SCI和EI收录∣中国化工学会会刊

›› 2009, Vol. 17 ›› Issue (3): 478-483.

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Antioxidant and Antimicrobial Activities of Echinacea (Echinacea purpurea L.) Extracts Obtained by Classical and Ultrasound Extraction

Ivana Stanisavljević1, Saša Stojičević2, Dragan Veličković3, Vlada Veljković1, Miodrag Lazić1   

  1. 1. Faculty of Technology, University of Niš, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia;
    2. Chemical Industry Nevena A.D., Djordja Stamenkovića St.,16000 Leskovac, Serbia;
    3. Zdravlje-Actavis, Vlajkova 199, 16000 Leskovac, Serbia
  • 收稿日期:2008-06-25 修回日期:2009-03-19 出版日期:2009-06-28 发布日期:2009-06-28
  • 通讯作者: Ivana Stanisavljević,E-mail:icaneca@gmail.com
  • 基金资助:
    Supported by the Ministry of Science and Environmental Protection,Republic of Serbia (142073B)

Antioxidant and Antimicrobial Activities of Echinacea (Echinacea purpurea L.) Extracts Obtained by Classical and Ultrasound Extraction

Ivana Stanisavljević1, Saša Stojičević2, Dragan Veličković3, Vlada Veljković1, Miodrag Lazić1   

  1. 1. Faculty of Technology, University of Niš, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia;
    2. Chemical Industry Nevena A.D., Djordja Stamenkovića St.,16000 Leskovac, Serbia;
    3. Zdravlje-Actavis, Vlajkova 199, 16000 Leskovac, Serbia
  • Received:2008-06-25 Revised:2009-03-19 Online:2009-06-28 Published:2009-06-28
  • Supported by:
    Supported by the Ministry of Science and Environmental Protection,Republic of Serbia (142073B)

摘要: Antioxidant and antimicrobial activities of Echinacea purpurea L. (Asteraceae) extracts obtained by classical and ultrasound solvent extraction were compared. The dry aerial part of plant was extracted by 70% ethanol at a solid-to-liquid ratio of 1:10 (m/v) and 25℃. The extract obtained by classical solvent extraction contained 29% larger amounts of phenolic compounds and 20% higher content of flavonoids. 2,2-diphenyl-1-picril hydrazyl radical (DPPH) scavenging reached 93.6% and the values of EC50 were (34.16±0.65)μg·ml-1 and (65.48±1.12) μg·ml-1 for the extracts obtained by the classical and ultrasound extractions, respectively. The extracts, independent of the extraction technique applied, showed a considerable growth inhibition on Candida albicans and Saccharomyces cerevisiae, while no growth inhibition zones were observed for Aspergillus niger. The diameters of inhibition zone observed for all the microorganisms were larger for extracts obtained by classical extraction than those by ultrasound extraction.

关键词: antioxidant activity, antimicrobial activity, Echinacea purpurea L., total phenols, flavonoids, extraction

Abstract: Antioxidant and antimicrobial activities of Echinacea purpurea L. (Asteraceae) extracts obtained by classical and ultrasound solvent extraction were compared. The dry aerial part of plant was extracted by 70% ethanol at a solid-to-liquid ratio of 1:10 (m/v) and 25℃. The extract obtained by classical solvent extraction contained 29% larger amounts of phenolic compounds and 20% higher content of flavonoids. 2,2-diphenyl-1-picril hydrazyl radical (DPPH) scavenging reached 93.6% and the values of EC50 were (34.16±0.65)μg·ml-1 and (65.48±1.12) μg·ml-1 for the extracts obtained by the classical and ultrasound extractions, respectively. The extracts, independent of the extraction technique applied, showed a considerable growth inhibition on Candida albicans and Saccharomyces cerevisiae, while no growth inhibition zones were observed for Aspergillus niger. The diameters of inhibition zone observed for all the microorganisms were larger for extracts obtained by classical extraction than those by ultrasound extraction.

Key words: antioxidant activity, antimicrobial activity, Echinacea purpurea L., total phenols, flavonoids, extraction