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      Residuos de plaguicidas organoclorados en 4 tipos de aceites vegetales Translated title: Organochlorine pesticide residues in 4 types of vegetable oils.


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          Esta investigación tuvo como objetivos identificar y cuantificar residuos de los plaguicidas organoclorados (POC) hexaclorobenceno (HCB), lindano, cis-clordano, heptacloro, aldrín, dieldrín, endrín y o,p’-diclorodifeniltricloroetano (o,p’-DDT) en aceites de maíz, soya, girasol y mezclas de aceites, que se expenden en la ciudad de Maracaibo, Venezuela. Se analizaron 30 muestras de 4 tipos de aceites de 10 marcas comerciales. La extracción de residuos de POC se realizó según la técnica de la AOAC. Para la identificación y cuantificación se utilizó un cromatógrafo de gases con detector de captura electrónica (GC-ECD), y para la confirmación, un cromatógrafo de gases acoplado a un espectrómetro de masas (GCMS). Todos los residuos de POC investigados fueron detectados en las muestras analizadas. Se detectaron en mayor concentración (mg/ g) aldrín (0,0088), lindano (0,0054) y o,p’-DDT (0,0035). El análisis estadístico demostró diferencias significativas (P<0,05) para la concentración de POC en los diferentes tipos y marcas comerciales de aceites vegetales. La concentración de lindano en el aceite de maíz (0,0125 mg/g), de cis-clordano (0,0091 mg/g) y aldrín (0,0287 mg/g) en el aceite de soya sobrepasaron los límites máximos de residuos (LMRs) establecidos por la Organización de las Naciones Unidas para la Agricultura y la Alimentación/Organización Mundial de la Salud (FAO/WHO). En conclusión, se detectó una elevada incidencia de residuos de POC en los aceites vegetales analizados.

          Translated abstract

          The present study had as objectives to identify and to quantify organochlorine pesticide residues (OCP) hexachlorobenzene (HCB), lindane, cis-chlordane, heptachlor, aldrín, dieldrín, endrín and o,p’-DDT in vegetable oils of corn, soybean, sunflower and mixtures of oils, sold in the city of Maracaibo, Venezuela. 30 samples of 4 types of vegetable oils of 10 commercial brands were analyzed. The extraction of OCP residues was done according to the Official Method of AOAC. A gas chromatograph with an electronic capture detector (GC-ECD) was used for identification and quantification of OCP residues and confirmation was done with a gas chromatograph coupled with a mass spectrometer (GC-MS). All the OCP residues investigated were detected in the analyzed samples. Aldrin (0.0088), lindane (0.0054) and o,p’-DDT (0.0035) were the OCP residues detected in higher concentrations (mg/g). The statistical analysis showed significant differences (P<0.05) for the concentration of OCP in the different types and commercial brands of vegetable oils. Lindane concentration in the corn oil (0.0125 mg/g), as well as cischlordane (0.0091mg/g) and aldrín (0.0287 mg/g) in the soybean oil exceeded maximal residual limits (MRL) established by Food and Agriculture Organization of the United Nations/World Health Organization (FAO/WHO). In conclusion, it was detected a high incidence of OCP residues in vegetable oils analyzed.

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            SAS® User's Guide: Statistics

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              Worldwide trends in DDT levels in human breast milk.

              Concern over human breast milk contamination with the pesticide DDT (1,1,1-trichloro-2,2-bis(chlorodiphenyl)ethane) has prompted numerous studies around the world during the last five decades. This article examines trends in reported DDT levels, and the apparent effect of restrictions on DDT use. More than 130 published values for DDT in human milk since 1951 were compiled, and trend lines were fit for regions of the world. Population means have declined in much of the world, from 5000-10000 microg DDT/kg milk fat to around 1000 today in many areas. Although different regions have different means, the decline seen in various countries corresponds to their restricting DDT use. DDT concentrations in human milk have declined in most areas of the world, consistent with restrictions on its use. Nevertheless, levels can be high in areas still using DDT, even higher than the World Health Organization's recommended limit for infants. These results indicate that population averages can be reduced by a predictable amount as DDT use is restricted.

                Author and article information

                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Archivos Latinoamericanos de Nutrición
                Sociedad Latinoamericana de Nutrición (Caracas )
                December 2007
                : 57
                : 4
                : 397-401
                [1 ] Universidad del Zulia Venezuela



                SciELO Venezuela

                Self URI (journal page): http://www.scielo.org.ve/scielo.php?script=sci_serial&pid=0004-0622&lng=en
                NUTRITION & DIETETICS

                Nutrition & Dietetics
                Organochlorine pesticides,vegetable oils,gas chromatography,Plaguicidas organoclorados,aceites vegetales,de gases


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