大孔树脂AB-8分离纯化伦晚脐橙总黄酮

Separation and purification of total flavonoids from lane late navel orange by AB-8 macroporous resins

考察了不同大孔树脂对伦晚脐橙残次果总黄酮的吸附与解吸性能,筛选出适宜纯化的大孔树脂AB-8。以芸香柚皮苷、橙皮苷、香蜂草苷、甜橙黄酮、川陈皮素、橘皮素6种标准品绘制标准曲线,采用高效液相色谱法(HPLC)进行定性、定量分析。通过静态与动态吸附、解吸,得出大孔树脂AB-8纯化伦晚脐橙残次果总黄酮的最佳工艺条件为:0.75 mg/m L的p H=3上样液,上样体积为3.5倍柱体积(BV),上样流速为2 BV/h;80%乙醇为洗脱剂,2 BV/h流速洗脱,洗脱体积为5 BV,解吸率达90.73%。经大孔树脂纯化后,提取物中总黄酮含量由纯化前36.04 mg/g增加到纯化后334.54 mg/g。HPLC分析结果表明,AB-8分离纯化伦晚脐橙总黄酮不会造成单体黄酮组成变化,其中主要黄酮类物质是芸香柚皮苷、橙皮苷,占总量的91.14%。该工艺能有效地富集伦晚脐橙黄酮类,去除糖、色素等物质,且对伦晚脐橙黄酮组分没有影响。

The adsorption and desorption of total flavonoids from lane late navel orange fruits were investigated by using 3macroporous resins.Results indicated that AB-8 resin was appropriate to purify the total flavonoids.Then the polyphenols from orange fruits were qualitatively and quantitatively by HPLC（ high performance liquid chromatography）. To optimize the separation process,the static and dynamic of adsorption and desorption experiments were carried out,the optimal adsorption conditions were as follows： initial concentrations in sample solution 0.75 mg/m L,p H3.0,sample loading amount 3.5 BV,flow rate 2 BV/h.The optimal desorption parameters were 80% ethanol 5 BV,flow rate of 2 BV/h,the desorption ratio was 90.73%.After purification,the content of flavonoids in product was increased from 36.04 mg/g to 334.54 mg/g. HPLC analysis results found that the flavonoids profiles of lane late navel orange were not changed after adsorption and desorption by AB-8macroporous resin. The main flavonoids were narirutin and hesperidin,the percentage content to the total flavonoids was91.14%. The results showed that AB-8 resin revealed a good ability to enrichment total flavonoids from lane late navel orange,and the method can be referenced for the enrichment of total flavonoids from other material.