华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (12): 116-120.

• 食品科学与技术 • 上一篇    下一篇

超临界CO2 萃取余甘于精油成分及精油抑菌活性

赵谋明 刘晓丽 崔春 罗维   

  1. 华南理工大学 轻工与食品学院,广东 广州 510640
  • 收稿日期:2006-12-11 出版日期:2007-12-25 发布日期:2007-12-25
  • 通信作者: 赵谋明(1964-) ,男,教授,博士生导师,主要从事蛋白质化学与工程、食品生物技术研究. E-mail:femmzhao@ scut. edu. cn
  • 作者简介:赵谋明(1964-) ,男,教授,博士生导师,主要从事蛋白质化学与工程、食品生物技术研究.
  • 基金资助:

    广州市科技攻关项目(2004Z1-E0061 )

Composition and Antimicrobial Activity of Essential Oil from Phyllanthus emblica L. by Supercritical CO2 Extraction

Zhao Mou-ming  Liu XiAo-li  Cui Chun  Luo Wei   

  1. School of Light Industry and Food Sciences , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-12-11 Online:2007-12-25 Published:2007-12-25
  • Contact: 赵谋明(1964-) ,男,教授,博士生导师,主要从事蛋白质化学与工程、食品生物技术研究. E-mail:femmzhao@ scut. edu. cn
  • About author:赵谋明(1964-) ,男,教授,博士生导师,主要从事蛋白质化学与工程、食品生物技术研究.
  • Supported by:

    广州市科技攻关项目(2004Z1-E0061 )

摘要: 用超临界CO2 萃取余甘子精油,采用琼脂平板抑菌法,以山梨酸何为对照,对余甘子精油的抑菌作用进行了研究,并运用GC-MS 法分析鉴定其化学成分.结果表明:超临界CO 2 革取的余甘于精油对枯草芽抱杆菌、金黄色葡萄球菌、大肠埃希氏杆菌、沙门氏菌,啤酒酵母、米曲霉等常见食品污染菌具有很好的抑制作用,其中20MPa 压力下萃取的精油对枯草芽抱杆菌、金黄色葡萄球菌、沙门氏菌、啤酒酵母、米曲霉及黑曲霉的抑制效果优于山梨酸钾;从20MPa 压力萃取的精油中鉴定出30 种化学成分,其中主要成分为β-波旁烯(38.23% )、二十六烷(l7. 2% )、麝香草酚( 10. 94%)、二十五烷(8.51%)、β-丁香烯
(5.39%)、2 , 3-二羟基丙酸(4.36% )、十六烷酸(2.65% )及甲基丁香酚(1. 25% ) ,初步推断甲基丁香酚、β-丁香烯、β-波旁烯和麝香草酚为主要的抑菌成分.

关键词: 余甘于, 精油, 超临界CO2 萃取, 成分, 抑菌活性

Abstract:

The essential oils of emblica fruit were extracted by means of supercritical CO2 extraction (SFE) , and the antimicrobial activity of the product was investigated by using the agar dilution technique , with potassium sorbate as the control. Then , GC-MS was adopted to identify the composition of the product. The results show that ( 1) the extracted oils have a high antimicrobial activity against the original contaminating bacteria such as Bαcillus
subtilis , Stαphylococcus aureus, Escherichia coli , Salmonella , Saccgaromyces cerevisiae and Aspergillus oryzae; (2) Bacillus subtilis , Staphylococcus aureus , Salmonella, Saccgaromyces cerevisiae , Aspergillus oryzae and Aspergillus niger are more sensitive to the oils extracted at 20 MPa than to potassium sorbate; (3) there are thirty compounds in the oils extracted at 20 MPa , mainly including β-bourbonene (38. 23%), hexacosane (17. 2% ), thymol (10.94% ) , pentacosane (8.51 % ) ,β-carγophyllene (5.39%), 2 , 3-dihydroxypropanol (4.36%) , palmitic acid (2.65%) and methyl eugenol (1.25%) ; and (4) the antimicrobial activity of the oils mainly results from the existence of methyl eugenol ,β-caryophyllene ,β-bourbonene and thymol.

Key words: Phyllanthus emblica, essential oil, supercritical CO2 extraction, composition, antimicrobial activity