The Compositions and Contents of Flavonol Glycosides in Onion (Allium cepa L.) Germplasm

Jung-Ro Lee; Min-Ki Lee; Heon-Woong Kim; Sung-Hyeon Lee; Young-Min Lee; Hwan-Hee Jang; Kyung-A Hwang; Jae-Gyun Gwag; Ho-Cheol Ko; Jung-Bong Kim; Jin-Woong Cho

doi:10.7740/kjcs.2014.59.3.385

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2014 Vol.59, Issue 3 Preview Page

Original Research Article

The Compositions and Contents of Flavonol Glycosides in Onion (Allium cepa L.) Germplasm 양파(Allium cepa L.) 유전자원의 Flavonol 배당체 조성 및 함량

30 September 2014. pp. 385-389

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Abstract

Flavonols as a major kind of plant secondary metabolites are known for health-promoting compounds in onions (Allium cepa L.). The objectives of this study are to determine profiles of flavonol glycosides in different 75 onion accessions. A total of five flavonols (quercetin 3,4'- diglucoside, Q34'diG; quercetin 3-glucoside, Q3G; quercetin 4'-glucoside, Q4'G; isorhamnetin 4'-glucoside, I4'G; quercetin, Q) were identified from onion accessions. In positive ion mode using LC-ESI-MS, individual flavonols were confirmed from one and two glycosylation binding with aglycone such as quercetin and isorhamnetin. Total flavonol contents were distributed in white onion (range of 0.18-6.47 mg/g DW) and purple onion accessions (range of 2.39-6.47 mg/g), respectively. The mean of flavonol contents in purple onion (4.41 mg/g) showed 1.4-fold higher than white onion (3.23 mg/g). The Q34'diG and Q4'G were considered as the major compounds of flavonol glycosides in onion accessions.

Keywords

Allium cepa L.

onion

accessions

flavonol glycosides

quercetin

LC-ESI-MS

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Information

Publisher :The Korean Society of Crop Science
Publisher(Ko) :한국작물학회
Journal Title :The Korean Journal of Crop Science
Journal Title(Ko) :한국작물학회지
Volume : 59
No :3
Pages :385-389
Received Date : 2014-06-04
Accepted Date : 2014-07-21
DOI :https://doi.org/10.7740/kjcs.2014.59.3.385

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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