SciELO - Scientific Electronic Library Online

vol.18 issue3Prevalence of hypovitaminosis A in preschool children in a town of the Metropolitan Area of S. Paulo, BrazilEnterotoxigenic Staphylococcus aureus in the nose of hospital food handlers, João Pessoa, Brazil author indexsubject indexarticles search
Home Page  

Services on Demand




Related links


Revista de Saúde Pública

On-line version ISSN 1518-8787Print version ISSN 0034-8910


BARUFFALDI, Renato; PENNA, Thereza Christina Vessoni; MACHOSHVILI, Irene Alexeevna  and  ABE, Lucia Eiko. Chemical treatment of polluted vegetables. Rev. Saúde Pública [online]. 1984, vol.18, n.3, pp.225-234. ISSN 1518-8787.

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.

Keywords : Vegetables; Fecal coliforms; Escherichia coli; Sodium hypochlorite.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )