食品科学 ›› 2013, Vol. 34 ›› Issue (23): 138-141.doi: 10.7506/spkx1002-6630-201323029

• 基础研究 • 上一篇    下一篇

黑木耳黑色素组分分析及其抗氧化活性研究

邹 宇1,尹冬梅2,冮 洁1,杜雄伟1,刘程惠1,顾振新3,*   

  1. 1.大连民族学院生命科学学院,辽宁 大连 116600;2.上海应用技术学院生态技术与工程学院,上海 201418;
    3. 南京农业大学食品科技学院,江苏 南京 210095
  • 收稿日期:2012-12-23 修回日期:2013-11-13 出版日期:2013-12-15 发布日期:2014-01-03
  • 通讯作者: 顾振新 E-mail:yuz163@163.com
  • 基金资助:

    大连民族学院博士启动基金项目(110015)

Composition Analysis and Antioxidant Activity of Auricularia auricula Melanin

ZOU Yu1,YIN Dong-mei2,GANG Jie1,DU Xiong-wei1,LIU Cheng-hui1,GU Zhen-xin3,*   

  1. 1. College of Life Science, Dalian Nationalities University, Dalian 116600, China;
    2. School of Ecological Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
    3. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
  • Received:2012-12-23 Revised:2013-11-13 Online:2013-12-15 Published:2014-01-03
  • Contact: GU Zhen-xin E-mail:yuz163@163.com

摘要:

将发酵法制备的黑木耳黑色素采用Sephadex G-100柱层析,得到两组分F1和F2,分子质量分别为404.97kD和20.69kD。两组分的紫外-可见光谱与其他黑色素相似,红外色谱和元素分析表明两者均由OH、NH2、C=O、C=C、CH、CH2以及芳环基团组成,且除C、H、N和O元素外,还含有S元素,属于棕黑色素。F1比F2更趋近于黑色,但溶解性和氧化还原性相同。黑色素两组分均具有较强的抗氧化能力,1.0mg/mL质量浓度的F1和F2溶液超氧阴离子自由基清除率超过80%,羟自由基清除率接近40%。

关键词: 黑木耳, 黑色素, 分离鉴定, 理化性质, 抗氧化活性

Abstract:

By Sephadex G-100 column separation, components F1 and F2 of A. auricula melanin were obtained with
molecular weights of 404.97 kD and 20.69 kD, respectively. The UV-visible spectra of both melanin components were
very similar to that of the typical melanin. The IR spectra indicated that the structural composition of F1 and F2 included
OH, NH2, C=O, C=C, CH, CH2 and aromatic groups. Elemental composition analysis showed that F1 and F2 belonged to
phaeomelanin due to S element besides C, H, N and O elements. F1 was darker than F2, but both of them possessed the same
solubility and redox properties. They exhibited a strong antioxidant activity. When used at a concentration of 1.0 mg/mL, the
superoxide radical-scavenging activity exceeded 80% and the hydroxyl radical scavenging activity was close to 40%.

Key words: Auricularia auricula, melanin, isolation and identification, physicochemical properties, antioxidant activity

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