How should the product be stored to maintain shelf life?

Keep tightly sealed, store away from moisture, strong heat, and sunlight. Shelf life is 2 years under these conditions.

What are the available application forms?

The extract is available in Paste, Tablet, and Capsule forms, and can also be used in feed.

What is the lead time for shipment?

The lead time is 7-10 days after the order is confirmed.

Antioxidant Allium Cepa L. Onion Extract Quercetin

Name: Antioxidant Allium Cepa L. Onion Extract Quercetin
Brand: Kingherbs Limited
SKU: 2014639045

Hunan, ChinaKingherbs Limited

US$20.00-150.00

1 kg

Sample price:US$0.00/20g.Request sample

Product profile

Customization

Available

Certification

ISO, FDA, HACCP, Kosher, Halal

Assay Method

HPLC, UV

Model NO.

CAS No.: 20229-56-5

Application Form

Paste, Tablet, Capsule

Application

Food, Health Care Products, Medicine

State

Powder

Extract Source

Llium Cepa L.

Botanical Source

Llium Cepa L.

Part Used

Bulb, 100% Natural

Product Name

Onion Extract

Odor & Taste

Characteristic

Loss on Drying

Nmt 12.0%

Ash Content

Nmt 5.0%

Appearance

Fine Yellow Powder with Bit Green

Heavy Metals

Nmt 10ppm

Extract Solvents

Ethanol & Water

Function 1

Treating Acne Effectively.

Function 2

Treat Cardiovascular Disease

Sample

Available

Function 3

Repairing The Natural Texture of Damaged Skin.

Particle Size

80 Mesh

Shelf Life

2 Years

Transport Package

25kg/Drum

Specification

1%-80% quercetin HPLC

Trademark

Kingherbs

Origin

China

HS Code

2938909090

Production Capacity

2000kg

Key features

High Quercetin Content: Assay results confirm NLT 80% Quercetin content via HPLC testing.

Scar Treatment Efficacy: Active ingredient for scar treatment, more effective for prevention than cure.

Multi-Function Health Support: Treats acne, psoriasis, cardiovascular disease, and acts as an antioxidant.

Strict Quality Certification: Certified by ISO, FDA, HACCP, Kosher, and Halal standards.

Safe for All Ages: Unlike steroid creams, safe for application on patients of all ages.

Flexible Customization: Offers flexible customization from samples for various application forms.

Low Minimum Order: Minimum Order Quantity is only 1 KG, suitable for small batch testing.

Fast Lead Time: Standard lead time is 7-10 days after order confirmation.

Company profile

Importers and ExportersYears of Export ExperienceExperienced TeamIn-stock Capacity

Kingherbs Limited

Hunan, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples, Flexible customization CertifiedExport Year: 14 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤8.07h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryKingherbs Limited is identified as a factory and limited company supplying Saw Palmetto Extract. It operates more than 10 production lines, reports plant-extract output of 500 tons, maintains in-stock capacity, and serves domestic and multiple overseas markets. The supplier supports customization from samples and flexible customization, but reports no new products in the past year, no ODM service, and no SDK. It has participated in VITA FOODS EUROPE 2025 but has no overseas agents, branches, warehouses, or showrooms. Service-control documentation is incomplete: no written corrective-action or complaint-handling procedures or records were provided, and the quality-assurance status is unknown. Financial records are indicated for 2022–2024, but their results are not provided. The supplier passed neither a clearly stated audit outcome nor certification details in the available information; the audit result is recorded as 0 without an explained evaluation scale.

Supplier typeThe supplier is explicitly classified as a factory and a limited company, with no indication that it belongs to a larger company group. Its primary product is Saw Palmetto Extract, and the audited company is named Kingherbs Limited.

After-Sales capabilityThe supplier has participated in an offline trade show, but it has no overseas agents or branches, overseas warehouses, or overseas showrooms. More importantly, no written corrective and preventive action procedures or records and no written customer-complaint handling procedures or records were provided, limiting evidence of formal after-sales capability.

R&D capabilityThe supplier reports no new products during the past year, no ODM service, and no available SDK. These explicit limitations indicate weak evidence of ongoing product innovation or software-development support.

Production capacityThe supplier operates more than 10 production lines, reports plant-extract output of 500 tons, has in-stock capacity, and serves domestic and several international markets. It also states an off-peak lead time within 15 working days, although outsourcing procedures and manufacturing contracts are listed as unknown.

Customization capabilityThe supplier explicitly provides customization from samples and flexible customization. This supports a positive assessment for customer-specific product adaptation, although the same slice confirms that ODM service is not available.

Product Q&A

Q:What is the main active ingredient and its content?

The primary active ingredient is Quercetin, with an assay content of NLT 80% as verified by HPLC.

Q:What are the main health benefits of Onion Extract?

It helps repair damaged skin texture, treats acne and psoriasis, supports cardiovascular health, and acts as an antioxidant and anti-inflammatory agent.

Q:Is this product suitable for sensitive skin or all ages?

Yes, unlike steroid creams, it can be applied anywhere on the body and is safe for patients of all ages.

Q:What certifications does the product hold?

The product is certified by ISO, FDA, HACCP, Kosher, and Halal standards.

Q:What is the minimum order quantity (MOQ)?

The Minimum Order Quantity is 1 KG.