeysuckle leaves

摘要: 以金银花叶为原料,研究了提取溶剂、提取工艺条件对金银花叶的油脂抗氧化活性的影响。以过氧化值为测定指标,筛选了最佳提取溶剂,并以油脂氧化的抑制率为测定指标,通过响应面实验对提取工艺条件进行了优化。实验结果表明:乙醇为最佳提取剂,当乙醇浓度71%、液料比31:1(m L/g)、温度75℃、时间4.5 h,提取物对玉米油的抗氧化能力最强,抑制率达到了71.9%。因此,选择合适的提取工艺,能提高金银花叶提取物对油脂的抗氧化活性。

Abstract: Honeysuckle leaves were used for raw material, the effects of extraction solvent and extraction conditions on oils antioxidant activity of honeysuckle leaves were studied.The optimum extraction solvent was selected by using the peroxide value as the index, and the extraction process conditions were optimized by using the inhibition rate of lipid oxidation as the index and response surface experiment.The experimental results showed that ethanol was the best extractant, the optimum extraction conditions were as follows: ethanol concentration 71%, liquid to material ratio 31 : 1 ( mL/g) , temperature 75 ℃, time 4.5 h.Under such conditions, oxidation inhibition rate of corn oil was up to 71.9%.Therefore, the antioxidant activity of extracts from honeysuckle leaves could be improved by selecting suitable extraction process.