Journal
JOURNAL OF CONSUMER PROTECTION AND FOOD SAFETY
Volume 16, Issue 4, Pages 343-351Publisher
SPRINGER INT PUBL AG
DOI: 10.1007/s00003-021-01339-9
Keywords
Rice weevil; Wheat storage; Pest control; Toxicity; Monoterpenes; Stored products
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This study found that synthetic monoterpenes and Yucca shedjera extract have high potential in controlling the rice weevil, possibly by disrupting enzyme activity, without affecting the quality of stored wheat grains.
This study was carried out to find eco-friendly control measures to protect wheat from the rice weevil (Sitophilus oryzae) for safe food. Efficiency of some synthetic monoterpenes (carvone, 1,8-cineole, cuminaldehyde, and linalool) as well as Yucca shedjera extract was evaluated under laboratory conditions against S. oryzae and compared to malathion regarding mortality and progeny development inhibition of S. oryzae adults. In addition, the mechanism of the toxic action of the tested control agents against S. oryzae was studied. The impact of the selected control agents on wheat grain quality was also evaluated. The examined control agents showed a high potential for controlling S. oryzae concerning the adult's mortality and offspring production. The insecticidal activity of the examined control agents against S. oryzae may be due to the disruption of acetylcholinesterase, alpha-amylase, and alkaline phosphatase activity. The quality of the stored wheat grains, which were treated with the tested control agents, did not change and was sometimes better compared to the untreated stored healthy grains. This study suggests that these control agents could be used to protect wheat grains in place of chemical insecticides.
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