食品科学

• 基础研究 • 上一篇    下一篇

火棘果红色素的提取及抗氧化活性

李鹏霄1,茆广华2,赵 婷2,邹 烨2,任月娜3,白石琦1,吴向阳3,仰榴青3,*   

  1. 1.江苏大学药学院,江苏 镇江 212013;2.江苏大学食品与生物工程学院,江苏 镇江 212013;
    3.江苏大学化学化工学院,江苏 镇江 212013
  • 出版日期:2013-09-15 发布日期:2013-09-27
  • 通讯作者: 仰榴青

Extraction and Antioxidant Activity of Red Pigments from Pyracantha fortuneana

LI Peng-xiao1,MAO Guang-hua2,ZHAO Ting2,ZOU Ye2,REN Yue-na3,BAI Shi-qi1,WU Xiang-yang3,YANG Liu-qing3,*   

  1. 1. School of Pharmacy, Jiangsu University, Zhenjiang 212013, China;
    2. School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China;
    3. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
  • Online:2013-09-15 Published:2013-09-27
  • Contact: YANG Liu-qing

摘要:

对火棘果红色素进行提取和纯化,并进行抗氧化活性测定。采用70%乙醇(pH3,HCl)提取火棘果红色素,用pH示差法、福林-肖卡尔法及蒽酮比色法分别测定火棘果红色素粗提物(PFE)及经C18 Sep-Pak柱纯化后的产物(PPFE)中花色苷、总酚和总糖含量;同时测定PPFE对·OH、O2-·、DPPH自由基的清除作用。结果表明:PFE中花色苷含量1.16mg/100g、总酚含量2.18mg/100g、总糖含量1095.34mg/100g;PPFE中花色苷含量20.61mg/100g、总酚含量48.62mg/100g,未检测出总糖含量。PPFE清除·OH、O2-·、DPPH自由基的IC50分别为1.43mg/mL、3.13mg/mL、3.43μg/mL。提示:C18 Sep-Pak柱具有除糖及富集花色苷和总酚的作用,PPFE有较强的抗氧化作用。

关键词: 火棘果, 红色素, 纯化, 抗氧化

Abstract:

Red pigments were extracted with 70% acidified ethanol (pH 3, HCl) and purified by C18 Sep-Pak column
chromatography. The radical scavenging activity of the purified pigments was assessed against •OH, O2
-• and
DPPH radical. The contents of anthocyanins, total phenols and total sugar in the crude extract and the purified product
were determined by pH differential method, Folin-Ciocalteau method and anthrone colorimetric method, respectively.
Results showed that the contents of anthocyanin, total phenols and total sugar in the crude extract were 1.16, 2.18 mg/100 g and
1095.34 mg/100 g, respectively, while those in the purified product were 20.61, 48.62 mg/100 g and 0 mg/100 g,
respectively. The IC50 values of the purified product against •OH, O2
-• and DPPH radical were 1.43, 3.13 μg/mL and
3.43 μg/mL, respectively. These results indicate that the C18 Sep-Pak column chromatography could effectively remove
sugar compounds and concentrate anthocyanins and total phenols in the crude extract. The purified red pigments had a
relatively strong antioxidant capacity.

Key words: Pyracantha fortuneana, red pigment, purify, antioxidant activity

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