https://socictopen.socict.org/items/show/18178
title: Microbiological quality of organic vegetables produced in soil treated with different types of manure and mineral fertilizer Qualidade microbiológica de vegetais orgânicos produzidos em solo tratado com diferentes tipos de esterco e fertilizante mineral
subject: Animal manure, Esterco animal, Hortaliças orgânicas, Salmonella, coliformes, coliforms, escherichia coli, organic vegetables
description: An attempt was made to evaluate microbiological quality of horticultural crops grown organically. Three species of vegetables were used, lettuce (Lactuva sativa), radish (Raphanus sativus) and spinach (Tetragonia expansa), grown organically, in fertile soil. Six different treatments were applied: mineral fertilizer, chicken, cow, and pig manure, chicken litter and cow manure, in association with a liquid foliar biofertilizer. These crops were handled according to correct agronomic practices for growing crops organically for commercial purposes. Samples were examined for the Most Probable Number (MPN/g/mL) of total and fecal coliforms and to detect the presence of Escherichia coli and Salmonella spp. All analyzed samples were considered acceptable for consumption, as Salmonella spp. was not detected. However, 63.3%, 50.0%, and 23.3% of the samples of lettuce, radish and spinach, respectively, contained >10² total coliforms/g of product. None of the samples of spinach or radish presented >10² fecal coliforms/g, and only 6.6% of lettuce samples contained >10² fecal coliforms/g. The presence of E. coli was confirmed in one sample of spinach, cultivated with cow manure.O objetivo do presente trabalho foi avaliar a qualidade microbiológica de hortaliças orgânicas produzidas sob diferentes condições. Três espécies de vegetais, alface (Lactuva sativa), rabanete (Raphanus sativus) e espinafre (Tetragonia expansa), foram cultivadas no sistema orgânico, em solo fertilizado com seis tratamentos diferentes: adubo mineral, estercos de galinha, bovino e suíno, cama de frango e esterco bovino associado com biofertilizante líquido de aplicação foliar. O cultivo das hortaliças foi feito de acordo com as práticas agronômicas recomendadas para o sistema orgânico em escala comercial. Das hortaliças cultivadas, foram coletadas amostras para a determinação do Número Mais Provável de coliformes totais e termotolerantes e detecção da presença de Escherichia coli e Salmonella spp. Todas as a…
creator: Débora Cabral Machado, Carla Marques Maia, Isabel Dias Carvalho, Natan Fontoura da Silva, Maria Cláudia Dantas Porfírio Borges André, Álvaro Bisol Serafini
source: Brazilian Journal of Microbiology
publisher: Sociedade Brasileira de Microbiologia
date: 2006
relation: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400025
coverage: Microbiology