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Ozone effects on wheat grain quality - A summary

Journal article
Authors Malin Broberg
Zhaozhong Feng
Yue Xin
Håkan Pleijel
Published in Environmental Pollution
Volume 197
Pages 203-213
ISSN 0269-7491
Publication year 2015
Published at Department of Biological and Environmental Sciences
Pages 203-213
Language en
Keywords Baking quality, Mineral, Ozone, Protein, Quality, Starch, 1000-Grain weight, Volume weight, Wheat
Subject categories Environmental Sciences related to Agriculture and Land-use, Botany, Other Earth and Related Environmental Sciences


We synthesized the effects of ozone on wheat quality based on 42 experiments performed in Asia, Europe and North America. Data were analysed using meta-analysis and by deriving response functions between observed effects and daytime ozone concentration. There was a strong negative effect on 1000- grain weight and weaker but significant negative effects on starch concentration and volume weight. For protein and several nutritionally important minerals (K, Mg, Ca, P, Zn, Mn, Cu) concentration was significantly increased, but yields were significantly decreased by ozone. For other minerals (Fe, S, Na) effects were not significant or results inconclusive. The concentration and yield of potentially toxic Cd were negatively affected by ozone. Some baking properties (Zeleny value, Hagberg falling number) were positively influenced by ozone. Effects were similar in different exposure systems and for spring and winter wheat. Ozone effects on quality should be considered in future assessments of food security/ safety.

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