食品科学 ›› 2013, Vol. 34 ›› Issue (11): 142-146.doi: 10.7506/spkx1002-6630-201311032

• 基础研究 • 上一篇    下一篇

车前子总黄酮和总多糖粗提物的体外抗氧化性能及其对脑神经细胞的保护作用

胥 莉,李 阳,刘学波   

  1. 西北农林科技大学食品科学与工程学院,陕西 杨凌 712100
  • 收稿日期:2012-03-09 修回日期:2013-03-21 出版日期:2013-06-15 发布日期:2013-06-03
  • 通讯作者: 刘学波 E-mail:xueboliu@nwsuaf.edu.cn

Semen Plantaginis Extract: Antioxidant Activity and Protective Effect on Nerve Cell Death

XU Li,LI Yang,LIU Xue-bo   

  1. College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
  • Received:2012-03-09 Revised:2013-03-21 Online:2013-06-15 Published:2013-06-03

摘要:

目的:研究车前子总黄酮和总多糖粗提物的体外抗氧化能力和对6-羟基多巴胺(6-OHDA)诱导的神经细胞死亡的抑制作用。方法:分别用超声波辅助提取车前子黄酮,水浸提法提取多糖。采用DPPH法、铁还原力法、ABTS法分析比较两种提取物的抗氧化活性。建立6-OHDA诱导SH-SY5Y神经细胞死亡模型,噻唑蓝(MTT)法评价两种提取物对细胞死亡的抑制作用。结果:车前子总黄酮和总多糖的提取率分别为1.54%和2.76%。在实验质量浓度范围内,两种提取物抗氧化能力均随其质量浓度升高而增强,且总黄酮提取物表现出更强的抗氧化性。两种提取物均能有效抑制模型中神经细胞的死亡,且本身对细胞没有毒性。结论:车前子的总黄酮提取物和总多糖提取物均具有较强的体外抗氧化性,且能有效抑制6-OHDA诱导的神经细胞死亡,是天然有效的抗氧化及神经保护物质。

关键词: 车前子, 黄酮提取物, 多糖提取物, 抗氧化, SH-SY5Y细胞

Abstract:

Objective: To study the antioxidant activity of Semen Plantaginis (Semen Plantaginis Asiaticae) flavonoid extract
and polysaccharide extract as well as their protective effect on 6-hydroxydopamine (6-OHDA)-induced toxicity in SHSY5Y
nerve cells. Methods: Flavonoid was extracted under sonification while polysaccharide was extracted with hot water.
Comparison of their antioxidant activity was carried out by DPPH radical scavenging, ferric reducing antioxidant power
and 2,2’-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) radical cation (ABTS+·) assays. The cell death inhibitory effect
and toxicity of the extracts were assessed by MTT assay. Results: The extraction yields of flavonoid and polysaccharide
were 1.54% and 2.76%, respectively. Their antioxidant ability increased in a concentration-dependent manner, and the
flavonoid extract showed greater antioxidant potential than the polysaccharide extract. Both extracts effectively protected
cells against 6-OHDA induced death. Meanwhile, they were proved to be nontoxic. Conclusion: The main active compounds
in Semen Plantaginis, flavonoid and polysaccharide have strong antioxidant activity and significantly protective effect
against 6-OHDA-induced nerve cell death. Therefore, Semen Plantaginis has a promising potential as a source of natural
antioxidants and functional components that protect nerve cells from death.

Key words: Semen Plantaginis, flavonoid extract, polysaccharide extract, antioxidant, SH-SY5Y cells

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