Hermetica Superfood Encyclopedia
The Short Answer
Baicalein is a bioactive flavonoid compound primarily extracted from Scutellaria baicalensis (Chinese skullcap) root. It demonstrates antioxidant properties through inhibition of oxygen radical formation and shows preliminary anti-cancer effects by inhibiting ornithine decarboxylase enzyme activity.
CategoryNamed Bioactive Compounds
GroupCompound
Evidence LevelStrong
Primary Keywordbaicalein benefits
Synergy Pairings3
Baicalein (Flavonoid) — botanical close-up
Health Benefits
Origin & History
Natural habitat
Baicalein is a trihydroxyflavone flavonoid (C15H10O5) with hydroxy groups at positions 5, 6, and 7, primarily extracted from the roots of Scutellaria baicalensis (Chinese skullcap) in the Lamiaceae family. It is produced via a specialized 4′-deoxyflavone biosynthetic pathway in plant roots, involving enzymes that convert chrysin to baicalein, and is typically extracted using ethanol or methanol solvents.
“Baicalein, as a major flavonoid in Scutellaria baicalensis roots, has been used in Traditional Chinese Medicine preparations for anti-inflammatory, antibacterial, antiviral, and antitumor purposes. It appears in formulations like PC-SPES, though specific historical timelines for baicalein isolation are not documented.”Traditional Medicine
Scientific Research
No human clinical trials, RCTs, or meta-analyses specifically for baicalein were identified in the available research. The evidence is limited to in vitro and animal model studies, with some indirect observations from PC-SPES herbal extracts containing baicalin (baicalein's precursor) for prostate cancer applications.
Preparation & Dosage
Traditional preparation
No clinically studied dosage ranges for baicalein have been established due to absence of human trials. Preclinical studies used commercial baicalein at 98% purity, while herbal extracts like PC-SPES contained baicalin at approximately 6% of the ethanol-soluble fraction. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Baicalein (5,6,7-trihydroxyflavone) is a pure flavonoid compound (molecular weight: 270.24 g/mol), not a whole food, and therefore carries no macronutrient, fiber, protein, or caloric profile in the conventional nutritional sense. Bioactive compound identity: 100% baicalein when in isolated/purified form. Naturally occurs in the root of Scutellaria baicalensis (Chinese skullcap) at concentrations of approximately 10–15% dry weight of the root extract, and in Scutellaria lateriflora at lower concentrations (~0.1–1% dry weight). Also found in smaller amounts in Oroxylum indicum seeds. As a pure aglycone flavonoid, it contains three hydroxyl groups at positions 5, 6, and 7 on the A-ring of the flavone backbone, which are directly responsible for its antioxidant and chelating activities (Fe²⁺ oxidation enhancement). Bioavailability: Baicalein is the aglycone form of baicalin (its glucuronide precursor); intestinal and hepatic metabolism converts baicalin to baicalein via β-glucuronidase enzymes in gut microbiota. Oral bioavailability of pure baicalein is relatively low (~2–4% in some animal studies) due to rapid phase II metabolism (glucuronidation and sulfation), first-pass hepatic metabolism, and poor aqueous solubility (~0.2 mg/mL in water). Peak plasma concentration (Cmax) reported in animal models at doses of 50 mg/kg reaches approximately 0.5–2 µg/mL. Lipophilicity (logP ≈ 2.4) allows moderate membrane permeability. No vitamins, dietary minerals, or fiber content applicable. Co-administration with piperine or lipid-based formulations has been shown experimentally to enhance absorption.
How It Works
Mechanism of Action
Baicalein inhibits ornithine decarboxylase, a rate-limiting enzyme in polyamine biosynthesis that regulates cell proliferation and cancer development. The compound exhibits antioxidant activity by scavenging oxygen radicals and enhancing Fe²⁺ oxidation through electron donation. It may also modulate various signaling pathways involved in apoptosis and cell cycle regulation in cancer cells.
Clinical Evidence
Current evidence for baicalein is limited to preliminary in vitro studies and mechanistic research. Laboratory studies on prostate cancer cells have shown inhibition of cell proliferation, though specific sample sizes and quantified outcomes are not widely reported. Mechanistic studies demonstrate measurable antioxidant activity through radical scavenging assays. Human clinical trials investigating therapeutic dosages and safety profiles are lacking, making clinical efficacy uncertain.
Safety & Interactions
Safety data for baicalein supplementation in humans is limited due to lack of comprehensive clinical trials. Potential side effects and optimal dosing ranges have not been established through controlled studies. Drug interactions are poorly characterized, though flavonoids may theoretically affect cytochrome P450 enzyme activity. Pregnant and breastfeeding women should avoid baicalein supplements due to insufficient safety data.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
5,6,7-TrihydroxyflavoneBaicalein 5,6,7-trihydroxyflavoneScutellaria flavonoidHuang Qin flavonoidChinese skullcap flavonoidWogonin analog
Frequently Asked Questions
What is the difference between baicalein and baicalin?
Baicalein is the aglycone form of the flavonoid, while baicalin is the glucuronide conjugate form. Baicalin is converted to baicalein in the body through enzymatic hydrolysis, with baicalein being the more bioactive form.
What foods contain baicalein naturally?
Baicalein is primarily found in Scutellaria baicalensis (Chinese skullcap) root, which is used in traditional Chinese medicine. Small amounts may be present in other Scutellaria species, but dietary sources are extremely limited compared to supplemental extracts.
How much baicalein should I take daily?
No standardized dosage has been established for baicalein supplements due to lack of human clinical trials. Research studies have used varying concentrations in laboratory settings, but safe and effective human dosages remain undetermined.
Can baicalein help with inflammation?
While baicalein shows anti-inflammatory properties in laboratory studies through inhibition of inflammatory enzymes and pathways, human clinical evidence is lacking. Its antioxidant activity may theoretically reduce oxidative stress-related inflammation, but clinical confirmation is needed.
Is baicalein safe to take with medications?
Potential drug interactions with baicalein are poorly studied and unknown. As a flavonoid compound, it may theoretically affect drug metabolism through cytochrome P450 enzymes, so consultation with healthcare providers is recommended before combining with medications.
What does research say about baicalein's effectiveness for cancer prevention?
Current evidence for baicalein and cancer is limited to laboratory (in vitro) studies showing it may inhibit proliferation of prostate cancer cells, but human clinical trials are lacking. These preliminary mechanistic findings cannot yet be translated to cancer prevention or treatment recommendations in people. More robust clinical research is needed before baicalein can be considered evidence-based for any cancer-related application.
How does baicalein work as an antioxidant at the molecular level?
Baicalein functions as an antioxidant primarily through two mechanisms: inhibiting the formation of oxygen-derived free radicals and enhancing the oxidation of ferrous iron (Fe²⁺), which prevents iron-catalyzed radical generation. These biochemical actions help protect cells from oxidative stress, though most supporting evidence comes from in vitro studies rather than human trials. The practical antioxidant benefit in whole-body physiology remains to be established in clinical research.
Is baicalein suitable for long-term supplementation?
Limited safety data exists for long-term baicalein supplementation in humans, and most safety information comes from traditional herbal use rather than rigorous clinical studies. While baicalein is generally recognized as tolerable in short-term use, individuals considering ongoing supplementation should consult a healthcare provider, particularly if they have liver conditions or take medications metabolized by the liver. Standardized dosing guidelines and long-term safety profiles have not been established in peer-reviewed clinical literature.
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