フリーベイン
Cúc rận
Conyza canadensis
Canadian fleabane, Horseweed, Fleawort, Erigeron canadensis
Oxidation products of (+)-limonene may sensitize skin.
Store in dark, sealed, refrigerated container. Add an antioxidant.
Likely not hazardous in pregnancy based on (+)-limonene data.
Contains no known carcinogens.
| (+)-Limonene | 56.4 % |
| (Z,Z)-Matricaria methyl ester | 11.5 % |
| (E)-α-Bergamotene | 8.2 % |
| Germacrene D | 5.5 % |
| γ-Curcumene | 2.9 % |
| (E)-β-Ocimene | 2.8 % |
| β-Myrcene | 2.1 % |
| (Z,E)-Matricaria methyl ester | 1.8 % |
| α-Zingiberene | 1.4 % |
| (E)-β-Farnesene | 1.3 % |
Conyza canadensis (synonym Erigeron canadensis) is an annual herb native to North America, now spread globally as a weed. 1 to 2 meters tall, with small cream-white flowers.
The oil is steam-distilled from the flowering plant. Limited availability. The oil is water-white to pale yellow, becoming darker and more viscous with age.
Family Asteraceae.