Onion Bulb Extract Powder – 10% Quercetin (Allium cepa)

Onion extract is prepared from the bulb and skin of Allium cepa, one of the richest dietary sources of the flavonol quercetin. Standardized grades are valued as a food-derived source of quercetin for antioxidant and seasonal wellness formulas.

Supplied as a standardized botanical extract powder with a declared marker-compound assay for batch-to-batch consistency.

GUTINS Onion Extract — 10% quercetin is offered for manufacturers, formulators and brands. Specification: 10% quercetin; form / technology: Standardized extract; diet suitability: Plant-based.

Product Specifications

Key Benefits

• Food-derived source of quercetin
• Provides antioxidant flavonoids
• Supports healthy cardiovascular function
• Supports seasonal respiratory and immune wellness
• Contains organosulfur compounds

Uses & Applications

Typical applications: Antioxidant.

• Antioxidant capsules and tablets
• Seasonal and immune support formulas
• Heart health blends
• Quercetin complexes with bromelain or vitamin C
• Functional food and savoury seasoning blends
• Greens and superfood powders

How to Use / Dosage

• Typical daily intake: 500-1,000 mg/day of extract (typically delivering 50-500 mg quercetin)
• Typical use level: 5-30% in capsule and tablet fills; 0.05-0.5% in foods and beverages
• Formulation tip: Standardized extracts are best dosed on the basis of the marker assay stated on the CoA.
• Weigh accurately and pre-blend small quantities with a carrier (e.g. maltodextrin, MCC or rice flour) for uniform distribution.
• Final dosage should be based on the lot-specific Certificate of Analysis, the target serving size and the rules of your destination market.

Solubility & Formulation

Ratio extracts are water-soluble to dispersible; high-quercetin grades are poorly soluble in water and soluble in ethanol

Storage & Handling

Store tightly closed in a cool, dry place (below 25 °C) away from light and moisture.. Keep container tightly closed; use clean, dry utensils. Shelf life is typically 24 months in unopened original packaging (see CoA).

Regulatory Note

Onion is a common food (GRAS as spice/flavouring); extracts are marketed as dietary ingredients in the US. Verify quercetin intake limits and permitted claims in the destination market.

Diet suitability: Plant-based. This product is supplied as a raw ingredient for further manufacturing and is not a finished consumer product. The buyer is responsible for ensuring the ingredient, its use level and all label claims comply with the regulations of the destination market (e.g. FDA, EFSA, FSSAI, Health Canada, TGA).

Caution & Disclaimer

• May interact with anticoagulants and drugs metabolized by CYP enzymes (quercetin content)
• Allergen potential for Allium-sensitive individuals
• Can cause GI discomfort or onion odour
• Not established for use in pregnancy at high quercetin doses

For manufacturing, formulation and professional use only. Not for direct consumption in concentrated form. Keep out of reach of children. Avoid inhalation of dust and contact with eyes; use suitable PPE when handling. Consult a qualified healthcare professional before use if pregnant, nursing, taking medication or managing a medical condition. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Bulk & Wholesale Orders

Need more than 5 Kg, a custom specification, private label support or documentation (CoA, TDS, SDS, allergen and GMO statements)? Contact the GUTINS team for bulk pricing and lead times.