Hermetica Superfood Encyclopedia
The Short Answer
Chicoric acid is a phenolic compound primarily found in Echinacea species that demonstrates antioxidant activity through free radical scavenging mechanisms. Despite traditional use for immune support, no clinical trials have established proven health benefits in humans.
CategoryNamed Bioactive Compounds
GroupCompound
Evidence LevelModerate
Primary Keywordchicoric acid benefits
Synergy Pairings3
Chicoric Acid (Phenolic Acid) — botanical close-up
Health Benefits
Origin & History
Natural habitat
Chicoric acid is a phenolic acid compound formed by esterification of tartaric acid with two caffeic acid molecules, naturally occurring in Echinacea species, chicory leaves, and basil. It is extracted using ethanol-water mixtures (optimized at 60% ethanol:40% water) or produced via chemical synthesis from protected tartaric and caffeic acid derivatives.
“Chicoric acid was first isolated from chicory (Cichorium intybus) leaf decoction in 1958. No specific traditional medicine systems or historical therapeutic uses are documented in the available research.”Traditional Medicine
Scientific Research
No human clinical trials, randomized controlled trials, or meta-analyses for chicoric acid were found in the research dossier. The compound lacks clinical evidence despite being isolated from chicory in 1958.
Preparation & Dosage
Traditional preparation
No clinically studied dosage ranges have been established for chicoric acid in any form. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Chicoric acid is a pure phenolic compound (dicaffeoyl-tartaric acid), not a macronutrient source. Molecular weight: 474.37 g/mol. It is a diester of caffeic acid and tartaric acid, containing two caffeic acid moieties linked to a tartaric acid backbone. As an isolated compound, it contains no protein, fat, fiber, vitamins, or minerals. Bioactive concentration in source plants: Echinacea purpurea aerial parts contain approximately 0.5–3.3% chicoric acid by dry weight; chicory (Cichorium intybus) leaves contain roughly 1–4 mg/g dry weight; fresh basil (Ocimum basilicum) contains approximately 14.9–19.3 mg/g dry weight, making it one of the richest dietary sources. In lettuce (Lactuca sativa), concentrations range from 0.5–2.5 mg/g dry weight. Bioavailability is limited due to ester bond susceptibility to intestinal esterases and gut microbiota metabolism; chicoric acid is partially hydrolyzed to caffeic acid and tartaric acid in the gastrointestinal tract before absorption. Plasma bioavailability of intact chicoric acid is low (estimated <5% of ingested dose in animal models); metabolites including caffeic acid and dihydrocaffeic acid are the primary circulating forms detected in human plasma after dietary intake. Antioxidant capacity measured at approximately 3.5–4.2 mmol Trolox equivalents/g by DPPH assay in vitro.
How It Works
Mechanism of Action
Chicoric acid functions as an antioxidant by donating electrons to neutralize reactive oxygen species and free radicals through its phenolic hydroxyl groups. The compound may interact with inflammatory pathways by potentially modulating nuclear factor-kappa B (NF-κB) signaling, though this mechanism remains theoretical in humans. Its molecular structure allows for metal chelation, which could contribute to its antioxidant capacity.
Clinical Evidence
Currently, no human clinical trials have specifically evaluated chicoric acid as an isolated compound for any health condition. The available research consists primarily of in vitro antioxidant assays and animal studies examining Echinacea extracts containing chicoric acid. Traditional ethnobotanical use suggests immune-supporting properties, but this evidence lacks scientific validation through controlled human trials. The absence of clinical data makes it impossible to establish effective dosages or quantified health outcomes.
Safety & Interactions
Safety data for isolated chicoric acid is limited due to the lack of human studies. As a component of Echinacea preparations, it appears generally well-tolerated in healthy adults when used short-term. Potential interactions with immunosuppressive medications are theoretically possible given traditional immune-related claims, though no documented cases exist. Pregnant and breastfeeding women should avoid chicoric acid supplements due to insufficient safety data.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
2,3-dicaffeoyltartaric aciddicaffeoyltartaric acidDCTAchicory acidL-chicoric acidtartaric acid dicaffeate2R,3R-dicaffeoyltartaric acid
Frequently Asked Questions
What foods contain chicoric acid naturally?
Chicoric acid is found primarily in Echinacea species, particularly E. purpurea and E. angustifolia. It also occurs in smaller amounts in radicchio, dandelion leaves, and some varieties of lettuce.
How much chicoric acid is in Echinacea supplements?
Echinacea supplements typically contain 0.5-2.5% chicoric acid by weight, though concentrations vary significantly between products and plant parts used. Standardized extracts may contain higher concentrations, but exact amounts are rarely disclosed on labels.
Can chicoric acid boost immune function?
While chicoric acid is traditionally associated with immune support through Echinacea use, no clinical trials have proven immune-boosting effects in humans. The immune-related claims are based solely on traditional use and theoretical mechanisms.
What's the difference between chicoric acid and chlorogenic acid?
Chicoric acid is a caffeic acid derivative found primarily in Echinacea, while chlorogenic acid is found in coffee beans and green tea. Both are phenolic compounds with antioxidant properties, but they have different molecular structures and plant sources.
Are there any side effects of chicoric acid supplements?
Specific side effects of isolated chicoric acid are unknown due to lack of human studies. When consumed as part of Echinacea preparations, mild gastrointestinal upset and allergic reactions have been reported in sensitive individuals.
Is chicoric acid safe during pregnancy and breastfeeding?
There are no human clinical studies evaluating the safety of chicoric acid supplements during pregnancy or breastfeeding, making it impossible to establish safe dosage levels for these populations. Women who are pregnant or nursing should consult their healthcare provider before using Echinacea products or other supplements containing chicoric acid. Traditional use does not provide sufficient evidence to confirm safety in these sensitive periods.
Does chicoric acid interact with medications like antibiotics or immunosuppressants?
Limited research exists on potential drug interactions with chicoric acid specifically, though Echinacea products containing it may interact with immunosuppressant medications and some antibiotics. Since chicoric acid's bioactivity in humans remains unconfirmed, the clinical significance of these potential interactions is unclear. Anyone taking prescription medications should inform their healthcare provider before adding chicoric acid supplements to their regimen.
What is the most bioavailable form of chicoric acid—fresh plant, extract, or standardized supplement?
No comparative bioavailability studies exist for different forms of chicoric acid in humans, so the most absorbable format cannot be definitively determined. Chicoric acid is a water-soluble phenolic compound, suggesting potential loss during heat processing, though this remains theoretical without human absorption data. Standardized extracts guarantee consistent chicoric acid content, but this does not necessarily equate to superior bioavailability compared to whole-plant sources.
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