Chemical Composition Analysis of Essential Oil from Mosla chinensis Maxim. cv. Jiangxiangru and Inhibitory Activity of the Oil and Its Major Constituents on Biofilm Formation of Staphylococcus aureus

doi:10.7506/spkx1002-6630-201614024

Abstract

Abstract:

Objective: To analyze the chemical composition of the essential oil from Mosla chinensis Maxim. cv.
Jiangxiangru and to examine the inhibition of the oil and its main components on the biofilm formation of Staphylococcus
aureus. Methods: The chemical composition analysis was carried out by gas chromatography-mass spectrometry (GCMS).
The inhibitory effects of the essential oil and its eight main components were examined against the biofilm formation
of Staphylococcus aureus. Results: A total of 29 chemical compositions were identified in the essential oil. Its main
components were thymol, carvacrol, p-cymene, γ-terpenene, thymyl acetate, α-caryophyllene, 3-carene, and carvacryl
acetate. The percentage inhibition of the biofilm formation of Staphylococcus aureus by the essential oil reached 91.3%,
although scavenging only 78.5% of the mature biofilm of Staphylococcus aereus. Carvacrol, 3-carene, carvacryl acetate and
α-caryophyllene showed obvious inhibition against the formation of Staphylococcus aureus biofilms. Among these, 3-carene
was the most effective inhibitor with a percentage inhibition of 93.9%. On the other hand, both p-cymene and thymyl acetate
were able to significantly scavenge the mature biofilm of Staphylococcus aureus. Conclusion: The essential oil from Mosla
chinensis Maxim. cv. Jiangxiangru possessed a very strong inhibitory effect on the biofilm formation of Staphylococcus
aureus. Moreover, it also could scavenge the mature biofilm of Staphylococcus aureus. This may be a result of the combined
effects of several components in the essential oil.

Key words: Mosla chinensis Maxim. cv. Jiangxiangru, essential oil, gas chromatography-mass spectrometry (GC-MS) analysis, Staphylococcus aureus biofilms, inhibition

CLC Number:

LI Zhimin, WANG Mei, PENG Liang. Chemical Composition Analysis of Essential Oil from Mosla chinensis Maxim. cv. Jiangxiangru and Inhibitory Activity of the Oil and Its Major Constituents on Biofilm Formation of Staphylococcus aureus[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201614024.

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