摘要
通过吸附-解吸试验,比较6种不同的大孔吸附树脂对大枣多糖提取液的脱色效果。在静态吸附试验研究的基础上,筛选出LSA-800B树脂进行动态试验研究。结果表明,该树脂吸附大枣多糖色素的最佳参数为:室温(约20℃),上样液pH值3～4,吸附流速2.0mL/min,在该条件下对大枣多糖提取液中色素的吸附率可达91.2%,用70%乙醇溶液作为解吸剂,20℃、解吸流速1.0mL/min时,多糖损失率为6.0%。使用LSA-800B大孔吸附树脂对大枣多糖脱色可以获得更高的脱色率以及更低的多糖损失率。
De-coloration properties of six kinds macro-porous resins on extracted Chinese date polysaccharide solution were performed by using adsorption-desorption tests. The resin LSA-800B was finally selected for kinetic studies based on the static adsorption results. The results demonstrated that the optimum adsorption parameters for the extracted solution were： temperature 20℃, pH 3-4, adsorption flow rate 2.0mL/ rain and the adsorption ratio 91.2%. When using ethanol-water （70 ： 30, v/v） as desorption solvent and under the temperature 20℃ and flow rate 1.0 mL/min, the loss ratio of polysaccharide was 6.0%. Higher adsorption ratio and lower loss ratio of polysaccharide could be obtained by means of de-coloration with LSA- 800B macro-porous resin.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2007年第10期180-184,共5页
Food and Fermentation Industries
关键词
大孔吸附树脂
大枣
多糖
脱色
macro-porous resin, chinese date, polysaccharide,de-coloration
