摘要
选对马尾松树皮原花青素具有较好吸附和解吸能力的大孔吸附树脂,测定不同温度时的吸附等温线和不同起始浓度下的吸附动力学曲线等,研究几种大孔吸附树脂对马尾松树皮原花青素吸附过程的吸附动力学特征。并确定其最佳吸附及脱附条件。结果表明:LSA-10型弱极性大孔吸附树脂对马尾松树皮原花青素有较好的吸附和解吸效果。动力学结果表明:吸附平衡数据符Freundlich吸附等温方程、Langmuir平衡吸附速率方程,相关性均良好。最佳吸附条件为:pH值7,上样流速为1mL/min,上样浓度10mg/mL～12.5mg/mL,洗脱流速为1.5mL/min,研究结果对优化原花青素的分离纯化工艺有一定的指导作用。
Screen the macroporous adsorption resin with better adsorption and desorption ability on Proanthocyanidins from Pinus massoniana＇s Bark.Determine the adsorptive equilibrium curve at different temperatures and adsorptive dynamic curve under the different beginning concentrations to study the adsorptive thermodynamics and dynamics of adsorption of procyanidins onto macroporous resin,and ascertian its optimum adsorption and desorption condition.The results showed that the LSA-10 with a high adsorption quantity and desorption rate to compared static and dynamic absorption performance with four types of coarse adsorption resin.The dynamics result shows the adsorptive balance data correlate well to Freundlich equation and Lagergren equation.The relativities among them are all good.The best seperation and purification could be obtained while the sample loading and eluting flow rate are 1 mL/min,1.5 mL/min and pH 7 respectively.The experimental results indicate that the model can be used to guide the optimization of operation conditions for the chromatographic separation andpurification of procyanidins in a macroporous resin column.
出处
《食品研究与开发》
CAS
北大核心
2010年第9期15-19,共5页
Food Research and Development
基金
国家十一五科技支撑计划项目(2006BAD27B03)
关键词
马尾松树皮
原花青素
大孔吸附树脂
吸附动力学
Pinus massoniana＇s Bark
Proanthocyanidins
microporous resins
adsorptive dynamics
