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Natural levels of ethyl formate in stored grains determined using an improved method of analysis
Journal article   Peer reviewed

Natural levels of ethyl formate in stored grains determined using an improved method of analysis

L.T. Vu and Y.L. Ren
Journal of Stored Products Research, Vol.40(1), pp.77-85
2004
DOI: https://doi.org/10.1016/S0022-474X(02)00079-6
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Abstract

Ethyl formate was readily determined with a gas chromatograph (GC) equipped with a flame ionisation detector. Natural levels of ethyl formate in Australian wheat, barley, oats, and canola were analysed by GC, after extraction with ammonium nitrate solution. Background levels of ethyl formate were present in newly harvested and stored grain. The levels of ethyl formate (0.1-0.6 mg kg-1) in grains varied with commodity, temperature, moisture and period of storage. The values ranged from 0.1 to 0.2 mg kg -1 for newly harvested wheat, barley and oats, and 0.3-0.4 mg kg -1 for newly harvested canola. Ethyl formate was present in grains at harvest, increased during the first 7 months of storage, and then began to decline, particularly at grain temperatures higher than 25°C and moisture contents higher than 12.5% (for wheat, barley and oats) and 6.5% (for canola). The natural levels of ethyl formate should be considered when establishing maximum residue limits.

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Source: InCites

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Citation topics
3 Agriculture, Environment & Ecology
3.32 Entomology
3.32.1138 Botanical Insecticides
Web Of Science research areas
Entomology
ESI research areas
Plant & Animal Science
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