Resíduos de praguicidas em amostras de ovo comercializadas na cidade de São Paulo

Abstract

LMR em ovo, assim como o parâmetro de ingestão diária aceitável não foi estabelecido, porém a presença em ovo pode ser atribuída a alimentação dos animais e este praguicida devido a presença de cloro na molécula pode contribuir para o risco crônico à saúde humana. Embora apenas uma amostra tenha tido um resultado positivo, o controle dos alimentos destinados a população são um importante fator a ser controlado para garantir a saúde da população. Palavras-chave: Praguicidas. Resíduos. Ovo. Ingestão diária aceitável. Risco a saúde. ABSTRACT ABSTRACT CISCATO, C. H. P. Pesticide residue in egg samples commercialized in Sao Paulo City. 2008. 105 f. Thesis (Doctorate) -Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, 2008.The use of pesticides in agriculture and livestock can cause serious problem for human beings and animal health. The control of these substances in food and in the environment is an important instrument to minimize these risks. In Brazil information about pesticide residues on food are insufficient, especially for animal products. An important nutrient supply on human diet is the egg, it provides several nutrients especially for children. According to FAO Brazil is the 7 th in world ranking production and produces 1.72million dozen/year and the consumption is around 1.7 kg/year (IBGE, 2003). Despite of the Brazilian scene the consumption per capita almost of egg production is exported to other countries and the main countries are Saudi Arabia, China, Japan and Netherlands. The study was developed from January 2004 to 2006, 150 egg samples were collected from the national market and evaluated for pesticide residues of organochlorine, organophosphorus and pyrethroids pesticides.A multiresidue method were employed to determinate the pesticide in samples. The method uses an organic solvent extraction, a partition with dichloromethane and purification step by gel permeation chromatography (GPC) and silica gel column. For identification and quantification it was used gas chromatography techinique with ECD, NPD and FPD detectors. The recoveries for the method were within 70 to 120%. The results of the analysis showed that the herbicide alachlor were detected in 0.7% of the samples and the chronic dietary intake was evaluated. The pesticide does not have a proper use in egg, no MRL established and no ADI parameter. The presence could be attributed to feed contamination and the contribution to health risk could be detached once it has a chlorine molecule which could contribute to chronic diseases. Although only one sample was positive to pesticide residues this result is important to food quality control and consumer health. It helps to emphasize the risk studies on pesticide residues on animal and vegetable food.

Organochlorine pesticides in green sea turtles (Chelonia mydas) with and without fibropapillomatosis caught at three feeding areas off Brazil

“…The first clean-up was done by dispersive solid-phase extraction (d-SPE) based on QuEChERS (Anastassiades et al ., 2003) by mixing 8 mL of acetonitrile extract with 1.2 g of magnesium sulphate (MgSO 4 ) and 0.4 g of primary and secondary amine (PSA). For the second clean-up, extracts were transferred to mini-columns of 1 g silica gel and 1 g of anhydrous sodium sulphate and eluted with a n-hexane:toluene (v:v, 65:35) solution, followed by a toluene elution (Ciscato, 2008).…”

Acaricidal Activity of Inert Powders Against the Poultry Red Mite Dermanyssus Gallinae (De Geer, 1778) (Mesostigmata: Dermanyssidae)

“…Chemical acaricides are used with relative efficacy in mite control. However, indiscriminate use has made populations of mites resistant to pyrethroid and organophosphorous pesticides, as well as to other compounds (Nordenfors et al, 2001;Abbas et al, 2014), and promoted the presence of residues of these products in eggs (Romão, 2007;Ciscato, 2008;Liebisch et al, 2011;Sparagano et al, 2014;Pritchard et al, 2015). In addition, the production of poultry outside cages has been encouraged, either by the market or by law (Murillo and Mullens, 2016), which, together with restrictions on the use of chemicals in organic production systems, and increased demand for eggs, has reinforced the need for safe and more effective control of poultry mites.…”

Ácido Cítrico: Um Enfoque Molecular

“…Sem as devidas precauções e cuidados em relação a manipulação, produção, estocagem e destino final dos pesticidas, não só o meio ambiente corre risco, mas também a saúde das pessoas que de alguma forma entram em contato com tais produtos EMBRAPA, 2018). A utilização destes agentes químicos gerou a contaminação de grãos, frutas, legumes, hortaliças e verduras, trazendo inúmeros malefícios ao meio ambiente, produtores rurais e aos consumidores (CISCATO, 2008). Os efeitos sobre a exposição ocupacional de trabalhadores rurais podem variar desde sintomas menos severos como dificuldades para dormir, dor de cabeça, tontura, náusea, vômito e suor excessivo, até a diminuição das defesas imunológicas, o desenvolvimento de fraqueza muscular e broncoespasmos que podem progredir para convulsões e coma, além de aborto, impotência sexual, alterações do humor e distúrbios do comportamento, como surtos psicóticos e até mesmo câncer (LUNDBERG et al, 1997;INCA, 2018).…”