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

• Published in: Horticulture, environment and biotechnology Vol. 59; no. 6; pp. 919 - 927
• Main Authors: Park, Mi Jin, Ryu, Da Hye, Cho, Jwa Yeong, Ha, In Jong, Moon, Jin Seong, Kang, Young-Hwa
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 01.12.2018; Springer Nature B.V; 한국원예학회
• Subjects: 2,2-diphenyl-1-picrylhydrazyl; Agriculture; Allium cepa; Anthocyanins; antioxidant activity; Antioxidants; Biomedical and Life Sciences; Data analysis; Data processing; Flavonoids; Flavonols; High-performance liquid chromatography; Life Sciences; Liquid chromatography; Multivariate analysis; Onions; Phenols; Plant Breeding/Biotechnology; Plant Ecology; Plant Physiology; Properties (attributes); Quercetin; Research Report; Scavenging; Skin; 농학; Red; Antioxidants; Quercetine; Partial least squares discriminant analysis; L; Principal component analysis
• ISSN: 2211-3452; 2211-3460
• DOI: 10.1007/s13580-018-0091-2

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.