食品科学 ›› 2007, Vol. 28 ›› Issue (9): 107-111.

• 基础研究 • 上一篇    下一篇

乌洋芋色素抑菌活性与清除DPPH·能力研究

 王金华, 曾海英, 秦礼康, 周碧君   

  1. 贵州大学生命科学学院; 贵州大学动物科学学院 贵州贵阳550025; 贵州贵阳550025;
  • 出版日期:2007-09-15 发布日期:2011-11-22

Study on Bacteriostasic Activity and Scavenging DPPH· Capability of Pigment from Purple Potato

 WANG  Jin-Hua, ZENG  Hai-Ying, QIN  Li-Kang, ZHOU  Bi-Jun   

  1. 1.College of Life Science,Guizhou University,Guiyang 550025,China;2.College of Animal Science,Guizhou University,Guiyang 550025,China
  • Online:2007-09-15 Published:2011-11-22

摘要: 对乌洋芋色素抑菌活性与清除DPPH·能力的研究结果表明,乌洋芋色素对枯草芽胞杆菌、金黄色葡萄球菌、都柏林沙门氏菌和大肠杆菌有一定的抑制作用,最低抑菌浓度分别为41.75、25.05、25.05和300.58mg/L;对DPPH·具有较好的清除作用,半清除浓度(EC50)为20.842mg/L。

关键词: 乌洋芋色素; 抑菌; DPPH·,

Abstract: The bacteriostasic activity and scavenging DPPH· capability of the pigment from purple potato was studied.The results showed that the pigment have activity against Bacillus subtilis,Staphylococcus aureus,Salmonelle Dublin and Escherichia coli.The minimum inhibiting contents are 41.75,25.05,25.05 mg/L and 300.58 mg/L,respectively.And the pigment have better scavenging effect on DPPH·.The amount of pigment from purple potato necessary to decrease initial [DPPH·] by 50%(EC50)was 20.842 mg/L.

Key words: pigment from purple potato; bacteriostasic; DPPH·,