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Table 7 Comparative minimum bactericidal and fungicidal concentrations (mg/ml) of CEOs against microbial isolates

From: Bioactivity of Citrus essential oils (CEOs) against microorganisms associated with spoilage of some fruits

Isolates A B C A + B A + C B + C A  +  B + C
Saccharomyces cerevisiae 75 100 > 100 75 100 > 100 75
Candida tropicalis 75 100 > 100 50 100 100 75
Candida krusei 50 25 50 25 50 50 25
Kluyveromyces marxianus 75 75 100 75 75 75 75
Torulopsis fragaria 0.0 0.0 0.0 0.0 0.0 0.0 > 100
Pichia kluyveri 25 50 75 25 25 50 25
Pichia fermentans 50 50 50 25 25 25 25
Pichia anomala 50 50 50 25 25 25 25
Geotrichum candidum 50 50 75 25 75 75 50
Zygosaccharomyces rouxii > 100 > 100 > 100 > 100 > 100 > 100 > 100
Zygosaccharomyces bailii > 100 > 100 > 100 > 100 > 100 > 100 > 100
Aspergillus niger 100 100 > 100 50 75 100 50
Aspergillus flavus > 100 > 100 > 100 > 100 > 100 > 100 > 100
Aspergillus fumigatus 100 100 > 100 50 75 75 50
Aspergillus parasiticus 100 100 100 100 100 100 100
Mucor piriformis 50 75 50 75 50 50 50
Mucor racemosis 50 75 50 75 50 75 50
Fusarium oxysporum 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Fusarium avenaceum > 100 > 100 0.0 > 100 > 100 0.0 > 100
Fusarium solani > 100 > 100 > 100 100 100 100 75
Penicillium digitatum 25 25 50 12.5 25 25 12.5
Penicillium expansum 25 25 25 25 25 25 25
Rhizopus oryzae 100 100 > 100 75 > 100 > 100 75
Rhizopus stolonifer 100 100 > 100 75 > 100 > 100 75
Alternaria alternata 75 50 50 75 75 75 50
Bacillus cereus 25 25 50 25 25 25 25
Micrococcus luteus 75 50 75 50 75 75 50
Streptococcus uberis 50 50 100 25 50 50 25
Bacillus subtilis 25 25 50 25 25 25 25
Proteus vulgaris 50 50 50 50 50 50 25
Serratia marcescens 100 100 100 50 50 50 50
Streptococcus agalactiae 25 50 50 50 50 50 25
Pseudomonas aeruginosa 12.5 12.5 50 12.5 25 25 25
Erwinia cacticida 25 25 75 25 50 50 25
  1. A—lime oil, B—lemon oil, C—grapefruit oil, 0.0—no inhibition detected when ≥ 100 mg/ml was used