Journal
ARABIAN JOURNAL OF CHEMISTRY
Volume 15, Issue 1, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.arabjc.2021.103482
Keywords
Tribolium; Aspergillus; Stored grain; Essential oil; Pest control
Categories
Funding
- King Saud University, Riyadh, Saudi Arabia [RSP-2021/173]
- Higher Education Commission (HEC), Pakistan [21-18/SRGP/RD/HEC/2014]
- International Foundation for Science (IFS), Sweden [I-1-F-6041-1]
Ask authors/readers for more resources
This study aimed to identify plant-based natural pesticides to control Tribolium castaneum and Aspergillus flavus in stored grains. Essential oils from Chenopodium ambrosioides and Erigeron canadensis showed excellent toxicity against T. castaneum and exhibited good anti-fungal activity against A. flavus. These findings suggest that these essential oils can play an important role in protecting stored grains from contamination by T. castaneum and A. flavus.
The red flour beetle, Tribolium castaneum, and the mold Aspergillus flavus are well known threats of stored grain commodities, causing nutritional loss and poisoning of stored products, respectively. T. castaneum has developed resistance against most insecticides, leading to the use of extensive amounts of synthetic insecticides to protect stored grains. Synthetic pesticides not only toxify the environment but also cause serious health issues in humans using pesticide treated grains. This study aimed to identify plant-based natural pesticides to control T. castaneum and A. flavus. Essential oils were extracted from fresh aerial parts of Chenopodium ambrosioides, Conyza sumatrensis, Erigeron canadensis, and Tagetes minuta through steam distillation and investigated for insecticidal and anti-fungal activities against adult T. castaneum and A. flavus, respectively. GC-MS analysis of C. sumatrensis revealed the presence of 37.7% cis-lachnophyllum ester, 13.4% germa-crene D, and 21.6% limonene, whereas in E. canadensis the major compounds were limonene, ger-macrene D, and cis-lachnophyllum ester (43.4%, 12.9% and 5.9%, respectively). In bioassays with treated grain, C. sumatrensis and E. canadensis essential oils exhibited excellent toxicity against adult T. castaneum with LD50 of 3.7 and 5.6 mg per 10 g grains whereas in a fumigation bioassay they showed LD50 of 6.6 and 10.6 mg/L, respectively. The essential oils extracted from C. ambro-sioides and E. canadensis exhibited good anti-fungal activity against A. flavus. Our findings suggest that essential oils of C. sumatrensis and E. canadensis can play an important role in protecting stored grains from T. castaneum and A. flavus contamination. (c) 2021 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available