Antibacterial Activity of Essential Oil Components and Their Potential Use in Seed Disinfection

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• 作者：Pietro Lo Cantore ; Vellasamy Shanmugaiah ; Nicola Sante Iacobellis
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2009
• 出版时间：October 28, 2009
• 年：2009
• 卷：57
• 期：20
• 页码：9454-9461
• 全文大小：785K
• 年卷期：v.57,no.20(October 28, 2009)
• ISSN：1520-5118

文摘

Among the main (≥0.7%) components of some essential oils, considerable antibacterial activity was shown by terpenoid and phenylpropanoid derivatives containing phenol and alcohol functionalities. A reduced or no activity was shown by those derivatives containing ketones, aldehydes, ethers, and ester functionalities as well as the remaining terpenoids. Eugenol emulsion treatments (1−8 mg/mL) of bean seeds bearing about 2.6 × 10⁶ cfu/seed of strain ICMP239 of Xanthomonas campestris pv. phaseoli var. fuscans determined a highly significant reduction of the bacteria on seeds. In particular, eugenol at 4 mg/mL disinfect seeds bearing about 7.0 × 10² cfu/seed and lower densities. However, after 72 h, incubation treatments with 2, 4, and 8 mg/mL of eugenol caused germination reduction of 3%, 7%, and 16%, respectively, which was significantly different from the controls. No effect on germination was observed with 1 mg/mL eugenol emulsion treatment. These data indicate eugenol as potentially useful for bean seed disinfection from X. campestris pv. phaseoli var. fuscans. Further studies on the effects on seed vitality and on formulation of essential oils are needed.