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Analysis of volatiles from stored wheat and Rhyzopertha dominica (F.) with solid phase microextraction-gas chromatography mass spectrometry
Journal article   Peer reviewed

Analysis of volatiles from stored wheat and Rhyzopertha dominica (F.) with solid phase microextraction-gas chromatography mass spectrometry

Y. Niu, L. Hua, G. Hardy, M. Agarwal and Y. Ren
Journal of the Science of Food and Agriculture, Vol.96(5), pp.1697-1703
2016
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Abstract

BACKGROUND: Volatile organic compounds (VOCs) contribute significantly to food flavour and can be used as indicators of quality, age of storage, and hygiene condition of stored products. The VOCs in the headspace of three different samples - healthy wheat, Rhyzopertha dominica, and wheat with R. dominica - were analysed at 25°C by solid phase micro-extraction (SPME) coupled with gas chromatography-flame ionisation detection (GC-FID) and gas chromatography-mass spectrometry (GC-MS). All the experimental conditions were kept consistent except a polar column and a non-polar column were used to assess the differences in volatile fingerprints. RESULTS: A total of 114 volatiles were identified by both the polar and non-polar columns, of which 48 were specific to one of the three samples tested. The volatiles were mainly carbonyl chemical compounds such as aldehydes, ketones and alcohols. GC-MS results showed slightly more VOCs were identified from the polar column. The total number for the three samples was 43 from the polar column compared to 39 from the non-polar column. Conversely, 30 VOCs unique to a given sample were identified from the non-polar column compared to 18 from the polar column. CONCLUSION: The use of both polar and non-polar columns is essential to capture the full range of VOCs produced by the three specific sample types investigated. The data can form the basis of enquiry into the relationship between storage and grain quality, and insect infestation and grain quality by observing the impact that these circumstances have on the production of volatile organic compounds

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Collaboration types
Domestic collaboration
International collaboration
Citation topics
3 Agriculture, Environment & Ecology
3.32 Entomology
3.32.1138 Botanical Insecticides
Web Of Science research areas
Agriculture, Multidisciplinary
Chemistry, Applied
Food Science & Technology
ESI research areas
Agricultural Sciences
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