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Onion extract,Allium cepa extract

Inquiry
  Post Date: Jun 20,2013
  Expiry Date: Jun 20,2014
  Detailed Description: Cas No. :20229-56-5 Quantity: 20Metric Tons
Specs:10%-30% Spiraeoside
Price:Negotiation USD Metric Tons
Onion Extract

KINGHERBS' Onion Extract aims at total polyphenol and main flavonoid antioxidants in the onion bulb. The main ingredients are as follows,

1. Spiraeoside (quercetin-4′-O-β-D-glucoside),
2. Rutin
3. Quercetin


Spiraeoside:
Synonym(s): Quercetin 4'-glucoside. Spiraein. Spiraeoside. Spireoside
Chapman Hall Number: KWD91-S

Molecular Formula & weight: C21H20O12 ; 464.382

Accurate Mass: 464.09548
Percentage Composition: C 54.32%; H 4.34%; O 41.34%
Physical Description: Yellow needles (MeOH aq.)
Melting Point: Mp 240-241 (209-210)


KINGHERBS choose the right species of onion, and after an intended storage in a special condition, we extract it with only grain ethanol. Thus assure the best quality.

We suggest onion paste extract instead of dry powder extract.

  CAS Registry Number:

20229-56-5
  Synonyms: Spiraeoside;2-(4-(beta-D-Glucopyranosyloxy)-3-hydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one;Quercetin 4'-O-glucoside;Spiraein;Spiraein (Acacia);Spiraeosid;4H-1-Benzopyran-4-one, 2-(4-(beta-D-glucopyranosyloxy)-3-hydroxyphenyl)-3,5,7-trihydroxy-;2-hydroxy-4-(3,5,7-trihydroxy-4-oxo-4H-chromen-2-yl)phenyl beta-D-glucopyranoside;
  Molecular Formula: C21H20O12
  Molecular Weight: 464.3763
  Molecular Structure: 20229-56-5 2-[4-(β-D-glucopyranosyloxy)-3-hydroxyphenyl]-3,5,7-trihydroxy-4H-1-benzopyran-4-one

  Company: KINGHERBS LIMITED     [ China ]        
  Contact: Grace Lee
  Tel: +86-731-82055092
  Fax: +86-731-89865682
  Email: sales@kingherbs.com.cn
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