生物传感器技术在筛选赤芍中抗内毒素有效成分的应用研究

目的 :应用生物传感器技术优选赤芍中抗内毒素有效成分的提取方法。方法 :将内毒素包被于生物传感器的疏水样品池中 ,测定赤芍3种方法提取物与内毒素的亲合力及其与内毒素混合孵育后内毒素亲合力的变化。结果 :水浸法提取物与内毒素具有较高的亲合力 ,以1∶40稀释后能够中和78 1 %的内毒素。结论 :赤芍水浸法能够提取到更多的抗内毒素有效成分 ,测定结果与鲎试剂法一致 ;与传统的鲎试剂法比较 ,生物传感器技术具有快速、高效、直观、无干扰等优点。

Application of Biosensor Technology to Screening of Anti- endotoxin Materials in Radix Paeoniae Rubra

OBJECTIVE:To apply the biosensor technology to screening of the best method to extract and separate anti-endotoxin effective materials in Radix Paeoniae rubra.METHODS:The affinities of samples extracted by three different methods binding to lipopolysaccride(LPS)were determined with biosensor technology.Extracted materials were incubated with0.25EU/ml endotoxin for determination of change of binding activity.RESULTS:Material extracted by water showed high binding capaˉbility with LPS,after incubation with endotoxin,still had highly effective anti-endotoxin component;1∶40diluted water extract could neutralize78.1%endotoxin.Determination results by biosensor technology and traditional limulus reagent showed no difˉference.CONCLUSION:Water extraction could obtain more anti-endotoxin effective materials.Compared with traditional methods,biosensor technology is a fast,highly effective,direct and accurate method.