食品科学 ›› 2010, Vol. 31 ›› Issue (5): 180-183.doi: 10.7506/spkx1002-6300-201005040

• 生物工程 • 上一篇    下一篇

旋链角毛藻活性物质的提取及抑菌作用研究

王 芹1,刘 超2,张少君2,孙利芹2,王长海1,2,*   

  1. 1.大连理工大学环境与生命学院 2.烟台大学海洋学院
  • 收稿日期:2009-04-29 修回日期:2009-09-30 出版日期:2010-03-01 发布日期:2010-12-29
  • 通讯作者: 王长海 E-mail:chwang2001@sina.com
  • 基金资助:

    山东省自然科学基金项目(Y2008B21)

Extraction and Antimicrobial Effect of Active Components from Chaetoceros curvisetus

WANG Qin1,LIU Chao2,ZHANG Shao-jun2,SUN Li-qin2,WANG Chang-hai1,2,*   

  1. (1. School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China;
    2. School of Ocean, Yantai University, Yantai 264005, China)
  • Received:2009-04-29 Revised:2009-09-30 Online:2010-03-01 Published:2010-12-29
  • Contact: WANG Chang-hai1 E-mail:chwang2001@sina.com

摘要:

首先用杯碟法考察旋链角毛藻粗脂肪提取物、多酚提取物、萜类提取物和水提取物分别对4 种细菌和4 种真菌的抑菌活性;进而通过气相色谱法鉴定粗脂肪提取物的脂肪酸含量与组成,并推测其抑菌活性成分;最后测定旋链角毛藻石油醚提取物的最低抑菌浓度。结果表明:旋链角毛藻的粗脂肪提取物、多酚提取物和萜类提取物对供试菌株均有不同程度的抑制作用,石油醚提取的粗脂肪抑菌效果最明显,水提取物无抑菌作用;各种提取物对细菌的生长抑制作用普遍强于真菌,对革兰氏阴性菌的生长抑制效果尤为明显;只有石油醚提取物含有反式亚油酸、γ- 亚麻酸和二十碳二烯酸等8 种不饱和脂肪酸,因此推测旋链角毛藻中起抑菌作用的主要是这类弱极性多不饱和脂肪酸。

关键词: 旋链角毛藻, 抗菌活性, 粗脂肪, 多酚, 萜类

Abstract:

Antimicrobial activities of crude lipid, polyphenol, terpenoid and water extracts obtained from Chaetoceros curvisetus were evaluated by cylinder plate method. In order to identify the contribution of active components to antimicrobial activity, gas chromatography was used for the characterization of different polar lipid extracts. The minimum inhibitory concentration of petroleum ether extract was also determined. Results indicated that crude lipid, polyphenol and terpenoid extracts exhibited different antimicrobial activities. Petroleum ether extract revealed the strongest antimicrobial activity, and water extract exhibited no antimicrobial activity. All extracts also exhibited stronger inhibitory effect against bacteria than against fungi, especially against gram-negative bacteria. Eight kinds of polyunsatured fatty acids including trans-linoleic acid, γ-linolenic acid, and cis-11,14-eicosadienoic acid were determined in petroleum ether extract, which suggested that the antibacterial components were weakly polar polyunsaturated fatty acids.

Key words: Chaetoceros curvisetus, antimicrobial activities, crude lipid, ployphenol, terpenoid

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