Skip to main content
Article thumbnail
Location of Repository

Tratamento químico de hortaliças poluídas Chemical treatment of polluted vegetables

By Renato Baruffaldi, Thereza Christina Vessoni Penna, Irene Alexeevna Machoshvili and Lucia Eiko Abe

Abstract

Das amostras de hortaliças em folhas coletadas no período de abril a agosto de 1981, no Entreposto Comercial da Cidade de São Paulo, SP (Brasil), 75% e 57% apresentaram contagens de coliformes fecais e de Escherichia coli, por grama de produto, superiores a 2 x 10² respectivamente; e em 85% constatou-se a presença de parasitas protozoários ou/e helmintos. O tratamento químico das folhas de alface (Lactuca sativa), com solução de hipoclorito de sódio, por um período de exposição de 10 min à concentração de 40 ppm de cloro livre, mostrou-se eficaz do ponto de vista parasitológico.<br>The effectiveness of chemicals as desinfectants for reducing the parasite contamination of lettuce leaves (Lactuca sativa, L.) was investigated. Potassium permanganate at 1: 5000 and 1: 10000 was employed, while sodium hypochlorite compound was used in con centrations of 10, 15, 20, 25, 30 and 40 ppm. In all experiments the contact time was 5,10, 20 and 40 minutes. The expousure of lettuce leaves to sodium hypochlorite 40 ppm of free cloro for 10 minutes was found to be highly effective

Topics: Hortaliças, Coliformes fecais, Escherichia coli, Hipoclorito de sódio, Vegetables, Fecal coliforms, Escherichia coli, Sodium hypochlorite, LCC:Public aspects of medicine, LCC:RA1-1270, LCC:Medicine, LCC:R, DOAJ:Public Health, DOAJ:Health Sciences
Publisher: Faculdade de Saúde Pública da Universidade de São Paulo
Year: 1984
DOI identifier: 10.1590/S0034-89101984000300004
OAI identifier: oai:doaj.org/article:ac97db346373440498cb0c97117beaad
Journal:
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://doaj.org/search?source=... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.