Table 4 Inhibition parameters of essential oils and aromatic extracts and SARS-CoV-2 Mpro and PLpro.

From: Evaluation of the anti-SARS-CoV-2 properties of essential oils and aromatic extracts

Natural material

SARS-CoV-2 Mpro IC50 (µg/mL)

SARS-CoV-2 PLpro IC50 (µg/mL) ([µM])

Essential oils

Petitgrain mandarin EO

 > 100

22.9 ± 4.6

DMA

 > 100

5.20 ± 1.22 (31.5 ± 7.4)

Guaiacwood EO

48.01 ± 4.51

Blue cypress EO

48.22 ± 3.02

Lovage root EO

70.86 ± 4.65

Siam wood EO

76.10 ± 1.23

Extracts

Benzoin Siam resinoid

5.24 ± 0.22

Benzoin Sumatra resinoid

4.20 ± 0.15

Galbanum resinoid

34.52 ± 2.27

Storax resinoid

46.31 ± 3.52

Turmeric oleoresin

12.01 ± 1.31

96.15 ± 2.09

Labdanum gum refined

47.44 ± 1.60

Nasturtium absolute

72.79 ± 1.12

Rocket absolute

3.41 ± 0.32

Rocket concrete

4.79 ± 0.04

Tasmania lanceolata extract

49.98 ± 1.99