食品科学

• 工艺技术 • 上一篇    下一篇

插田泡花色苷的振荡提取及抗氧化活性

蒋华梅1,石登红2,王向前3,苟先美1,殷亮平1,杨光琴1   

  1. 1.贵阳学院化学与材料工程学院,贵州 贵阳 550005;2.贵阳学院生物与环境工程学院,贵州 贵阳 550005;
    3.贵阳学院图书馆,贵州 贵阳 550005
  • 出版日期:2014-10-25 发布日期:2014-11-07
  • 基金资助:

    贵州省科技厅、贵阳学院联合基金项目(黔科合J字LKG[2013]13号);
    贵州省教育厅2013年教学内容和课程体系改革重点项目(黔教高发[2013]446号);
    贵州省科技厅、贵阳学院联合基金项目(黔科合J字LKG[2013]04号);贵阳学院院级科研项目(201207)

Mechanical Shaking Extraction and Antioxidant Activity of Anthocyanins from Rubus coreanus Maq. Fruits

JIANG Hua-mei1, SHI Deng-hong2, WANG Xiang-qian3, GOU Xian-mei1, YIN Liang-ping1, YANG Guang-qin1   

  1. 1. College of Chemistry and Material Engineering, Guiyang University, Guiyang 550005, China;
    2. College of Biological and Environmental Engineering, Guiyang University, Guiyang 550005, China;
    3. Library of Guiyang University, Guiyang 550005, China
  • Online:2014-10-25 Published:2014-11-07

摘要:

采用乙醇振荡提取插田泡果实花色苷,通过正交试验筛选花色苷提取的最佳条件,同时对插田泡花色苷的抗氧化活性进行研究。结果显示,体积分数85%乙醇溶液(pH 3)按料液比1∶30(g/mL)在50 ℃条件下振荡提取1 h,同样条件下样品再重复提取,振荡时间 1 h,花色苷提取量达211.05 mg/100 g。在实验范围内,花色苷对2,2’-联氮-双(3-乙基苯并噻吡咯啉-6-磺酸)(2,2’-azinobis-(3-ethylbenzthiazoline-6-sulphonate),ABTS)、二苯代苦味肼基(1,1-diphenyl-2-picrylhydrazyl radical 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl,DPPH)、羟自由基(·OH)均有较强的清除能力,清除率随质量浓度的升高而增大,呈正线性相关;花色苷对不同自由基的抑制能力大小依次为·OH(IC50=1.71 μg/mL)>ABTS+·(IC50=2.27 μg/mL)>DPPH自由基(IC50=3.44 μg/mL),抑制能力均远高于阳性对照VC和二丁基羟基甲苯。结果表明,插田泡花色苷具有显著的抗氧化活性,是一种值得开发的天然抗氧化剂和功能性食品资源。

关键词: 插田泡, 花色苷, 振荡提取, 抗氧化

Abstract:

Mechanical shaking extraction with ethanol was applied to extract anthocyanins from the fruits of Rubus coreanus
Maq., and the optimal extraction conditions were determined by orthogonal array design. An extraction temperature of 50 ℃
and 1 h extraction repeated twice using a 30-fold volume of 85% ethanol aqueous solution containing hydrochloric acid
(pH 3) as the extraction solvent provided optimum extraction of anthocyanins. An anthocyanin yield of 211.05 mg/100 g
was achieved. In addition, the anthocyanins from fresh fruits of Rubus coreanus Maq. were evaluated for their antioxidant
activity. It was found that the anthocyanins displayed dose-dependent reducing power and strong abilities to scavenge
hydroxyl, 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2’-azinobis-(3-ethylbenzthiazoline-6-sulphonate) (ABTS) free
radicals in decreasing order with linear concentration dependence in the concentration range investigated here. The IC50
values for hydroxyl, DPPH and ABTS free radicals were 1.71, 2.27 and 3.44 μg/mL, respectively, indicating much higher free
radical scavenging activity than VC and BHT as positive controls. These results demonstrate that anthocyanins from Rubus
coreanus Maq. possess potent antioxidant activity and thus deserve to be used as natural antioxidants and functional foods.

Key words: Rubus coreanus Maq., anthocyanins, mechanical shaking extraction, antioxidant activity

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