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Bioactivity of Ocimum gratissimum L. oil and two of its constituents against five insect pests attacking stored food products
Year:
2008
Authors :
Kostyukovsky, Moshe
;
.
Ravid, Uzi
;
.
Shaaya, Eli
;
.
Volume :
44
Co-Authors:
Ogendo, J.O., Department of Crops, Horticulture and Soils, Egerton University, P.O. Box 536, Egerton 20115, Kenya
Kostyukovsky, M., Department of Food Science, ARO, The Volcani Center, Bet Dagan, 50250, Israel
Ravid, U., Department of Aromatic, Medicinal and Spice Crops, ARO, Newe Ya'ar Research Center, Ramat Yishay, 30095, Israel
Matasyoh, J.C., Department of Chemistry, Egerton University, P.O. Box 536, Egerton 20115, Kenya
Deng, A.L., Department of Biological Sciences, Egerton University, P.O. Box 536, Egerton 20115, Kenya
Omolo, E.O., Department of Crops, Horticulture and Soils, Egerton University, P.O. Box 536, Egerton 20115, Kenya
Kariuki, S.T., Department of Biological Sciences, Egerton University, P.O. Box 536, Egerton 20115, Kenya
Shaaya, E., Department of Food Science, ARO, The Volcani Center, Bet Dagan, 50250, Israel
Facilitators :
From page:
328
To page:
334
(
Total pages:
7
)
Abstract:
The fumigant and repellent effects of Ocimum gratissimum L. oil and its constituents, β-(Z)-ocimene and eugenol, were evaluated against adults of Sitophilus oryzae (L.), Tribolium castaneum (Herbst), Oryzaephilus surinamensis (L.), Rhyzopertha dominica (F.) and Callosobruchus chinensis (L.). The fumigant toxicities of the oil and two of its constituents were assessed at four rates (0, 1, 5 and10 μL/L air) in space fumigation, whereas repellence of the oil and eugenol in acetone was evaluated in choice bioassays at five rates (0, 1.0, 2.0, 3.0 and 4.0 μL oil/2 g grain). Results showed that fumigant toxicity and repellence of the oil and its constituents were significantly (P<0.0001) influenced by concentration and time after treatment. At 1 μL/L air, the oil caused 98%, 99% and 100% mortality of R. dominica, O. surinamensis and C. chinensis, respectively, 24 h after treatment, whereas eugenol achieved 79%, 61% and 100% kill of the same insects. β-(Z)-ocimene produced a weaker toxicity with 8%, 11% and 59% mortality of R. dominica, O. surinamensis and C. chinensis, respectively. Except for T. castaneum which was more tolerant, LC50 values for tested insects ranged from 0.20 to 14, 0.01 to 17 and 0.80 to 23 μL/L air 24 h after treatment for O. gratissimum oil, eugenol and β-(Z)-ocimene, respectively. All test insects had percentage repellence (PR) values which ranged from 37.5% to 100% and 45% to 100% for the oil and eugenol, respectively. However, C. chinensis showed a dose-dependent decrease in PR values in the eugenol bioassay with a corresponding dose-dependent mortality on treated grains. Ocimum gratissimum oil and its constituents are potential alternatives to synthetic fumigants in the treatment of durable agricultural products. Successful adoption of plant oils in the protection of food commodities promises an eco-friendly option compatible with international biosafety regulations. © 2008 Elsevier Ltd.
Note:
Related Files :
Callosobruchus chinensis
Essential oil
Eugenol
Hexapoda
Oryzaephilus surinamensis
Sitophilus oryzae
Stored-product insects
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More details
DOI :
10.1016/j.jspr.2008.02.009
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
27302
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:29
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Scientific Publication
Bioactivity of Ocimum gratissimum L. oil and two of its constituents against five insect pests attacking stored food products
44
Ogendo, J.O., Department of Crops, Horticulture and Soils, Egerton University, P.O. Box 536, Egerton 20115, Kenya
Kostyukovsky, M., Department of Food Science, ARO, The Volcani Center, Bet Dagan, 50250, Israel
Ravid, U., Department of Aromatic, Medicinal and Spice Crops, ARO, Newe Ya'ar Research Center, Ramat Yishay, 30095, Israel
Matasyoh, J.C., Department of Chemistry, Egerton University, P.O. Box 536, Egerton 20115, Kenya
Deng, A.L., Department of Biological Sciences, Egerton University, P.O. Box 536, Egerton 20115, Kenya
Omolo, E.O., Department of Crops, Horticulture and Soils, Egerton University, P.O. Box 536, Egerton 20115, Kenya
Kariuki, S.T., Department of Biological Sciences, Egerton University, P.O. Box 536, Egerton 20115, Kenya
Shaaya, E., Department of Food Science, ARO, The Volcani Center, Bet Dagan, 50250, Israel
Bioactivity of Ocimum gratissimum L. oil and two of its constituents against five insect pests attacking stored food products
The fumigant and repellent effects of Ocimum gratissimum L. oil and its constituents, β-(Z)-ocimene and eugenol, were evaluated against adults of Sitophilus oryzae (L.), Tribolium castaneum (Herbst), Oryzaephilus surinamensis (L.), Rhyzopertha dominica (F.) and Callosobruchus chinensis (L.). The fumigant toxicities of the oil and two of its constituents were assessed at four rates (0, 1, 5 and10 μL/L air) in space fumigation, whereas repellence of the oil and eugenol in acetone was evaluated in choice bioassays at five rates (0, 1.0, 2.0, 3.0 and 4.0 μL oil/2 g grain). Results showed that fumigant toxicity and repellence of the oil and its constituents were significantly (P<0.0001) influenced by concentration and time after treatment. At 1 μL/L air, the oil caused 98%, 99% and 100% mortality of R. dominica, O. surinamensis and C. chinensis, respectively, 24 h after treatment, whereas eugenol achieved 79%, 61% and 100% kill of the same insects. β-(Z)-ocimene produced a weaker toxicity with 8%, 11% and 59% mortality of R. dominica, O. surinamensis and C. chinensis, respectively. Except for T. castaneum which was more tolerant, LC50 values for tested insects ranged from 0.20 to 14, 0.01 to 17 and 0.80 to 23 μL/L air 24 h after treatment for O. gratissimum oil, eugenol and β-(Z)-ocimene, respectively. All test insects had percentage repellence (PR) values which ranged from 37.5% to 100% and 45% to 100% for the oil and eugenol, respectively. However, C. chinensis showed a dose-dependent decrease in PR values in the eugenol bioassay with a corresponding dose-dependent mortality on treated grains. Ocimum gratissimum oil and its constituents are potential alternatives to synthetic fumigants in the treatment of durable agricultural products. Successful adoption of plant oils in the protection of food commodities promises an eco-friendly option compatible with international biosafety regulations. © 2008 Elsevier Ltd.
Scientific Publication
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