无花果叶多糖提取及抗氧化活性研究

Study on extraction and antioxidant activity of polysaccharide from Ficus carica Linn leaves

以无花果叶为实验原料,去离子水为提取溶剂,采用超声波提取了多糖类物质。考察了液料比、超声功率、提取温度和提取时间四个因素对无花果叶多糖得率的影响。结果表明液料比为30∶1(mL/g)、超声功率为320W、提取温度为80℃、提取时间为50min时,无花果叶多糖得率可达12.58%,且实验可重复性好。对无花果叶多糖抗氧化活性进行了测试,发现无花果叶多糖具有良好的抗氧化活性。本文对于开发利用无花果叶多糖具有一定的参考价值。

Using Ficus carica Linn leaves as experimental materials and deionized water as extraction solvent,the polysaccharides were extracted by ultrasound.The effects of four factors,liquid-to-material ratio,ultrasonic power,extraction temperature and extraction time on the extraction rate of polysaccharides from Ficus carica Linn leaves were investigated.The results showed that when liquid-to-solid ratio was 30mL/g,ultrasonic power was 320W,the extraction temperature was 80℃,and the extraction time was 50min,the yield of polysaccharides reached 12.58%,and the experiment was reproducible.The antioxidant activity of Ficus carica Linn leaf polysaccharide was tested,and showed good antioxidant activity.This paper provides a reference for the development and utilization of polysaccharides from Ficus carica Linn leaves.