食品科学 ›› 2012, Vol. 33 ›› Issue (18): 88-92.

• 工艺技术 • 上一篇    下一篇

海红果多糖提取工艺及体外抗氧化活性研究

郝志鹏1,2,马丽杰2,吴 敬1,*,王英丽1,包海泉1   

  1. 1.内蒙古农业大学食品科学与工程学院 2.内蒙古医科大学基础医学院药理学教研室
  • 收稿日期:2011-06-29 修回日期:2012-07-23 出版日期:2012-09-25 发布日期:2012-09-07
  • 通讯作者: 郝志鹏 E-mail:117647392@163.com

Extraction and in vitro Antioxidant Activity of Polysaccharides from Dried Pulp of Malus micromalus Makino

  • Received:2011-06-29 Revised:2012-07-23 Online:2012-09-25 Published:2012-09-07

摘要: 目的:探讨海红果多糖(polysaccharide from Malus prunifolia Borkh,PFM)提取工艺条件及其体外抗氧化活性。方法:采用三因素三水平正交试验设计,考察提取温度、时间和料液比3个因素对海红果多糖提取工艺的影响;以VC为对照,应用DPPH法测定海红果多糖清除有机自由基能力、ABTS法测定其总抗氧化能力、Fenton反应测定其清除羟自由基能力。结果:PFM最佳提取工艺条件为提取温度90℃、提取时间6h、料液比1:10(g/mL),此条件下PFM得率为6.75%;PFM对羟自由基具有较强的清除作用(P<0.05),效果优于清除DPPH自由基和ABTS+自由基,但弱于VC。结论:优化海红果提取工艺得到的PFM具有较强的体外抗氧化活性。

关键词: 海红果, 多糖, 提取, 体外抗氧化

Abstract: Objective: To explore optimal extraction process and in vitro antioxidant activity of polysaccharides from dried pulp of Malus micromalus Makino (PMM). Methods: A three-factor, three-level orthogonal array design was used to investigate the effects of three extraction conditions including temperature, time and solid-to-solvent ratio on polysaccharide yield. In order to assess the in vitro antioxidant activity of PMM using vitamin C as control, their DPPH radical scavenging activity was measured and meanwhile, their total antioxidant capacity and hydroxyl radical scavenging activity of PMM were tested by ABTS assay and Fenton reaction, respectively. Results: The optimal conditions for the extraction of polysaccharides from dried pulp of Malus micromalus Makino were 6 h extraction at 90 ℃ and a solid-to-solvent ratio of 1:10 (g/mL), resulting in a polysaccharide yield of 6.75%. Although its antioxidant activity was weaker than that of vitamin C, PMM still revealed strong scavenging effect on hydroxyl, DPPH and ABTS+ free radicals. PPM was more effective in scavenging hydroxyl free radicals than DPPH and ABTS+ free radicals. Conclusion: The developed optimal procedure for the extraction of PMM is reliable. PMM has a strong antioxidant activity in vitro.

Key words: Malus micromalus Makino, polysaccharide, extraction, antioxidant activity in vitro