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Kingherbs Inc

Products >> Allium Cepae Extract

Allium Cepae Extract

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Description
Product Name: Allium Cepae Extract
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Specifications natural extract
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Total polyphenol and main flavonoid antioxidants in different onion (Allium cepa L.) varieties.
In onion, spiraeoside (quercetin-4¡ä-O-¦Â-D-glucoside), rutin and quercetin and 3 other not identified compounds were found as the major constituents. Significant cultivar differences were found. The most abundant compound was spiraeoside (32 234 mg/kg DM in red onion, 23 283 mg/kg DM in yellow onion and 265 mg/kg DM in white onion).
During storage, an increase in flavonoids could be observed, especially at a laboratory temperature co***red to storage at a lower temperature.
Spiraeoside,Synonym(s): Quercetin 4'-glucoside. Spiraein. Spiraeoside. Spireoside
Cha***n Hall Number: KWD91-S
CAS Registry Number: 20229-56-5
Type of Compound Code(s): VK5250
Molecular Formula: C21H20O12
Molecular Weight: 464.382
Accurate Mass: 464.09548
Percentage Composition: C 54.32%; H 4.34%; O 41.34%
Biological Source: Isol. from Spiraea ulmaria and other plant spp.
Physical Description: Yellow needles (MeOH aq.)
Melting Point: Mp 240-241 (209-210).
We use the red onion for extraction, which contains the highest spiraeoside.

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Contact: Ms. Grace Lee
Address: 2-603, Building 1, Jinniu Xincun
Postcode: 570314
Tel: 86 898 31578189
Fax: 86 898 31578177
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