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Horticulture, Environment, and Biotechnology

, Volume 59, Issue 6, pp 919–927 | Cite as

Comparison of the antioxidant properties and flavonols in various parts of Korean red onions by multivariate data analysis

  • Mi Jin Park
  • Da Hye Ryu
  • Jwa Yeong Cho
  • In Jong Ha
  • Jin Seong Moon
  • Young-Hwa KangEmail author
Research Report
  • 168 Downloads

Abstract

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.

Keywords

Red Allium cepa L. Antioxidants Principal component analysis Partial least squares discriminant analysis Quercetine 

Notes

Acknowledgements

This research was supported by Golden Seed Project (Center for Horticultural Seed Development, No. 213003-04-3-WTB11), Ministry of Agriculture, Food and Rural Affairs (MAFRA), Ministry of Oceans and Fisheries (MOF), Rural Development Administration (RDA) and Korea Forest Service (KFS). And this work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) [grant number. NRF-2015R1D1A3A01020708].

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Copyright information

© Korean Society for Horticultural Science 2018

Authors and Affiliations

  1. 1.Division of Applied Biosciences, College of Agriculture and Life SciencesKyungpook National UniversityDaeguKorea
  2. 2.Onion Research InstituteGyeongnam Agricultural Research and Extension ServicesChangnyeongKorea

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