Allium Cepae Extract Onion Spiraeoside - China

Total polyphenol and main flavonoid antioxidants in different onion

(Allium cepa L.

) varieties.

In onion, spiraeoside (quercetin-4′-O- 46;-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 compared to storage at a lower

temperature.

Spiraeoside Synonym(s): Quercetin 4'-glucoside.

Spiraein.

Spiraeoside.

SpireosideChapman Hall Number: KWD91-SCAS

Registry Number: 20229-56-5Type of Compound Code(s): VK5250Molecular

Formula: C21H20O12Molecular Weight: 464.382Accurate Mass:

464.09548Percentage 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.

Allium Cepae Extract Onion Spiraeoside

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Company Contact:

• Posted By: KING HERBS LIMITED

• Phone: 86073189865683

• Address: 901#, Blding 3, WanShuDanDi, Changsha, Changsha , China

• Email:

• Website: http://www.kingherbs.com.cn

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