食品科学 ›› 2009, Vol. 30 ›› Issue (13): 120-123.doi: 10.7506/spkx1002-6630-200913028

• 基础研究 • 上一篇    下一篇

温度、光照及p H 值对阴香花色苷清除D P P H自由基活性的影响

张 镜1, 温思霞1, 廖富林1, 黄思梅1, 刁树平2, 朱远平1, 牟利辉1, 范玉琴1   

  1. 1.嘉应学院生物系 2.嘉应学院化学系
  • 收稿日期:2008-09-19 修回日期:2009-01-24 出版日期:2009-07-01 发布日期:2010-12-29
  • 通讯作者: 张镜 E-mail:zhangcqf@jyu.edu.cn
  • 基金资助:

    广东省梅州市科技计划项目(2006A11)

Effects of Temperature, Light and pH on DPPH Radical Scavenging Activity of Anthocyanin Extracted from Fruit of Cinnamoumum burmannii

ZHANG Jing1,WEN Si-xai1,LIAO Fu-lin1,HUANG Si-mei1,DIAO Shu-ping2,ZHU Yuan-ping1,MOU Li-hui1,FAN Yu-qin1     

  1. 1. Department of Biologistry, Jiaying University, Meizhou 514015, China ;
    2. Department of Chemistry, Jiaying University, Meizhou 514015, China
  • Received:2008-09-19 Revised:2009-01-24 Online:2009-07-01 Published:2010-12-29
  • Contact: ZHANG Jing E-mail:zhangcqf@jyu.edu.cn

摘要:

以大孔吸附树脂精制及半制备HPLC 纯化的阴香果实花色苷样品,研究阴香花色苷清除DPPH 自由基的活性及温度、光照、pH 值对花色苷清除DPPH 自由基的影响。结果表明:阴香花色苷对DPPH 自由基半清除剂量IC50 = 4.6μg/ml;花色苷溶液100℃处理5h 及130℃处理30min 对DPPH 自由基清除率显著下降,pH 9 处理3d 及pH10 处理2d 自由基清除率,625 ~3418 lx 光照8d 自由基清除率与处理1d 无显著差异,14~70.8klx 太阳光对花色苷清除DPPH 自由基活性的稳定性有显著影响。

关键词: 阴香, 花色苷, DPPH, 羟自由基, 抗氧化性

Abstract:

The anthocyanin extracted from fruit of C. burmannii was purified by macroporous adsorption resin and semipreparative HPLC, and then the effects of temperature, light and pH on the activity of the anthocyanin to scavenge DPPH radical was investigated. The results showed that the IC50 of the anthocyanin was 4.6 μg/ml. Its antioxidant capacity significantly decreased after being heated for 5 h at 100 ℃ or for 30 min at 130 ℃. No significant difference in the DPPH radical scavenging activity was found between the treatment for 3 d at pH 9 and that for 2 d at pH 10. Fluorescence radiation for 1 h at different intensities led to sharp decreases of the DPPH radical scavenging activity to almost the same extent. After that the DPPH radical scavenging activity almost did not change regardless of the increase of fluorescence intensity or the prolongation of duration. Sunlight intensity exhibited significant effect on the activity of the anthocyanin to scavenge DPPH radical.

Key words: C. burmannii, anthocyanin, DPPH, hydroxyl radical, antioxidant capacity

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