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Chemical Characteristics, Antimicrobial, and Cytotoxic Activities of the Essential Oil of Egyptian Cinnamomum glanduliferum Bark
Author(s) -
Taha AlShaimaa M.,
Eldahshan Omayma A.
Publication year - 2017
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.201600443
Subject(s) - antimicrobial , eucalyptol , bark (sound) , chemistry , essential oil , staphylococcus aureus , microbiology and biotechnology , traditional medicine , cinnamomum , minimum inhibitory concentration , bacteria , food science , biology , medicine , cassia , ecology , genetics , alternative medicine , traditional chinese medicine , pathology
The essential oil isolated from the bark of Cinnamomum glanduliferum ( Wall ) Meissn grown in Egypt was screened for its composition as well as its biological activity for the first time. The chemical composition was analyzed by GC and GC/MS. The antimicrobial activity of the oil was assessed using agar‐well diffusion method toward representatives for each of Gram ‐positive bacteria, Gram ‐negative bacteria, and fungi. The cytotoxic activity was checked using three human cancer cell lines. Twenty seven compounds were identified, representing 99.07% of the total detected components. The major constituents were eucalyptol (65.87%), terpinen‐4‐ol (7.57%), α ‐terpineol (7.39%). The essential oil possessed strong antimicrobial activities against Escherichia coli , with an activity index of one and minimum inhibitory concentration ( MIC ) equaling to 0.49 μg/ml. The essential oil possessed good antimicrobial activities against methicillin‐resistant Staphylococcus aureus , Geotrichum candidum , Pseudomonas aeruginosa, Bacillus subtilis , Helicobacter pylori, Aspergillus fumigatus ( MIC : 7.81, 1.95, 7.81, 0.98, 31.25, and 32.5 μg/ml, respectively). A considerable activity was reported against S. aureus and Mycobacterium tuberculosis ( MIC ; 32.5 and 31.25 μg/ml, respectively). The extracted oil was cytotoxic to colon (HCT‐116), liver (HepG2), and breast (MCF‐7) carcinoma cell lines with IC 50 of 9.1, 42.4, and 57.3 μg/ml, respectively. These results revealed that Egyptian Cinnamomum glanduliferum bark oil exerts antimicrobial and cytotoxic activities mainly due to eucalyptol and other major compounds.