Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-10-19T18:05:22Z No. of bitstreams: 1 2013 - Thadia Turon Costa da Silva.pdf: 3226072 bytes, checksum: 9173eea03b722347ce1269d2988d0a42 (MD5) / Made available in DSpace on 2018-10-19T18:05:22Z (GMT). No. of bitstreams: 1 2013 - Thadia Turon Costa da Silva.pdf: 3226072 bytes, checksum: 9173eea03b722347ce1269d2988d0a42 (MD5) Previous issue date: 2013-12-11 / FAPERJ / PIBEX (Programa Institucional de Bolsas de Extens?o, da Pr?-Reitoria de Extens?o - PR5 da Universidade Federal do Rio de Janeiro) / The objective of this study was to evaluate the different dimensions of organic vegetables quality proceeding from Family Agriculture and supplied to the School Food Programme in Petropolis. The evaluation was done based on centesimal composition, antioxidant activity, microbiological characteristics and pesticide residue. The organic vegetables evaluated were carrot (DaucuscarotaL.), broccoli (Brassicaoleraceae, var. it?lica), kale (Brassicaoleraceae, var. acephala) and cabbage (Brassicaoleraceae, var. capitata). The analysis performed were moisture determination, mineral fixed residues, lipid content, total proteins, carbohydrate, soluble and insoluble fibers, total soluble solids, total acidity, pH, ascorbic acid and pesticide residue. The antioxidant activity was based on the separation of DPPH radical and total phenolic content. Microbiologic analyses were conducted regarding sanitary indicators for food which were compared to standard values from the Brazilian legislation. As a complement, a dietary risk evaluation was conducted using the Maximum Theoretical Daily Intake (IDTM) and the Estimated Daily Intake. This evaluation was done through the medium intake for 10 year-old children, maximum limits of pesticide residue (LMR) and pesticide residue values detected on conventional agriculture food items. The results obtained were compared with the security limits (IDA) according to the medium weight of the studied population. The effectiveness of the antioxidant capacity of the vegetables was obtained in a decreasing order: broccoli, kale, cabbage and carrot. Regarding the microbiologic parameter, the vegetables presented a satisfactory sanitary quality. No pesticide residues were found above detection limits for both authorized and non-authorized organic vegetables producers. The organic vegetables analyzed follow the standards for quality and security demanded by the Law 1197/2009 which prioritizes food for the school programme. Regarding the dietary risk evaluation, orange, apple, tomato, rice and beans were the food items which showed, for children, the highest chronic intake risk for presenting IDTM higher than IDA for the following pesticides: dicofol, dimethoate, methidathion, pirimiphos-methyl, tetraconazol and carbaryl. Key-words: organic food, vegetables, food security / O presente estudo teve como objetivo avaliar as diferentes dimens?es da qualidade de hortali?as org?nicas provenientes da agricultura familiar fornecidas ? alimenta??o escolar do munic?pio de Petr?polis, a partir da avalia??o da composi??o centesimal, atividade antioxidante, caracter?sticas microbiol?gicas e res?duos de agrot?xicos. Foram avaliadas cenouras (DaucuscarotaL.), br?colis (Brassicaoleraceae, var. it?lica), couves (Brassicaoleraceae, var. acephala) e repolhos (Brassicaoleraceae, var. capitata) org?nicas atrav?s da determina??o da umidade, res?duos minerais fixos (cinzas), teor de lip?dios, prote?nas totais, carboidratos, fibras sol?veis e insol?veis, s?lidos sol?veis totais, acidez total, pH, ?cido asc?rbico e res?duos de agrot?xicos. A atividade antioxidante foi baseada no sequestro do radical DPPH e teor de fen?licos totais. Foram realizadas an?lise microbiol?gicas referentes aos indicadores higi?nico-sanit?rios de alimentos e comparadas aos padr?es da legisla??o brasileira. Em complementa??o, foi realizado estudo de avalia??o do o risco cr?nico da ingest?o de pesticidas pela dieta utilizando a Ingest?o Di?ria Te?rica M?xima (IDTM) e a Estimativa de Ingest?o Di?ria (EDI) a partir dos limites m?ximos de res?duos estabelecidos pela legisla??o brasileira e dados de consumo alimentar de crian?as de 10 anos, e valores de res?duos de agrot?xicos detectados em alimentos da agricultura convencional. Os resultados obtidos foram comparados com os limites de seguran?a (Dose di?ria aceit?vel - IDA) em fun??o do peso m?dio da popula??o estudada. Dentre as hortali?as analisadas, a efetividade na capacidade antioxidante foi obtida, em ordem decrescente, pelos br?colis, couves, repolhos e cenouras. Sob o par?metro microbiol?gico, as hortali?as avaliadas apresentaram qualidade higi?nico-sanit?ria satisfat?ria. N?o foram encontrados res?duos de agrot?xicos acima do limite de detec??o, tanto para os autorizados como para aqueles n?o autorizados nas culturas org?nicas analisadas. As hortali?as org?nicas estudadas atendem ao padr?o de qualidade e seguran?a exigidos pela Lei n?11947/2009 devendo ser priorizadas para a alimenta??o escolar. Na avalia??o do risco cr?nico da ingest?o de pesticidas pela dieta a laranja, ma??, tomate, arroz e feij?o foram os alimentos que mais contribu?ram para a ingest?o. Os compostos que apresentaram maior risco foram dicofol, dimetoato, metidationa, pirimif?s met?lico, tetraconazol e carbaril por apresentarem a IDTM maior que a IDA. Palavras-chave: alimentos org?nicos, vegetais, seguran?a alimentar.