Coagulant and antibacterial activities of the water-soluble seed lectin from Moringa oleifera

• Autor(a) principal: Ferreira, R. S. [UNIFESP]
• Data de Publicação: 2011
• Outros Autores: Napoleao, T. H., Santos, A. F. S., Sa, R. A., Carneiro-da-Cunha, M. G., Morais, M. M. C., Silva-Lucca, Rosimeire Aparecida [UNIFESP], Oliva, Maria Luiza Vilela [UNIFESP], Coelho, L. C. B. B., Paiva, P. M. G.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNIFESP
• Texto Completo: http://dx.doi.org/10.1111/j.1472-765X.2011.03089.x; http://repositorio.unifesp.br/handle/11600/33902
• topic: antibacterial activity; coagulant activity; lectin; Moringa oleifera; seeds

Aims: the aim of this work was to analyse the coagulant and antibacterial activities of lectin isolated from Moringa oleifera seeds that are used for water treatment.Methods and Results: the water-soluble M. oleifera lectin (WSMoL) was separated from nonhemagglutinating components (NHC) by chitin chromatography. WSMoL fluorescence spectrum was not altered in the presence of ions that are often present in high concentrations in polluted waters. Seed extract, NHC and WSMoL showed coagulant activity on a turbid water model. Both NHC and WSMoL reduced the growth of Staphylococcus aureus, but only WSMoL caused a reduction in Escherichia coli. WSMoL was also more effective in reducing the growth of ambient lake water bacteria.Conclusions: Data obtained from this study indicate that WSMoL is a potential natural biocoagulant for water, reducing turbidity, suspended solids and bacteria.Significance and Impact of the Study: Moringa oleifera seeds are a material effective in the treatment of water.