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Table 4 Effect of altitude on the MIC/MLC of the essential oils of S. thymbra essential oils obtained from Wasita (WEO) and Safsaf (SEO) localities during two successive years

From: Altitude impact on the chemical profile and biological activities of Satureja thymbra L. essential oil

Test Organisms

Minimum inhibitory and bactericidal concentrations (MIC/MLC, μg/mla)

WEO (W1)

WEO (W2)

SEO (S1)

SEO (S2)

Gram positive organisms

Staphylococcus aureus ATCC 6538

0.25/0.313

0.188/0.25

0.125/0.25

0.125/0.25

Bacillus subtilis ATCC 6051

0.313/0.375

0.25/0.313

0.188/0.25

0.125/0.25

Gram negative organisms

Escherichia coli ATCC 8739

0.25/0.25

0.188/0.25

0.25/1

0.25/1

Pseudomonas aeruginosa ATCC 9027

1/> 1.5

> 1.5/> 1.5

1/1

1/> 1.5

Proteus mirabilis ATCC 7002

0.188/0.25

0.188/0.25

0.125/0.25

0.125/0.25

Klebsiella pneumoniae ATCC 13883

0.125/0.375

0.125/0.375

0.125/0.25

0.125/0.25

Fungi

Candida albicans ATCC 10231

0.125/0.25

0.125/0.25

0.25/0.25

0.125/0.25

Aspergillus niger ATCC 16888

1/1

1/1

1/> 1.5

1//> 1.5

  1. aValues are mean resuts of three replicates
  2. W1 and W2 are plants collected from Wasita during fall 2017 and 2018, respectively. S1 and S2 are plants collected from Safsaf during fall 2017 and 2018, respectively