A controlled cross-sectional study of family growers of fruit and vegetables was conducted between October 2009 and October 2010 to characterize the use of pesticides, establish the socio-demographic profile, and analyze cholinesterase activity in small-scale agricultural workers in Southern Brazil. Data was collected for 173 workers and 179 controls. A structured questionnaire was applied collecting socio-demographic information and determining knowledge and work practices in relation to pesticide use. The benchmarks for total cholinesterase (ChEs) and butyrylcholinesterase (BuChE) were obtained from the average enzymatic activity of the occupationally unexposed group (control). The mean age of the exposed population was 40.0 ± 11.2 years. The symptoms differed significantly (p<0.05) between the exposed and unexposed populations. Forty (23.1%) workers showed symptoms associated with exposure to pesticides. The average value of enzymatic activity in the occupationally unexposed group for ChEs was 6.3 μmol/mL/min among males and 5.6 μmol/mL/min among females while for BuChE was 2.4 μmol/mL/min among males and 2.0 μmol/mL/min among females. Eight (4.6%) workers had high inhibition (>30%) of ChEs activity, whereas no workers showed high inhibition (>50%) of BuChE. Potential factors involved include gender, education, pesticide orientation, exposure, and hygiene measures.Uniterms: Pesticides/use. Pesticides/occupational exposure. Cholinesterase/evaluation/exposure to pesticides. Agricultural workers/exposure to pesticides. Environmental health. Brazil/southern/ environmental health.Realizou-se um estudo transversal controlado, com hortifruticultores, durante o período de outubro de 2009 a outubro de 2010, a fim de caracterizar o uso de praguicidas, estabelecer o perfil sócio demográfico e analisar a atividade das colinesterases em trabalhadores rurais do sul do Brasil. Os dados foram obtidos de 173 trabalhadores e 179 controles. Um formulário estruturado foi aplicado obtendo informações sócio demográficas, conhecimento e práticas de trabalho relacionadas com o uso de praguicidas. Os valores de referência para colinesterases totais (ChEs) e butirilcolinesterase (BuChE) foram obtidos a partir da média da atividade enzimática do grupo controle. A idade média da população exposta foi de 40,0±11,2 anos. Os sinais/sintomas foram significativamente diferentes (p<0,05) entre a população exposta e não exposta. Quarenta trabalhadores (23,1%) apresentaram sinais/sintomas relacionados com a exposição aos praguicidas. O valor médio do grupo controle foi de 6,3 μmol/mL/min para o gênero masculino e 5,6 μmol/mL/min para o gênero feminino na ChEs; 2,4 μmol/mL/min para o gênero masculino e 2,0 μmol/mL/min para o gênero feminino na BuChE. Do total de trabalhadores (n=173), 08 (4,6%) apresentaram inibição elevada (>30%) das atividades das ChEs, e para BuChE nenhum trabalhador apresentou alta inibição (>50%). Dentre os fatores que poderiam estar envolvidos destacam-se o gênero, escolaridade, orientação para trabalhar com praguicidas, e...

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It can be concluded that in the vineyard region assessed, farmers were more susceptible to heavy metal exposure due to pesticide use.

This study was conducted to identify and assess the critical control points (CCPs) in groundnut-based food production in southern Brazil in order to reduce or eliminate aflatoxin contamination. This methodology has been suggested by the Food and Agriculture Organization (FAO) of the United Nations. Reception of prime matter, groundnut storage, roasting and thermal treatment were the main CCPs identified. Critical factors were the determination of aflatoxin, moisture content and water activity (A w ) during groundnut reception and storage, control of temperature, roasting time and thermal treatment in the groundnut-based food manufacturing. The critical limit for moisture was 8.2% and 0.6 was established for A w . In Brazil, the limit for aflatoxins B 1 , B 2 , G 1 and G 2 has been established at 20 ppb. Temperatures of 180°C ⁄ 1 h and 80°C ⁄ 40 min were established for roasting and thermal treatment stages of groundnut-based food, respectively.

S183Capacitação das equipes locais como estratégia para a institucionalização da avaliação em saúde