Một dự án của Lê Mai A Lê Mai project · go to lemai.com.vn

Karo karoundé

Karo Karounde

Leptactina senegambica

Rubiaceae · Hoa · Flowers · Solvent extraction (absolute)

Karo karoundé essential oil (Leptactina senegambica) — botanical illustration
Leptactina senegambica

Safety

Benzyl cyanide

Contains benzyl cyanide (4.8 percent).

Maximum dermal use level 0.2 percent, based on IFRA's 0.01 percent dermal limit for benzyl cyanide.

Benzyl cyanide is prohibited in fragranced products in the EU. IFRA permits it from essential oils provided finished-product level does not exceed 100 ppm (0.01 percent).

No irritation or sensitization at 1 percent test level. Non-phototoxic.

Although benzyl cyanide is moderately toxic (rat oral LD50 270 mg per kg), organic cyanides are much less toxic than inorganic cyanides like HCN.


Usage guidelines

Maximum dermal level
0.2 percent
Basis
Benzyl cyanide 4.8 percent

Chemistry

Volatile constituents
Benzyl cyanide4.8 %
2-Phenylnitroethane1.1 %
Isoeugenol0.5 %
Other constituents (>230 total)Minor

Botanical source

Leptactina senegambica is a small shrub of Senegal and Gambia, West Africa, with distinctly aromatic flowers. The name 'karo karoundé' comes from Wolof.

The absolute is solvent-extracted from the flowers. Very limited availability.

Family Rubiaceae. Same family as coffee and gardenia.

Joulain & Laurent (1986) recorded approximately 230 constituents in karo karoundé absolute, one of the most complex essential oils.