NDLI: Antibacterial Effects and Mechanism of Mandarin (Citrus reticulata L.) Essential Oil against Staphylococcus aureus

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Antibacterial Effects and Mechanism of Mandarin (Citrus reticulata L.) Essential Oil against Staphylococcus aureus

Content Provider	MDPI
Author	Song, Xueying Liu, Ting Wang, Lei Liu, Liu Li, Xiaoping Wu, Xiaoxia
Copyright Year	2020
Description	Staphylococcus aureus (S. aureus) creates an array of challenges for the food industry and causes foodborne diseases in people, largely due to its strong antibiotic resistance. Mandarin (Citrus reticulata L.) essential oil (MEO) is recognized as a natural and safe preservative; however, the antibacterial effects and mechanism of MEO to combat S. aureus are not yet clearly understood. This study will examine the inhibitory effects of MEO against S. aureus and explore the antibacterial mechanism thereof from the perspective of membrane destruction. The antibacterial activity of MEO on planktonic S. aureus was examined to determine the minimal inhibitory concentration (MIC). Scanning electron microscope (SEM) images revealed the direct impacts of MEO treatment on the cell structure of S. aureus. The cell membrane was observed to be depolarized, the determination of extracellular nucleic acids, proteins and intracellular adenosine triphosphate (ATP) confirmed the increased permeability of the cell membrane, its integrity was destroyed and the cellular constituents had leaked. These results, thus, provided conclusive evidence that MEO constrains the growth of planktonic S. aureus by affecting the permeability and integrity of its cell membrane. Our study provides a basis for the further development and utilization of MEO as a natural antibacterial agent in the food industry.
Starting Page	4956
e-ISSN	14203049
DOI	10.3390/molecules25214956
Journal	Molecules
Issue Number	21
Volume Number	25
Language	English
Publisher	MDPI
Publisher Date	2020-10-26
Access Restriction	Open
Subject Keyword	Molecules Integrative and Complementary Medicine Citrus Essential Oil Staphylococcus Aureus Cell Membrane Food Safety
Content Type	Text
Resource Type	Article

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