食品科学 ›› 2011, Vol. 32 ›› Issue (22): 20-24.doi: 10.7506/spkx1002-6630-201122005

• 工艺技术 • 上一篇    下一篇

花果山墨旱莲多糖的提取及体外抗氧化活性比较

许瑞波1,2,王新新2,唐秋萍2,胡喜兰2,詹永成2   

  1. 1.江苏省海洋生物技术重点实验室 2.淮海工学院化工学院
  • 出版日期:2011-11-25 发布日期:2011-11-11
  • 基金资助:
    江苏省海洋生物技术重点建设实验室开放课题(2009HS06);江苏省青蓝工程优秀青年骨干教师资助项目(2008); 淮海工学院博士科研启动项目(KQ10130)

Extraction of Polysaccharides from Eclipata Alba Grown in Huaguo Mountain and Comparison of Antioxidant Activity in vitro with Total Flavonoids from Eclipata Alba

XU Rui-bo1,2,WANG Xin-xin2,TANG Qiu-ping2,HU Xi-lan2,ZHAN Yong-cheng2   

  1. (1. Jiangsu Key Laboratory of Marine Biotechnology, Lianyungang 222005, China; 2. School of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China)
  • Online:2011-11-25 Published:2011-11-11

摘要: 在单因素试验的基础上,通过正交试验优化从连云港花果山墨旱莲中提取多糖的工艺条件,并且对墨旱莲多糖(polysaccharides of Eclipata Alba,PEA)与墨旱莲黄酮类化合物(flavonoids of Eclipata Alba,FEA)的抗氧化活性进行比较。结果表明:PEA的最适宜提取工艺条件为料液比1:15、提取温度90℃、提取时间1h、提取3次;用Sevag法去除PEA中蛋白质、核酸等杂质,并用紫外光谱、红外光谱对其进行表征;最后,利用Fenton反应和邻苯三酚自氧化反应比较PEA、FEA对羟自由基( ·OH)和超氧阴离子自由基(O2- ·)的清除能力,结果表明PEA、FEA对两种自由基都具有良好的清除能力,而且对 ·OH的清除能力大于对O2- ·的清除能力。当质量浓度大于0.085mg/mL时,FEA的抗氧化活性强于PEA。

关键词: 花果山墨旱莲, 多糖, 黄酮类化合物, 提取, 抗氧化活性

Abstract: Using one-factor-at-a-time experiments followed by orthogonal array design, the process conditions of polysaccharide extraction from Eclipata Alba grown in Huaguo Mountain were optimized in this study. Also, a comparison of antioxidant activity was carried out between polysaccharides (PEA) and flavonoids (FEA) from Eclipata Alba. The results showed that the optimum conditions for polysaccharide extraction were material-to-liquid ratio of 1:15 (g/mL), extraction time of 1 h, extraction temperature of 90 ℃ and extraction number of 3. After the removal of impurities such as proteins, nucleic acids, etc, the extracted polysaccharides were characterized using ultraviolet spectroscopy and infrared spectroscopy. Both PEA and FEA had a powerful ability to scavenge hydroxyl and superoxide anion radicals and could scavenge the former more powerfully. At the same concentrations exceeding 0.085 mg/mL, FEA indicated stronger antioxidant activity than PEA.

Key words: Eclipata Alba grown in Huaguo Mountain, polysaccharides, flavonoids, extraction, antioxidant activity

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