食品科学 ›› 2009, Vol. 30 ›› Issue (20 ): 227-230.doi: 10.7506/spkx1002-6300-200920047

• 工艺技术 • 上一篇    下一篇

提取6-姜酚分子印迹聚合物的制备及应用

阎凤超,彭 宁,王 敏,黄雪松*   

  1. 暨南大学食品科学与工程系
  • 收稿日期:2009-06-10 出版日期:2009-10-15 发布日期:2010-12-29
  • 通讯作者: 黄雪松* E-mail:thxs@jnu.edu.cn
  • 基金资助:

    广东高校科技成果转化重大项目(cgzhzd0806);广州市番禺区引导项目(2008-z-64-1)

Preparation of Molecularly Imprinted Polymers for 6-Gingerol Separation

YAN Feng-chao,PENG Ning,WANG Min,HUANG Xue-song*   

  1. (Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China)
  • Received:2009-06-10 Online:2009-10-15 Published:2010-12-29
  • Contact: HUANG Xue-song* E-mail:thxs@jnu.edu.cn

摘要:

为从生姜中提取高纯度的6-姜酚,用姜酮代替6-姜酚作为模拟模板,以甲基丙烯酸为功能单体(MAA),二甲基丙烯酸乙二醇酯(EGDMA)为交联剂,偶氮二异丁睛(AIBN)为引发剂,乙醚为致孔剂,用单甘酯作为乳化剂,在含水乳状液状态下,合成球形的姜酮-分子印迹聚合物。将脱除模板的分子印迹聚合物(MIPs)装柱,然后上新鲜姜汁,吸附达到平衡后,用清水洗脱除去杂质,再分别用体积分数10%、15%、20%、25%、30%、35%、40%、95%食用酒精依次洗脱被吸附的姜酚。收集的洗脱液分别经真空浓缩,萃取后得到的残留物用高效液相色谱(HPLC)测定其6-姜酚含量。结果显示20%、25%的洗脱液中6-姜酚含量最高,两者共占所获6-姜酚总量的79.07%,其中MIPs对6-姜酚的吸附能力为63.35mg/g,远远大于空白印记聚合物(NIPs)对6-姜酚的吸附能力11.26mg/g,因此合成的MIPs对6-姜酚具有高度的特定选择性,可以用于工业化生产制备6-姜酚。

关键词: 生姜, 6-姜酚, 姜酮, 分子印迹聚合物

Abstract:

Molecularly imprinted polymers (MIPs) were prepared using zingerone as the mimic template to separate 6-gingerol with a high purify from fresh ginger. The polymerization was conducted in aqueous solution using methylacrylic acid (MAA) as functional monomers, ethylene glycol dimethylacrylate (EGDMA) as the cross-linker, 2,2'-azobisisobutyronitrile (AIBN) as the initiator, ester as porogen and glycerol monostearate (GM) as the emulsifier. Resultant MIPs were loaded with fresh ginger juice until equilibrium. After the removal of impurities through water elution, loaded MIPs were sequentially eluted with 10%, 15%, 20%, 25%, 30%, 35%, 40% and 95% (V/V) ethanol solution. The residues obtained after ethanol evaporation was analyzed for 6-gingerol content by HPLC. The highest yield of total 6-gingerol was distributed mainly in fractions of 20% and 25% ethanol elution with a total amount of 79.07%. The adsorption capability of MIPs to 6-gingerol was 63.35 mg/g, much higher than that of NIPs of 11.26 mg/g. The synthesized MIPs exhibited highly specific recognition and selectivity for 6-gingerol and could be utilized to produce 6-gingerol in an industrial scale from fresh ginger.

Key words: ginger, 6-gingerol, zingerone, molecularly imprinted polymers

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