Type

Journal Article

Authors

Dilip K. Rai
Mohammad Hossain
Michael Gaffney
Joseph P. Kerry
Kim Reilly
Feiyue Ren

Subjects

Agriculture & Food Science

Topics
organic agriculture classification glucosides flavonols growth development plant extracts antioxidants onions chemistry quercetin

Higher Antioxidant Activity, Total Flavonols, and Specific Quercetin Glucosides in Two Different Onion (Allium cepa L.) Varieties Grown under Organic Production: Results from a 6-Year Field Study. (2017)

Abstract We carried out a 6-year study to assess the effect of conventional, organic, and mixed cultivation practices on bioactive compounds (flavonoids, anthocyanins) and antioxidant capacity in onion. Total flavonoids, total anthocyanins, individual flavonols, individual anthocyanins, and antioxidant activity were measured in two varieties ('Hyskin' and 'Red Baron') grown in a long-term split-plot factorial systems comparison trial. This is the first report of repeated measurements of bioactive content over an extensive time period in a single crop type within the same trial. Antioxidant activity (DPPH and FRAP), total flavonol content, and levels of Q 3,4' D and Q 3 G were higher in both varieties under fully organic compared to fully conventional management. Total flavonoids were higher in 'Red Baron' and when onions were grown under organic soil treatment. Differences were primarily due to different soil management practices used in organic agriculture rather than pesticide/ herbicide application.
Collections Ireland -> Teagasc -> PubMed

Full list of authors on original publication

Dilip K. Rai, Mohammad Hossain, Michael Gaffney, Joseph P. Kerry, Kim Reilly, Feiyue Ren

Experts in our system

1
Dilip K. Rai
Teagasc
Total Publications: 53
 
2
Mohammad B Hossain
Teagasc
Total Publications: 25
 
3
Michael Gaffney
Teagasc
Total Publications: 14
 
4
J P Kerry
University College Cork
Total Publications: 130
 
5
Kim Reilly
Teagasc
Total Publications: 17
 
6
Feiyue Ren
Teagasc
Total Publications: 4