Study of degradation of endosulfan residues in coffee rusk (Coffea arabica L.)
The persistence was studied of the residue of cyclodiene pesticide endosulfan in coffee husks for different periods of application, whilst seeking to control the coffee-berry borer Hypothenemus hampei. The influence of coffee husks composting on thefinal amount of residues being inoculated by the soil microorganisms was also studied. The employed method in the analyses was adapted from Mitchell (1976) by Lemes et al. (1993), by the extraction with acetonitrile and purification by partition in a dichloromethane-hexane mixture followed by a florisil column chromatography clean-up concentration and GC determination with ECD. The limit of detection was 0.03 mg/kg (ppm) to alpha and beta endosulfan and 0.04 mg/kg (ppm) to endosulfan sulfate metabolite. The recoveries of fortified samples ranged from 80.55 to 112.03 percent. In composting the coffee husks, there was a predominance of the fungi Aspergillus, Penicillium, Fusarium and Rhizopus. The microbial population increased in simultaneous degradation of residues of endosulfan isomers alpha and beta, and endosulfan sulfate as well, in a second order exponential decay function.
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2001
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| Subjects: | COFFEA, COFFEA ARABICA, FUSARIUM, HYPOTHENEMUS HAMPEI, PENICILLIUM, RHIZOPUS, ASPERGILLUS, BIODEGRADACION, CAFE, ELABORACION DEL COMPOST, ENDOSULFAN, CASCARAS, METABOLITOS, MICROORGANISMOS, RESIDUOS, SULFATOS, |
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KOHA-OAI-BVE:892942020-02-03T21:57:14ZStudy of degradation of endosulfan residues in coffee rusk (Coffea arabica L.)Estudo da degradacao de residuos de endosulfan em palha de cafe (Coffea arabica L.) 99442 Nishiguchi, I. 102411 Paccola, A.A. 2001The persistence was studied of the residue of cyclodiene pesticide endosulfan in coffee husks for different periods of application, whilst seeking to control the coffee-berry borer Hypothenemus hampei. The influence of coffee husks composting on thefinal amount of residues being inoculated by the soil microorganisms was also studied. The employed method in the analyses was adapted from Mitchell (1976) by Lemes et al. (1993), by the extraction with acetonitrile and purification by partition in a dichloromethane-hexane mixture followed by a florisil column chromatography clean-up concentration and GC determination with ECD. The limit of detection was 0.03 mg/kg (ppm) to alpha and beta endosulfan and 0.04 mg/kg (ppm) to endosulfan sulfate metabolite. The recoveries of fortified samples ranged from 80.55 to 112.03 percent. In composting the coffee husks, there was a predominance of the fungi Aspergillus, Penicillium, Fusarium and Rhizopus. The microbial population increased in simultaneous degradation of residues of endosulfan isomers alpha and beta, and endosulfan sulfate as well, in a second order exponential decay function.The persistence was studied of the residue of cyclodiene pesticide endosulfan in coffee husks for different periods of application, whilst seeking to control the coffee-berry borer Hypothenemus hampei. The influence of coffee husks composting on thefinal amount of residues being inoculated by the soil microorganisms was also studied. The employed method in the analyses was adapted from Mitchell (1976) by Lemes et al. (1993), by the extraction with acetonitrile and purification by partition in a dichloromethane-hexane mixture followed by a florisil column chromatography clean-up concentration and GC determination with ECD. The limit of detection was 0.03 mg/kg (ppm) to alpha and beta endosulfan and 0.04 mg/kg (ppm) to endosulfan sulfate metabolite. The recoveries of fortified samples ranged from 80.55 to 112.03 percent. In composting the coffee husks, there was a predominance of the fungi Aspergillus, Penicillium, Fusarium and Rhizopus. The microbial population increased in simultaneous degradation of residues of endosulfan isomers alpha and beta, and endosulfan sulfate as well, in a second order exponential decay function.COFFEACOFFEA ARABICAFUSARIUMHYPOTHENEMUS HAMPEIPENICILLIUMRHIZOPUSASPERGILLUSBIODEGRADACIONCAFEELABORACION DEL COMPOSTENDOSULFANCASCARASMETABOLITOSMICROORGANISMOSRESIDUOSSULFATOSEnergia na Agricultura (Brasil) |
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COFFEA COFFEA ARABICA FUSARIUM HYPOTHENEMUS HAMPEI PENICILLIUM RHIZOPUS ASPERGILLUS BIODEGRADACION CAFE ELABORACION DEL COMPOST ENDOSULFAN CASCARAS METABOLITOS MICROORGANISMOS RESIDUOS SULFATOS COFFEA COFFEA ARABICA FUSARIUM HYPOTHENEMUS HAMPEI PENICILLIUM RHIZOPUS ASPERGILLUS BIODEGRADACION CAFE ELABORACION DEL COMPOST ENDOSULFAN CASCARAS METABOLITOS MICROORGANISMOS RESIDUOS SULFATOS |
| spellingShingle |
COFFEA COFFEA ARABICA FUSARIUM HYPOTHENEMUS HAMPEI PENICILLIUM RHIZOPUS ASPERGILLUS BIODEGRADACION CAFE ELABORACION DEL COMPOST ENDOSULFAN CASCARAS METABOLITOS MICROORGANISMOS RESIDUOS SULFATOS COFFEA COFFEA ARABICA FUSARIUM HYPOTHENEMUS HAMPEI PENICILLIUM RHIZOPUS ASPERGILLUS BIODEGRADACION CAFE ELABORACION DEL COMPOST ENDOSULFAN CASCARAS METABOLITOS MICROORGANISMOS RESIDUOS SULFATOS 99442 Nishiguchi, I. 102411 Paccola, A.A. Study of degradation of endosulfan residues in coffee rusk (Coffea arabica L.) |
| description |
The persistence was studied of the residue of cyclodiene pesticide endosulfan in coffee husks for different periods of application, whilst seeking to control the coffee-berry borer Hypothenemus hampei. The influence of coffee husks composting on thefinal amount of residues being inoculated by the soil microorganisms was also studied. The employed method in the analyses was adapted from Mitchell (1976) by Lemes et al. (1993), by the extraction with acetonitrile and purification by partition in a dichloromethane-hexane mixture followed by a florisil column chromatography clean-up concentration and GC determination with ECD. The limit of detection was 0.03 mg/kg (ppm) to alpha and beta endosulfan and 0.04 mg/kg (ppm) to endosulfan sulfate metabolite. The recoveries of fortified samples ranged from 80.55 to 112.03 percent. In composting the coffee husks, there was a predominance of the fungi Aspergillus, Penicillium, Fusarium and Rhizopus. The microbial population increased in simultaneous degradation of residues of endosulfan isomers alpha and beta, and endosulfan sulfate as well, in a second order exponential decay function. |
| format |
|
| topic_facet |
COFFEA COFFEA ARABICA FUSARIUM HYPOTHENEMUS HAMPEI PENICILLIUM RHIZOPUS ASPERGILLUS BIODEGRADACION CAFE ELABORACION DEL COMPOST ENDOSULFAN CASCARAS METABOLITOS MICROORGANISMOS RESIDUOS SULFATOS |
| author |
99442 Nishiguchi, I. 102411 Paccola, A.A. |
| author_facet |
99442 Nishiguchi, I. 102411 Paccola, A.A. |
| author_sort |
99442 Nishiguchi, I. |
| title |
Study of degradation of endosulfan residues in coffee rusk (Coffea arabica L.) |
| title_short |
Study of degradation of endosulfan residues in coffee rusk (Coffea arabica L.) |
| title_full |
Study of degradation of endosulfan residues in coffee rusk (Coffea arabica L.) |
| title_fullStr |
Study of degradation of endosulfan residues in coffee rusk (Coffea arabica L.) |
| title_full_unstemmed |
Study of degradation of endosulfan residues in coffee rusk (Coffea arabica L.) |
| title_sort |
study of degradation of endosulfan residues in coffee rusk (coffea arabica l.) |
| publishDate |
2001 |
| work_keys_str_mv |
AT 99442nishiguchii studyofdegradationofendosulfanresiduesincoffeeruskcoffeaarabical AT 102411paccolaaa studyofdegradationofendosulfanresiduesincoffeeruskcoffeaarabical AT 99442nishiguchii estudodadegradacaoderesiduosdeendosulfanempalhadecafecoffeaarabical AT 102411paccolaaa estudodadegradacaoderesiduosdeendosulfanempalhadecafecoffeaarabical |
| _version_ |
1756059936059555840 |