Abstract
The destructive effect and mode of action of lemon verbena essential oil on cells were investigated, taking the isolated Pseudosciaena D4 as the research object. The extracellular absorbance of the Pseudosciaena D4 increased at OD260 and OD280 after being treated with lemon verbena essential oil, which destroyed the integrity of Pseudosciaena D4 cells, showing a significant effect on preventing biomembrane formation and destroying the formed biomembrane. With an increased concentration of lemon verbena essential oil, extracellular polysaccharide showed a significant decrease in content and a significant increase in inhibition rate, indicating that the secretion of extracellular polysaccharide by Pseudosciaena D4 cells could be inhibited by lemon verbena essential oil during the process of biomembrane formation. Cell introcession and shrinkage appeared after the treatment with essential oil, and a transparent cavity was formed by the out-flowed cell content. Lemon verbena essential oil destroyed the cell wall, resulting in an enhanced permeability of the cell membrane and leakage of the contents, thereby causing cell death.
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