Premium
Effect of nitrogen fertilisation and irrigation on phenolic content, phenolic acid composition, and antioxidant activity of winter wheat grain
Author(s) -
Ma Dongyun,
Sun Dexiang,
Li Yaoguang,
Wang Chenyang,
Xie Yingxin,
Guo Tiancai
Publication year - 2014
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.6790
Subject(s) - irrigation , ferulic acid , chemistry , chlorogenic acid , phenolic acid , composition (language) , agronomy , antioxidant , nitrogen , horticulture , food science , biology , biochemistry , linguistics , philosophy , organic chemistry
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 (I 0 , no irrigation; I 1 , jointing time irrigation; I 2 , 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). I 1 N 300 treatment had the highest TPC at Zhengzhou and Wenxian (1451.5 µg g −1 and 1397.9 µg g −1 , respectively) location, while I 1 N 240 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, I 1 N 240 and I 1 N 300 treatment resulted in the higher TPC, TFC, AOA, as well as phenolic acid, i.e. FA and VA. © 2014 Society of Chemical Industry