Chemical composition,antioxidant and antimicrobial activity of the essential oil from the leaves of Macleaya cordata (Willd) R. Br. |
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| Authors: | Chun-Mei Li Xiao-Yong Yang Yi-Rong Zhong |
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| Affiliation: | 1. Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P.R. China;2. Institute of Biochemistry and Nutrition, Guizhou University, Guiyang 550025, P.R. China;3. Quality Supervision and Measure Station, Tobacco Company of Guizhou Province, Guiyang 550025, P.R. China |
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| Abstract: | The essential oil from the leaves of Macleaya cordata R.Br. obtained by hydrodistillation was analysed by gas chromatography/mass spectrometry. Sixty-eight compounds consisting of up to 92.53% of the essential oil were identified. Antioxidant activities of the essential oil were evaluated by using DPPH radical scavenging and β-carotene–linoleic acid assays. The essential oil showed moderate antioxidant activity. In addition, the essential oil exhibited potential antimicrobial activity against all tested microorganisms, with diameters of inhibition zones ranging from 8.7 ± 0.5 to 17.2 ± 1.2 mm and minimum inhibitory concentration values from 125 to 500 μg/mL. We selected the most sensitive bacterium Staphylococcus aureus as model to observe of the action of essential oils of M. cordata on the membrane structure by scanning electron microscopy. The treated cell membranes were damaged severely. The results presented here indicate that the essential oil of M. cordata may be potential sources of antioxidant and antimicrobial agents in the future. |
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| Keywords: | Macleaya cordata essential oil chemical composition antioxidant activity antimicrobial activity |
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