Can ozone be a new control strategy for pests of stored grain?

Jian, F., Jayas, D.S., and White, N.D.G. (2013). "Can ozone be a new control strategy for pests of stored grain?", Agricultural Research, 2(1), pp. 1-8. doi : 10.1007/s40003-012-0046-2  Access to full text


Ozone (O3) is a strong oxidant with a long history of safe use in many fields. Researches have been recently focused on the application of O3 as a fumigant to control stored-grain insects and microorganisms and to reduce mycotoxins. This review found the following facts: (1) O3 significantly suppressed insect populations at ≤50 ppm with 4 days treatment; (2) to eradicate insect infestation, >135 ppm with more than 8 days treatment would be required; (3) O3 at 50 ppm with 3 days treatment reduced 63 % of stored fungi; (4) O3 at 5–30 ppm could reduce mycotoxin contamination; however, high concentration and long treatment time were required to eliminate mycotoxins; (5) application of O3 at doses that were sufficient for the effective disinfestation of grain might affect qualities of grain; and (6) O3 at 47–106 ppm could noticeably damage equipment in 2 months by corrosion. Based on these facts, we recommended that ≤50 ppm O3 should be used in the stored-grain industry and its potential method of application was also analyzed.

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