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Article

Assessment of the Toxicity of Natural Oils from Mentha piperita, Pinus roxburghii, and Rosa spp. Against Three Stored Product Insects

1
Department of Stored Product Pests, Plant Protection Institute, Agriculture Research Center (ARC), Sabahia, Alexandria 21616, Egypt
2
Department of Floriculture, Ornamental Horticulture and Garden Design, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria 21545, Egypt
3
Biology Department, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, BO. Box 24428, Saudi Arabia
4
Insecticide Bioassay Department, Central Agricultural Pesticides Lab. (CAPL), Agriculture Research Center (ARC), Alexandria 21616, Egypt
5
Department of Zoology, Faculty of Science, Beni-suef University, Beni-suef 65211, Egypt
*
Author to whom correspondence should be addressed.
Processes 2019, 7(11), 861; https://doi.org/10.3390/pr7110861
Received: 30 October 2019 / Revised: 12 November 2019 / Accepted: 14 November 2019 / Published: 18 November 2019
(This article belongs to the Special Issue Green Separation and Extraction Processes)
Three natural oils extracted from Mentha piperita, Pinus roxburghii, and Rosa spp. were assessed in order to determine their insecticidal activity against the adults of three stored product insects: the rice weevil (Sitophilus oryzae L.), the lesser grain borer (Rhyzopertha dominica, Fabricius), and the red flour beetle (Tribolium castaneum, Herbst.). By Gas chromatography–mass spectrometry (GC/MS) analysis, the main compounds in the n-hexane oil from Rosa spp. were determined to be methyl eugenol (52.17%), phenylethyl alcohol (29.92%), diphenyl ether (7.75%), and geraniol (5.72%); in the essential oil from M. piperita, they were menthone (20.18%), 1,8-cineole (15.48%), menthyl acetate (13.13%), caryophyllene (4.82%), β-pinene (4.37%), and D-limonene (2.81%); and from the foliage of P. roxburghii, they were longifolene (19.52%), caryophyllene (9.45%), Δ-3-carene (7.01%), α-terpineol (6.75%), and γ-elemene (3.88%). S. oryzae and R. dominica were reared using sterilized wheat grains, and T. castaneum was reared on wheat flour mixed with yeast (10:1, w/w), all under laboratory conditions (27 ± 1 °C and 65% ± 5% Relative humidity (R.H). Two toxicity bioassays were used, as well as contact using thin film residues and fumigation bioassays. The results indicated that M. piperita caused a high toxicity for S. oryzae compared to other insects. High significant variations were observed between the tested M. piperita doses against the stored insects, and this natural material could be used to control insects that infect the grains. Also, the data indicated that the Rosa spp. oil had a low-toxicity effect against these insects compared to other oils. We recommend using natural oils against the stored weevils and petals, rather than the chemical agent, so as to serve human health. View Full-Text
Keywords: natural plant oils; contact film; fumigation; bioassay; GC-MS analysis; Mentha piperita; Rosa spp.; Pinus roxburghii; stored product insects natural plant oils; contact film; fumigation; bioassay; GC-MS analysis; Mentha piperita; Rosa spp.; Pinus roxburghii; stored product insects
MDPI and ACS Style

Mackled, M.I.; EL-Hefny, M.; Bin-Jumah, M.; Wahba, T.F.; Allam, A.A. Assessment of the Toxicity of Natural Oils from Mentha piperita, Pinus roxburghii, and Rosa spp. Against Three Stored Product Insects. Processes 2019, 7, 861. https://doi.org/10.3390/pr7110861

AMA Style

Mackled MI, EL-Hefny M, Bin-Jumah M, Wahba TF, Allam AA. Assessment of the Toxicity of Natural Oils from Mentha piperita, Pinus roxburghii, and Rosa spp. Against Three Stored Product Insects. Processes. 2019; 7(11):861. https://doi.org/10.3390/pr7110861

Chicago/Turabian Style

Mackled, Marwa I., Mervat EL-Hefny, May Bin-Jumah, Trandil F. Wahba, and Ahmed A. Allam. 2019. "Assessment of the Toxicity of Natural Oils from Mentha piperita, Pinus roxburghii, and Rosa spp. Against Three Stored Product Insects" Processes 7, no. 11: 861. https://doi.org/10.3390/pr7110861

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