Hermetica Superfood Encyclopedia
The Short Answer
Cyanidin-3-glucoside is an anthocyanin flavonoid that activates Nrf2 antioxidant pathways and modulates glucose metabolism. This bioactive compound demonstrates anti-inflammatory effects by reducing pro-inflammatory cytokine production.
CategoryNamed Bioactive Compounds
GroupCompound
Evidence LevelModerate
Primary Keywordcyanidin-3-glucoside benefits
Synergy Pairings3
Cyanidin-3-glucoside (Anthocyanin) — botanical close-up
Health Benefits
Origin & History
Natural habitat
Cyanidin-3-glucoside (C3G) is an anthocyanin compound naturally found in pigmented fruits and plants including black beans (Phaseolus vulgaris), berries, mulberries, and red grapes, where it serves as the pigment responsible for red, purple, and blue colors. Commercial extraction typically involves solvent-based methods from plant sources like black bean seed coats, followed by purification processes.
“The research dossier indicates no historical or traditional medicine uses specifically for C3G. It is referenced only as a naturally occurring bioactive compound from anthocyanin-rich plants, with focus on modern research applications rather than traditional medicinal systems.”Traditional Medicine
Scientific Research
Human clinical evidence is limited to one pharmacokinetic study using black bean seed coat extract over 2 weeks, confirming absorption with no serious adverse events. Systematic reviews note promising results from 16 diabetic rodent studies but emphasize the critical need for human randomized controlled trials, as no RCTs or meta-analyses on efficacy outcomes were identified.
Preparation & Dosage
Traditional preparation
Human dosage data is limited to one pharmacokinetic trial using black bean seed coat extract for 2 weeks (specific C3G content not quantified). No standardized dosage ranges have been established from human clinical trials. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Cyanidin-3-glucoside (C3G) is a pure polyphenolic compound (anthocyanin subclass), not a whole food, so traditional macronutrient/micronutrient profiling does not apply. Key compositional data: Molecular weight 449.2 g/mol; chemical formula C21H21O11+. Bioactive concentration in food sources varies significantly — blueberries contain approximately 0.1–0.5 mg/g fresh weight, black rice bran 0.5–3.0 mg/g dry weight, elderberries 0.4–1.0 mg/g fresh weight, and blackcurrants 0.3–0.8 mg/g fresh weight. As an isolated compound, it is 100% bioactive anthocyanin with no fat, protein, or fiber content. Bioavailability is notably low and variable: oral bioavailability estimates range from 0.1–1.8% in human studies, with peak plasma concentrations (Cmax) typically reaching 1–50 nmol/L after dietary intake. Absorption occurs primarily in the stomach and small intestine via bilitranslocase and glucose transporters (SGLT1, GLUT2). Extensive first-pass metabolism converts C3G to protocatechuic acid and phloroglucinol aldehyde, which are the primary circulating metabolites contributing to systemic effects. Co-ingestion with dietary fat or vitamin C has been shown to modestly improve absorption by approximately 15–20%. Stability is pH-dependent — degradation accelerates above pH 6, limiting small intestinal absorption. Half-life in plasma is approximately 1.5–2 hours post-ingestion.
How It Works
Mechanism of Action
Cyanidin-3-glucoside activates the Nrf2 transcription factor pathway, enhancing cellular antioxidant enzyme production and reducing oxidative DNA damage. The compound modulates glucose metabolism through insulin signaling pathway enhancement and reduces inflammatory responses by inhibiting NF-κB-mediated cytokine release. These molecular mechanisms contribute to its protective effects against metabolic dysfunction and oxidative stress.
Clinical Evidence
Animal studies demonstrate that cyanidin-3-glucoside achieved glucose reduction in 87.5% of diabetic rodent models, indicating strong preclinical efficacy for metabolic regulation. Preclinical research shows activation of Nrf2 antioxidant pathways and reduction of pro-inflammatory markers in laboratory settings. However, comprehensive human clinical trials are currently lacking, limiting the translation of these promising animal results to human applications. The existing evidence base requires expansion with randomized controlled trials in human populations.
Safety & Interactions
Cyanidin-3-glucoside appears generally well-tolerated based on its natural occurrence in berries and other foods. No significant adverse effects have been reported in animal studies at therapeutic doses. Potential interactions with diabetes medications may occur due to glucose-lowering effects, requiring medical supervision for diabetic patients. Safety data during pregnancy and lactation is insufficient, warranting caution in these populations.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
C3GCyanidin 3-O-glucosideCyanidin-3-O-β-D-glucopyranosideKuromaninChrysantheminCyanidin 3-monoglucosideAnthocyanidin glucoside
Frequently Asked Questions
What foods contain cyanidin-3-glucoside naturally?
Cyanidin-3-glucoside is abundant in dark berries including blackcurrants, elderberries, and blueberries. Red grapes, cherries, and purple cabbage also contain significant concentrations of this anthocyanin compound.
How much cyanidin-3-glucoside should I take daily?
No standardized human dosage exists for cyanidin-3-glucoside supplements due to limited clinical trials. Animal studies used doses equivalent to 50-200mg daily in humans, but medical consultation is recommended before supplementation.
Can cyanidin-3-glucoside lower blood sugar levels?
Animal studies show cyanidin-3-glucoside reduced glucose levels in 87.5% of diabetic rodent models through enhanced insulin signaling. However, human clinical trials are needed to confirm these glucose-lowering effects in people.
Does cyanidin-3-glucoside interact with diabetes medications?
Cyanidin-3-glucoside may potentiate glucose-lowering effects of diabetes medications based on animal research showing insulin pathway activation. Diabetic patients should consult healthcare providers before combining this compound with metformin or insulin.
How long does cyanidin-3-glucoside take to work?
Animal studies suggest cyanidin-3-glucoside activates Nrf2 antioxidant pathways within hours of administration. Glucose regulation effects appeared within 2-4 weeks of consistent dosing in diabetic rodent models, though human timelines remain unknown.
What is the difference between cyanidin-3-glucoside and other anthocyanins?
Cyanidin-3-glucoside is a specific anthocyanin subtype where cyanidin (the aglycone) is bound to glucose, making it more stable and water-soluble than its parent compound. This glycosylation allows for better absorption in the small intestine compared to non-glycosylated anthocyanins. While other anthocyanins like pelargonidin and delphinidin have similar antioxidant properties, cyanidin-3-glucoside shows particular potency in activating Nrf2 pathways for oxidative stress modulation.
Is cyanidin-3-glucoside safe for pregnant or nursing women?
There is insufficient human clinical data on cyanidin-3-glucoside safety during pregnancy and lactation, so supplementation is not recommended during these periods without medical supervision. While cyanidin-3-glucoside is found naturally in foods like berries, concentrated supplement dosages have not been adequately studied in pregnant populations. Women who are pregnant or nursing should consult their healthcare provider before taking anthocyanin supplements.
Does bioavailability of cyanidin-3-glucoside differ between fresh foods and supplements?
Cyanidin-3-glucoside in fresh foods (berries, red cabbage) exists within complex food matrices that may affect absorption, though the native glucose conjugation supports intestinal uptake. Supplement forms are concentrated and standardized, potentially delivering higher bioavailable amounts per dose than equivalent food portions, but processing and formulation methods significantly impact actual absorption rates. Individual factors like gut microbiota composition and digestive health also influence how much cyanidin-3-glucoside reaches systemic circulation from either source.
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