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- Title
Effect of nitrogen fertilisation and irrigation on phenolic content, phenolic acid composition, and antioxidant activity of winter wheat grain.
- Authors
Ma, Dongyun; Sun, Dexiang; Li, Yaoguang; Wang, Chenyang; Xie, Yingxin; Guo, Tiancai
- Abstract
BACKGROUND Understanding the variance of antioxidant in wheat grain responses to irrigation and nitrogen (N) fertiliser management will improve the nutrient quality of wheat grain. Four N rates (0, 180, 240, and 300 kg ha−1) combined with irrigation times (I0, no irrigation; I1, jointing time irrigation; I2, jointing + flowering time irrigation), were used to determine the effect of N fertilisation and irrigation on total phenolic content (TPC), phenolic acid composition, and antioxidant activity (AOA) of wheat grain. RESULTS Irrigation, N fertilisation and their interactions had significant effect on TPC, total flavonoid content (TFC), AOA, p-coumaric acid (PCA), as well as vanillic acid (VA) and chlorogenic acid (CA). I1N300 treatment had the highest TPC at Zhengzhou and Wenxian (1451.5 µg g−1 and 1397.9 µg g−1, respectively) location, while I1N240 resulted in the highest TFC (0.75 mg g−1) and VA (19.77 µg g−1) at Wenxian. TPC, TFC, AOA, ferulic acid (FA), PCA and VA increased with N application rate (from 180 to 300 kg N ha−1). CONCLUSION An appropriate irrigation and N management improved antioxidant content and AOA in wheat grain. Generally, I1N240 and I1N300 treatment resulted in the higher TPC, TFC, AOA, as well as phenolic acid, i.e. FA and VA. © 2014 Society of Chemical Industry
- Subjects
WHEAT; NITROGEN fertilizers &; the environment; WHEAT irrigation; PHENOLIC acids; COMPOSITION of wheat; PHENOL content of grain; ANTIOXIDANTS; NITROGEN; MANAGEMENT
- Publication
Journal of the Science of Food & Agriculture, 2015, Vol 95, Issue 5, p1039
- ISSN
0022-5142
- Publication type
Article
- DOI
10.1002/jsfa.6790