Journal
HORTICULTURE ENVIRONMENT AND BIOTECHNOLOGY
Volume 59, Issue 6, Pages 919-927Publisher
KOREAN SOC HORTICULTURAL SCIENCE
DOI: 10.1007/s13580-018-0091-2
Keywords
Red Allium cepa L; Antioxidants; Principal component analysis; Partial least squares discriminant analysis; Quercetine
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Funding
- Golden Seed Project (Center for Horticultural Seed Development) [213003-04-3-WTB11]
- Ministry of Agriculture, Food and Rural Affairs (MAFRA)
- National Research Foundation of Korea (NRF) - Korea government (MEST) [NRF-2015R1D1A3A01020708]
- Ministry of Oceans and Fisheries (MOF)
- Rural Development Administration (RDA)
- Korea Forest Service (KFS)
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To compare the antioxidant properties and flavonols in various parts; dry skin (DS) and edible portion (EP), of 8 red onions (Allium cepa L, ROs), total content of phenolics (TPC), flavonoids (TFC), and anthocyanins (TAC) and DPPH radical scavenging properties were estimated and the content of six flavonols were quantified by HPLC-PDA analysis. The major component of DS and EP of RO was quercetin and quercetin-4-glucoside, respectively. Score plots of the PCA and PLS-DA were segregated by flavonols content and antioxidant properties according to the EP and DS of ROs. Loading plot of the PCA showed that the quercetin and sum of flavonol content were highly correlated with antioxidant activity of ROs. Therefore, flavonol content and antioxidant activity can be used as markers for distinct parts of ROs.
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