食品科学 ›› 2011, Vol. 32 ›› Issue (5 ): 115-118.doi: 10.7506/spkx1002-6630-201105026

• 基础研究 • 上一篇    下一篇

山核桃壳棕色素生物活性及其红外光谱分析

陈 晓1,叶 明1,*,陈 炜1,杨 柳1,方 勇2,詹权胜2   

  1. 1.合肥工业大学生物与食品工程学院 2.安徽詹氏食品有限公司
  • 收稿日期:2010-06-30 修回日期:2011-02-13 出版日期:2011-03-15 发布日期:2011-03-03
  • 通讯作者: 叶明 E-mail:yeming123@sina.com
  • 基金资助:
    安徽省科技攻关计划重大项目(09010301022)

Antioxidant and Antimicrobial Activities and Infrared Spectroscopic Analysis of Brown Pigment from Hickory Shell

CHEN Xiao1,YE Ming1,*,CHEN Wei1,YANG Liu1,FANG Yong2,ZHAN Quan-sheng2   

  1. 1. School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China;
    2. Anhui Zhanshi Food Co. Ltd., Ningguo 242300, China
  • Received:2010-06-30 Revised:2011-02-13 Online:2011-03-15 Published:2011-03-03
  • Contact: YE Ming E-mail:yeming123@sina.com

摘要: 用体积分数95%乙醇提取山核桃壳棕色素,经AB-8大孔树脂纯化后,对其生物活性及红外光谱进行研究。结果表明:质量浓度为3.0g/L时,山核桃壳棕色素的总抗氧化能力相当于126.65mmol/L α-生育酚;棕色素还原能力的EC50值(吸光度为0.5时的质量浓度)为0.286g/L;质量浓度为1.0g/L时,棕色素对·OH的清除率达到60.84%。抑菌实验表明:山核桃壳棕色素对酿酒酵母(Saccharomyces cerevisiae)、金黄色葡萄球菌(Staphylococcus aureus)、枯草芽孢杆菌(Bacillus subtilis)、大肠杆菌(Escherichia coli)、黑曲霉(Aspergillus niger)均有抑制作用,最低抑菌浓度分别为0.125、0.25、0.25、1.0、0.5g/L。红外光谱分析结果表明:该棕色素含有苯环和酚羟基结构。

关键词: 山核桃壳, 棕色素, 生物活性, 最低抑菌浓度

Abstract: Brown pigment extracted from hickory shell with 95% alcohol and purified on AB-8 macroporous resin column was subjected to evaluation of antioxidant and antimicrobial activities and infrared spectroscopic analysis. The results showed that the total antioxidant capacity of the brown pigment at a concentration of 3.0 g/L was equivalent to 126.65 mmol/L α-tocopherol. The EC50 value (the effective concentration at which the absorbance was 0.5) of reducing power for the pigment was 0.286 g/L. The scavenging rate against hydroxyl free radicals reached 60.84 % at 1.0 g/L. The MIC (minimum inhibitory concentration) values of antibacterial effects on Saccharomyces cerevisiae, Staphylococcus aureus, Bacillus subtilis, Escherichia coli and Aspergillus niger were 0.125, 0.25, 0.25, 1.0 g/L and 0.5 g/L, respectively. IR spectral analysis revealed the presence of benzene ring and phenolic hydroxyl in the pigment.

Key words: hickory shell, brown pigment, biological activities, minimum inhibitory concentration

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