Benefits
Culinary herb listed for US food and flavoring use
Federal rules list chervil (Anthriscus cerefolium) among spices and other natural seasonings and among essential oils and natural extractives generally recognized as safe for their intended use in food. That status covers seasoning and flavoring amounts, not concentrated extracts or supplement doses taken daily.
Minerals and vitamins in the dried herb
USDA data for dried chervil list, per 100 g, about 1,346 mg calcium, 32 mg iron, 4,740 mg potassium, 274 mcg folate and 50 mg vitamin C. A tablespoon weighs only about 1.9 g, so a typical seasoning amount supplies roughly 0.6 mg iron and 26 mg calcium. The entry gives no vitamin K value.
Vitamin C in young chervil microgreens
In a controlled environment growing study of four carrot family microgreens, chervil and dill had similar total vitamin C (about 151 mg per 100 g fresh weight), higher than anise and caraway, and chervil was highest in manganese. Chervil had the lowest total polyphenols of the four. These are young seedlings, not the mature leaf sold as a herb.
Polyphenols including caffeoylquinic acids and apiin
Garden chervil grown in Norway held about 1,260 mg gallic acid equivalents of phenolics per 100 g dry matter. Its main phenolic was a newly described malonyl dicaffeoylquinide, alongside apiin (a sugar-bound form of apigenin) and luteolin 7-glucoside. A methanol extract in a separate lab analysis contained 72 identified phenolics, led by caffeoylquinic acids.
Antioxidant activity of chervil extracts in lab tests
Lab work only. Standardized water extracts of chervil herb and root showed hydrogen-donating, metal-binding, reducing, free radical scavenging and membrane protective activity in test-tube assays, and the herb extract outperformed the root extract in every test. Whether eating chervil changes antioxidant status in people has not been studied.
Microbial, enzyme and cell tests of a chervil extract
Lab work only. A methanol extract of chervil was active against selected bacteria and fungi, inhibited several enzymes in test-tube assays, showed anti-inflammatory activity in a skin cell infection model and showed cytotoxic activity in tumor cell line tests. Extract concentrations in a dish do not show what culinary amounts do in the body.
Mechanism of action
Phenolic compounds as test-tube antioxidants
Chervil's caffeoylquinic acids and flavone glycosides such as apiin are the compounds linked to the radical scavenging and lipid peroxidation results of its extracts. These effects were measured in chemical assays and cell cultures, not in people.
Estragole needs liver activation to become reactive
Estragole in chervil oil is thought to cause tumors in rodents after cytochrome P450 enzymes and sulfotransferases convert it into a reactive, genotoxic metabolite. Because of this, the European Medicines Agency advises keeping estragole exposure from herbal medicines as low as practically achievable.
Whole-herb matrix and estragole effects in liver cells
In human liver cancer cells, pure methyl chavicol (estragole) raised oxidative stress and altered CYP2E1, iNOS and Mn-SOD, while fresh chervil, tarragon and basil extracts did not. The authors suggest other herb compounds may counteract it. The EMA notes such matrix effects are possible but not yet enough to set a safe threshold.
Clinical trials
In vitro study of standardized aqueous extracts of chervil herb and root, testing hydrogen-donating, metal binding, reducing, free radical scavenging and membrane protective activity, with apiin as the reference compound. (Fejes et al. 2000, J Ethnopharmacol)
No participants; in vitro assays only.
Both extracts showed antioxidant and anti-lipoperoxidant activity, and the herb extract was more active than the root extract in every test. The study did not test whether eating chervil affects antioxidant status in people.
Chemical profiling by LC-HRMS/MS of a methanolic extract of Anthriscus cerefolium, with antimicrobial tests (six bacteria, eight fungi), six antioxidant assays, five enzyme inhibition assays, cytotoxicity in keratinocytes and tumor cell lines, a cell model of bacterial inflammation, molecular docking and KEGG pathway analysis. (Stojkovic et al. 2024, Fitoterapia)
No participants; human cell lines (HaCaT, SiHa, MCF7, HepG2) and microbial cultures.
Seventy-two phenolics were identified, led by malonyl-1,4-O-dicaffeoylquinic acid and 3,5-O-dicaffeoylquinic acid. The extract showed antimicrobial, antioxidant, enzyme-inhibiting, cytotoxic and anti-inflammatory activity in these lab tests. The authors suggest the compounds deserve further research; no animal or human testing was done.
Cell study comparing pure methylchavicol (estragole) with extracts of fresh tarragon, chervil and basil on oxidative stress (luminol-dependent chemiluminescence) and on CYP2E1, iNOS, Cu/Zn-SOD and Mn-SOD expression in the HepG2 human hepatoma cell line. (Bidri et al. 2012, Ann Pharm Fr)
No participants; HepG2 human liver cancer cells grown in culture.
Pure methylchavicol significantly raised oxidative stress and markedly altered CYP2E1, iNOS and Mn-SOD expression. Under similar conditions the tarragon, chervil and basil extracts did not cause these changes. This is a single cell-line study and does not establish that estragole in chervil is harmless in people.