Table 1 Essential oils of therapeutic grade tested and references of their activity or no activity against E. coli strains

Eucalyptus globulus

Blue gum

LT

> 0.5% v/v

[10]

Syzygium aromaticum

Clove

BD

0.24% v/v

[10]

Cinnamomum cassi

Chinese cinnamon

W

0.1% v/v

[11]

Boswellia serrata

Sallaki

R

9.25% v/v

[12]

Lavandula angustifolia

Lavender

FL

1.07% v/v

[13]

Cymbopogon flexuous

Cochin grass

LT

> 0.08% v/v

[14]

Mentha × piperita

Peppermint

LT

0.004% v/v

[15]

Rosmarinus officinalis

Rosemary

LT

0.014% v/v

[4]

Mentha spicata

Spearmint

LT

0.04% v/v

[15]

Melaleuca alternifolia

Tea tree

LT

> 1% v/v

[16]

Citrus racemose

Grapefruit

P

0.63% v/v

[17]

Citrus limonum

Lemon

P

1% v/v

[18]

Citrus aurantifolia

Key lime

P

1% v/v

[19]

Citrus sinensis

Sweet orange

P

0.08% v/v

[20]

Pogostemon cablin

Patchouli

NN

0.05% v/v

[16]

Salvia sclarea

Clary sage

NN

> 53.2% v/v

[21]

Citrus bergamia

Bergamot orange

NN

1% v/v

[18]