Journal of Integrative Agriculture ›› 2016, Vol. 15 ›› Issue (9): 2175-2181.DOI: 10.1016/S2095-3119(16)61385-0

• 论文 • 上一篇    

  

  • 收稿日期:2015-11-20 出版日期:2016-09-02 发布日期:2016-09-02

Quantification and analysis of anthocyanin and flavonoids compositions, and antioxidant activities in onions with three different colors

ZHANG Shi-lin, DENG Peng, XU Yu-chao, LÜ Shan-wu, WANG Jian-jun   

  1. State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, P.R.China
  • Received:2015-11-20 Online:2016-09-02 Published:2016-09-02
  • Contact: WANG Jian-jun, Tel: +86-25-84395756 E-mail: wangjianjun@njau.edu.cn
  • About author:ZHANG Shi-lin, Mobile: +86-15921734483, E-mail: 709744424@qq.com;
  • Supported by:

    This study was financially supported by the Special Fund for Agro-scientific Research in the Public Interest, China (20090318), and the Yangzhou Agricultural Science and Technology Research Projects, China (YZ2014170).

Abstract:     Onion (Allium cepa L.) is a very important vegetable crop widely cultivated throughout the world. In this study, we measured total anthocyanins and flavonols of onions of three colors. The fresh weight (FW) of total anthocyanins were (29.99±1.19), (9.64±1.30) and (0.75±0.40) mg 100 g–1 fruit in red, yellow and white onions, respectively. Likewise, the FW of total flavonoids were (111.10±5.98), (36.64±3.59), and 0 mg 100 g–1 in red, yellow and white, respectively. Four types of anthocyanins (delphinidin 3,5-diglycosides, cyanidin 3,5-diglycosides, cyanidin 3-glycosides and cyanidin 3-(6´´-malonyl)-glucopyranoside) and two kinds of flavonoids (quercetin and quercetin 3-glycosides) were identified in two varieties (red and yellow bulb) of onions by HPLC/DAD-ESI/MS. The total polyphenol contents were also measured by means of Folin-Ciocalteu method. Moreover, all the concentrations of anthocyanins, flavonoids and polyphenols showed significantly positive correlations with antioxidant activities measured by DPPH˙, ABTS˙+ and FRAP assays. This study provided information on anthocyanin and flavonoids compositions that will be useful for onion breeding.

Key words: onion (Allium cepa L.) ,  anthocyanins ,  flavonoids ,  antioxidant activity ,  HPLC-DAD-ESI/MS