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Basil (Madagascan)

Húng quế Madagascar

Ocimum gratissimum

Romba, Ramy, Ocimum viride

Lamiaceae · Lá · Leaves · Steam-distilled

Botanical illustration of Ocimum gratissimum, whose leaves yield Basil (Madagascan) essential oil
Basil (Madagascan) essential oil, extracted from the leaves of Ocimum gratissimum. Botanical illustration, Lê Mai Library.

Safety

Potentially carcinogenic · Restricted

Potentially carcinogenic due to high estragole content. May inhibit blood clotting through metabolic constituents.

Should not be taken orally.

Maximum dermal use level 0.2 percent based on 50 percent estragole and a dermal limit of 0.12 percent for estragole.


Usage guidelines

Maximum dermal level
0.2 percent
Oral use
Not recommended
Basis
Estragole 45 – 50 percent

Chemistry

Volatile constituents
Estragole45.0 – 50.0 %
Camphor24.0 – 30.0 %
(+)-Limonene2.0 – 6.0 %
β-Caryophyllene1.0 – 4.0 %
α-Caryophyllene1.0 – 4.0 %
Camphene1.0 – 3.0 %
(E)-β-Ocimene0.5 – 3.0 %
α-Pinenetr, 1.0 %
1,8-Cineoletr, 1.0 %

Botanical source

The estragole/camphor chemotype of Ocimum gratissimum is produced in Madagascar. The folk names romba and ramy are Malagasy.

The eugenol chemotype of the same species is pungent basil, produced in India.

Family Lamiaceae. Botanical synonym Ocimum viride.


Notes

One of the most camphor-rich basil oils. Only usable at heavy dilution.