Table 1 Antifungal activity score (AAS), botanical identification and main compounds identified for the most active essential oils.

From: The antifungal potential of (Z)-ligustilide and the protective effect of eugenol demonstrated by a chemometric approach

Botanical identification*

Antifungal Activity Score (AAS)

Main compounds

Backhousia citriodora (c)

7

(E)-Citral (geranial, 53.1%); (Z)-Citral (neral, 43.3%)

Cymbopogon citratus (c)

10

(E)-Citral (geranial, 47.6%); (Z)-Citral (neral, 34.4%)

Cymbopogon citratus (l, sample 1)

9

(E)-Citral (geranial, 50.4%); (Z)-Citral (neral, 34.6%)

Cymbopogon citratus (l, sample 2)

8

(E)-Citral (geranial, 49.5%); (Z)-Citral (neral, 32.3%)

Leptospermum petersonii (c)

5

(E)-Citral (geranial, 32.6%); (Z)-Citral (neral, 29.8%)

Levisticum officinale (c)

11

(Z)-Ligustilide (79.8%)

Melissa officinalis (c)

5

(E)-Citral (geranial, 28.4%); (Z)-Citral (neral, 18.8%)

Pelargonium graveolens var2 (c)

5

(−)-Citronellol (22.8%)

Pimenta racemosa (l)

5

Eugenol (57.4%)

Protium heptaphyllum (l)

10

Limonene (90.0%)

Sphagneticola trilobata (l)

5

α-Pinene (77.1%)

Syzygium aromaticum (c)

8

Eugenol (85.7%); Eugenyl acetate (11.2%)

Thymus vulgaris var1 (c)

12

Thymol (56.8%)

  1. The antifungal activity score is calculated based on the measured minimum inhibitory concentrations (MICs), according to the following scheme: >512 µg/mL = 0; 512 µg/mL = 1; 256 = 2; 128 = 3; 64 = 4. The final score is obtained by adding together the values obtained for each fungal strain.
  2. *(c): commercial; (l): laboratory.
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