Hunan, China
Business Type:
Manufacturer/Factory, Trading Company
Registered Capital:
500000000 USD
Plant Area:
>2000 square meters
Management System Certification:
ISO 9001
Average Lead Time:
Peak season lead time: within 15 workdays
Off season lead time: within 15 workdays
OEM/ODM Service
Sample Available
Overseas Agent / Branch

Allium Cepa Extract, Spiraeoside, Quercetin 4′-Glucoside manufacturer / supplier in China, offering Onion Extract Quercetin 10%, 40%, Polyphenol 30%, 100% Natural Wild White Willow Bark Extract, High Quality Holy Basil Extract 10: 1 and so on.

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Supplier Homepage Products Standard Herbal Extract Onion Extract Quercetin 10%, 40%, Polyphenol 30%

Onion Extract Quercetin 10%, 40%, Polyphenol 30%

Get Latest Price
Min. Order / Reference FOB Price
25 kg US $35-70/ kg
Port: Changsha, China
Production Capacity: 10000kg
Payment Terms: T/T, Western Union, Paypal
Certification: ISO, FDA, Kosher
Assay Method: HPLC
Application Form: Paste, Tablet, Capsule
Application: Health Care Products, Medicine
State: Powder
Botanical Source: Allium Cepa L.

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Basic Info

Model NO.
CAS No.: 20229-56-5
Transport Package
25kg Per Drum
Spiraeoside 10%~30%, polyphenol 30%
HS Code
Onion Extract

Botanical Source: Allium Cepa L.

In onion,spiraeoside (quercetin-4′-O-β-D-glucoside),rutin and quercetin and 3 other not identified compounds were found as the major constituents. Significant cultivar differences were found in total polyphenol and main flavonoid antioxidants. And during storage, an increase in flavonoids could be observed, especially at a laboratory temperature (22°C) compared to storage at a lower temperature.
KINGHERBS' onion extract aims at total polyphenol and main flavonoid antioxidants in the onion bulb. The main ingredients are the following:
Ingredientsmg/kg in red onionmg/kg in yellow onionmg/kg in white onion

KINGHERBS choose the right species of onion, and after an intended storage in a special condition to increase its active ingredients, we extract it with only grain ethanol. Thus assure us the best quality,with highest spiraeoside and flavonoids.The Onion extract is hard to be dried into solid,KINGHERBS offer mainly onion paste extract instead of dry powder extract.
Onions are good for Psoriasis treatment,it is a good substitute for steroids. The anti-oxidant, anti-inflammatory and healing characteristics of the onion help recuperate the natural texture of damaged skin, and unlike steroid creams,can be applied anywhere on the body and used by patients of all ages.It also proves effective in treating acne.
Onion extract can be used in feed as source of polyphenol & flavonoids in large quantity.

Any interested, pls kindly contact with me:

Tel/Fax:  +86 731 8986 5681 ext 866
Cell: +86 15802624125
Welcome to visit us at the following exhibitions in 2019:
1.  Vitafoods Europe 2019 ( Geneva, Switzerland): May 7-9,Booth No.:J213.
2.  SupplySide West 2019 (Las Vegas, USA): Oct 17-18,Booth No.:5710.


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