Chemical Composition and Antibacterial Activity of the Essential Oil from Chinese Wild Ledum palustre L. on Vibrio Parahaemolyticus

Objectives: To study the chemical components and antibacterial activity of essential oil from the aerial parts of Ledum palustre L. which were collected in Daxing’anling area of north-eastern China, in September 2014. Methods: The subcritical fluid extraction technology (SFE) was used to isolate the essential oil from the plant’s samples. Micro-SPE and GC-MS methods were applied to the identification of oil components and determination of their content in the essential oil. The antimicrobial activity of the essential oil was tested against the marine pathogen Vibrio parahaemolyticus at incubation of 37 oC. Results: The yield of extract from the aerial parts was 5.31%. The main constituents found were α-thujenal (22.48%), bicyclocompounds(18.72%), β-phellandrene(10.25%), benzene,1-methyl-3-(1-methylethyl)-(6.59%), propanal,2-methyl-3-phenyl(4.01%) and β-terpineol (3.04%). The essential oil from L.palustre at concentration of 5 g/L can inhibit the growth of V.parahaemolyticus obviously. Conclusion: This is the first report of an inhibitory activity of essential oil of L.palustre on the pandemic strain of V.parahaemolyticus in seawater. *Corresponding author: Liangliang Zhang, Jiangsu Province Biomass Energy and Materials Laboratory, Nanjing 210042, China; Tel: +86 25 85482463; Fax: +86 25 85482463; E-mail: [email protected] Received Date: December 16, 2016 Accepted Date: January 29, 2017 Published Date: February 03, 2017