5 results on '"Mediouni Ben Jemaa J"'
Search Results
2. Field evaluatin of Mediterranean fruit fly mass trapping with Tripack as alternative to malathion bait-spraying in citrus orchards
- Author
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Bachrouch, O., Allimi, E., Dhouibi, M. H., Mediouni Ben Jemaa, J., Bachrouch, O., Allimi, E., Dhouibi, M. H., and Mediouni Ben Jemaa, J.
- Abstract
The mass trapping technique based on the use of the female-targeted attractant lure Tri-pack® as an alternative to malathion bait-spraying (control treatment) was tested in two citrus orchards in the North of Tunisia against the Mediterranean fruit fly Ceratitis capitata during 2006 and 2007. Results of mass trapping trials in 2006 and 2007 indicated that adult males Medfly captures showed reductions respect to control of 37.62% and 40.2% respectively in mandarin orange variety (Citrus reticulata) orchard compared to 36.48% and 47.29% in Washington navel orange variety (Citrus sinensis) field. Fruit damage assessment showed significant differences between the mass trapping with Tripack® and malathion bait-spraying techniques in the reduction of the percentage of fruit punctures. The percentage of punctured fruit at harvest was significantly different between the treated and the control field in 2006 and in 2007 in the mandarin orange orchard. Nevertheless, in the Washington navel orange orchard, the percentage of punctured fruit at harvest was significantly different between the treated and the control field only in 2006. Thus, results obtained from this study showed that the mass trapping technique based on the use of the female-targeted lure Tri-pack® could be involved as an appropriate strategy for the control of the Medfly and is as effective as malathion bait spraying treatment without leaving pesticide residues on fruit., Se probó en dos huertos de cítricos, en el norte de Túnez en 2006 y 2007, la técnica del trampeo masivo utilizando el atrayente de hembras Tri-Pack® contra la mosca mediterránea de la fruta, Ceratitis capitata, como alternativa a los tratamientos cebo con malatión, que constituye la forma convencional de control utilizada por los agricultores y que se utilizó como tratamiento control. En 2006 y 2007, en los ensayos de trampeo masivo, las capturas de machos adultos del insecto se redujeron respecto el control, respectivamente, un 37,62% y un 40,2% en la variedad de mandarina (Citrus reticulata) en comparación con un 36,48% y un 47,29% en la variedad de naranja Washington navel (Citrus sinensis). Al evaluar los daños en los frutos se observaron diferencias significativas entre el trampeo masivo con Tripack ® y los tratamientos cebo con malatión con una reducción de las picaduras en los frutos El porcentaje de frutos con picaduras en el momento de la cosecha fue significativamente diferente en las parcelas control y tratada en el huerto de mandarina tanto en 2006 como en 2007. Sin embargo, en el huerto de naranja Washington navel, el porcentaje de frutos con picaduras recolectados fue significativamente diferente entre el tratado y el control sólo en 2006. Por tanto, los resultados obtenidos en este estudio muestran que la técnica de trampeo masivo utilizando el atrayente de hembras Tri-Pack® podría ser una estrategia adecuada para el control de la mosca mediterránea de la fruta y es tan efectiva como el tratamiento cebo con malatión, pero sin dejar residuos de plaguicidas en la fruta.
- Published
- 2010
3. Anti‐Inflammatory Potential of Compounds Isolated from Tunisian Lichens Species
- Author
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Mohamed Mendili, Ayda Khadhri, Jouda Mediouni‐Ben Jemâa, Anna Andolfi, Immacolata Tufano, Samira Aschi‐Smiti, Marina DellaGreca, Mendili, M., Khadhri, A., Mediouni-Ben Jemaa, J., Andolfi, A., Tufano, I., Aschi-Smiti, S., and Della Greca, M.
- Subjects
methyl orsellinate ,(+)-iso-usnic acid ,Lichens ,Cell Survival ,Anti-Inflammatory Agents ,Lichen ,Antineoplastic Agents ,Bioengineering ,General Chemistry ,General Medicine ,Nitric Oxide ,Biochemistry ,atranorin ,parietin ,Molecular Medicine ,anti-inflammatory activity ,Molecular Biology - Abstract
The lichen's special symbiotic structure enables it to produce bioactive substances. They have historically been recognized for their aesthetic and medicinal benefits. Furthermore, in recent years, they have performed in various fields, including perfumery, dyeing, and pharmacology due to their rich secondary metabolites. From our study, four compounds were isolated from organic extracts of Parmotrema hypoleucinum, Roccella phycopsis, and Xanthoria parietina and identified by spectroscopic investigation as atranorin, (+)-iso-usnic acid, methyl orsellinate, and parietin, respectively. The anti-inflammatory effects of lichens extracts, and pure compounds were evaluated on RAW 264.7 macrophages cells at different concentrations. At 25 μg/mL all treated samples did not show any effect on cell viability. Atranorin and (+)-iso-usnic acid showed an inhibitory effect on nitric oxide (NO) levels in lipopolysaccharide (LPS)-stimulated macrophages. Nitric oxide (NO) production was measured using Griess reagent, atranorin and (+)-iso-usnic acid showed a high anti-inflammatory potential (75.99 % and 57.27 % at 25 μg/mL). On the other hand, methyl orsellinate and the organic extracts of three lichens showed good anti-inflammatory activity ranging from 29.16 % at 25 μg/mL to 86.91 % at 100 μg/mL.
- Published
- 2022
- Full Text
- View/download PDF
4. Phenolic constitutents, antioxidant and repellent activities of coriander ( Coriandrum sativum L.) fruits using different solvent extracts.
- Author
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Sriti J, Aidi Wannes W, Bachrouch O, Aouini J, Boushih E, Limam F, and Mediouni Ben Jemaa J
- Subjects
- Animals, Solvents, Antioxidants pharmacology, Antioxidants analysis, Fruit chemistry, Methanol, Hexanes, Acetone, Chloroform analysis, Water, Plant Extracts pharmacology, Coriandrum, Insecticides, Weevils
- Abstract
The organic solvent extracts (hexane, chloroform, acetone, methanol and water) of coriander fruits were reported for their antioxidant and repellent activities. The methanol and acetone extracts revealed the highest antiradical activity as compared to the other solvent extracts. HPLC analysis revealed that phenolic acids were the major compounds in chloroform and acetone extracts, whereas flavonoids in methanol and water extracts. The methanol extract of coriander fruits exhibited the highest repellent effect against coleopteran insects. Additionally, the hexane extract of coriander fruits also exhibited potent repellent and toxic activities against rice weevil. It appeared that coriander fruit extract obtained with the apolar solvent had more repellent potential against Sitophilus oryzae as compared to Tribolium castaneum . For Lasioderma serricorne , the methanol extract of coriander fruits reduced in a very significant way the adults followed by the chloroform and hexane extracts.
- Published
- 2024
- Full Text
- View/download PDF
5. Insecticidal effects of two Tunisian diatomaceous earth loaded with Thymus capitatus (L.) Hoffmans and Links as an ecofriendly approach for stored coleopteran pest control.
- Author
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Bachrouch O, Nefzi H, Belloumi S, Horchani-Naifer K, Sriti Eljazi J, Haoual Hamdi S, Msaada K, Labidi J, Abderrabba M, and Mediouni Ben Jemaa J
- Subjects
- Animals, Diatomaceous Earth pharmacology, Pest Control, Coleoptera, Insecticides pharmacology, Oils, Volatile pharmacology
- Abstract
This study investigated composition and toxicity of Thyme EOs against two main stored grain insect pests. Carvacrol was distinguished as a major compound (78.34%). In laboratory tests, EOs applied by both direct contact and fumigant tests was more toxic to L. serricorne than T. castaneum . The EOs were also tested combined with two Tunisian Diatomaceous earths (DEs) against T. castaneum . The LC
50 was 6.28 µL/L air for natural preparation EO/R1, 5.90 µL/L air for EO/R2 and 121.17 for crude EOs by fumigant test, respectively. While, contact test revealed that natural DEs; dust act as an insecticide with 'LC50 ' values of 3.22 and 0.29 µL/cm2 f or R1 and R2, respectively. Moreover, a significant difference was noted between crude EO, EO/R1 and EO/R2. Overall, the enhancement of the Tunisian DEs' insecticidal activity by its mix with EOs may be a promising active substance as a stored grain protectant.- Published
- 2023
- Full Text
- View/download PDF
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