Journal
JOURNAL OF STORED PRODUCTS RESEARCH
Volume 46, Issue 1, Pages 7-12Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jspr.2009.07.002
Keywords
Maize; Storage; Corn; Dry matter loss; Damage kernel total; Ozone; Carbon dioxide evolution
Categories
Funding
- Iowa Energy Center
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Two experiments were conducted to determine the effect of ozone treatment on controlling deterioration of high-moisture maize under extreme and moderate environmental conditions experienced during harvest. In the first experiment, 0.77-kg maize samples held at 22% moisture content were treated with ozone at 0.08, 0.16, 0.31, 0.62, 0.94, 1.25 and 1.56 mg kg maize(-1) min(-1) (60-1120 ppm ozone in air during application) for periods of 5 or 24 h, with an additional treatment of 1.56 mg min(-1) repeated every 3 d, and stored at 32 degrees C for 9 d under continuous aeration. Ozone treatment decreased dry matter loss compared to the control, but not to a level that would likely justify ozone treatment at the rates and treatment times used. In the second experiment, 2.43-kg maize samples held at 26% moisture content were treated with ozonation rates of 0.25, 0.5, 1, and 2 mg kg maize(-1) min(-1) (1090-8680 ppm ozone during application) for 24 h, stored at 15.5 degrees C for 30 d and passively aerated every 3 d. Additional ozone treatments at the 2 mg kg maize(-1) min(-1) rate were applied for 1 h on 3-, 6-, and 12-d intervals throughout the experiment. Single ozone treatments of 1 and 2 mg kg maize(-1) min(-1) were equally effective, reducing dry matter loss by 1.3 percentage points compared to the control after 30 d of storage. Repeat treatments at 2 mg kg maize(-1) min(-1) did not reduce dry matter loss compared to the single treatment. (C) 2009 Published by Elsevier Ltd.
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