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Nasturtium

Sen cạn

Tropaeolum majus

Indian cress, Tropaeolum

Tropaeolaceae · Hoa và lá · Flowers and leaves · Solvent-extracted (absolute)


Nasturtium essential oil (Tropaeolum majus) — botanical illustration
Tropaeolum majus

Safety

Benzyl isothiocyanate · Pregnancy restricted

Benzyl isothiocyanate comprises 72 percent. Mild reproductive toxicity at high doses in rat studies.

Recommendation: maximum daily oral dose in pregnancy and breastfeeding 8.7 mg. Maximum dermal use in pregnancy 0.26 percent.

General maximum dermal use 0.5 percent.

Benzyl isothiocyanate has anticarcinogenic activity.


Usage guidelines

Maximum dermal level
0.5 percent
In pregnancy
Dermal 0.26 percent, oral 8.7 mg/day
Storage
Dark, sealed, refrigerated

Chemistry

Volatile constituents
Benzyl isothiocyanate72.3 %
Benzyl cyanide5.0 – 12.0 %
Benzyl alcohol1.0 – 5.0 %
Benzaldehyde0.5 – 2.0 %

Botanical source

Tropaeolum majus is a flower commonly grown in European gardens. The flowers are orange, red, or yellow, and edible. The plant originates from South America (Andes of Peru, Bolivia).

The absolute is extracted from flowers and leaves. Very limited production.

Family Tropaeolaceae.


Notes

Fresh leaves and flowers are eaten in salads, with a mild mustard-like pungency, from glucotropaeolin converting to benzyl isothiocyanate when chewed.

In perfumery, nasturtium absolute is a special green-spicy note, niche.