Journal Article


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


Agriculture & Food Science

antioxidants human health phenolics bioactive compounds flavonoids antioxidant activity chemical industry organic onion allium cepa l content production organic systems food consumption conventional

Evaluation of polyphenolic content and antioxidant activity in two onion varieties grown under organic and conventional production systems (2016)

Abstract BACKGROUND: Onions contain a number of bioactive compounds, in particular polyphenols. They are rich sources of such compounds in the human diet and offer significant health benefits to the consumer. Demand for organic crops is steadily increasing partly based on the expected health benefits of organic food consumption. The current study examines the influence of organic and conventional crop management practices on bioactive polyphenolic content of onion. RESULTS: We examined the effect of conventional, organic, and mixed cultivation practices on the content of total phenolics, total flavonoids and antioxidant activity in two varieties of onion grown over 4 years in a split-plot factorial systems comparison trial. Levels of total phenolics and total flavonoids showed a significant year-on-year variation and were significantly different between organic and conventional production systems. The levels of total phenolics, total flavonoids and antioxidant activity in general were significantly higher (P < 0.05) under fully organic compared to fully conventional management. CONCLUSION: Organic cultivation practices resulted in significantly higher levels of potential bioactive compounds in onion.
Collections Ireland -> University College Cork -> College of Science, Engineering and Food Science
Ireland -> University College Cork -> Food and Nutritional Sciences - Journal Articles
Ireland -> University College Cork -> Food and Nutritional Sciences

Full list of authors on original publication

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

Experts in our system

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