Solar water disinfection (SODIS): impact on hepatitis A virus and on a human Norovirus surrogate under natural solar conditions
Int. microbiol
; 18(1): 41-49, mar. 2015. ilus, tab
Artigo
em Inglês
| IBECS
| ID: ibc-141143
Biblioteca responsável:
ES1.1
Localização: BNCS
ABSTRACT
This study evaluates the effectiveness of solar water disinfection (SODIS) in the reduction and inactivation of hepatitis A virus (HAV) and of the human Norovirus surrogate, murine Norovirus (MNV-1), under natural solar conditions. Experiments were performed in 330 ml polyethylene terephthalate (PET) bottles containing HAV or MNV-1 contaminated waters (103 PFU/ml) that were exposed to natural sunlight for 2 to 8 h. Parallel experiments under controlled temperature and/or in darkness conditions were also included. Samples were concentrated by electropositive charged filters and analysed by RT-real time PCR (RT-qPCR) and infectivity assays. Temperature reached in bottles throughout the exposure period ranged from 22 to 40ºC. After 8 h of solar exposure (cumulative UV dose of ~828 kJ/m2 and UV irradiance of ~20 kJ/l), the results showed significant (P < 0.05) reductions from 4.0 (±0.56) ×104 to 3.15 (±0.69) × 103 RNA copies/100 ml (92.1%, 1.1 log) for HAV and from 5.91 (±0.59) × 104 to 9.24 (±3.91) × 103 RNA copies/100 ml (84.4%, 0.81 log) for MNV-1. SODIS conditions induced a loss of infectivity between 33.4% and 83.4% after 4 to 8 h in HAV trials, and between 33.4% and 66.7% after 6 h to 8 h in MNV-1 trials. The results obtained indicated a greater importance of sunlight radiation over the temperature as the main factor for viral reduction (AU)
RESUMEN
No disponible
Texto completo:
Disponível
Coleções:
Bases de dados nacionais
/
Espanha
Contexto em Saúde:
ODS3 - Saúde e Bem-Estar
Problema de saúde:
Meta 3.3: Acabar com as doenças tropicais negligenciadas e combater as doenças transmissíveis
Base de dados:
IBECS
Assunto principal:
Água Potável
/
24961
/
Desinfecção da Água
/
Vírus da Hepatite A
/
Norovirus
Idioma:
Inglês
Revista:
Int. microbiol
Ano de publicação:
2015
Tipo de documento:
Artigo
Instituição/País de afiliação:
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT)/Spain
/
University of Santiago de Compostela/Spain