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

Ferreira, Rodrigo S.; Napoleão, Thiago Henrique; Santos, Andréa F. S.; Sá, Roberto Araújo; Carneiro-da-Cunha, Maria G.; Morais, Márcia Maria Camargo de; Silva-Lucca, Rosemeire A.; Oliva, Maria Luíza Vilela; Coelho, Luana Cassandra Breitenbach Barroso; Paiva, Patrícia Maria Guedes

doi:10.1111/j.1472-765x.2011.03089.x

Cited by 112 publications

(60 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The seeds of Moringa oleifera tree species have been shown effective for this operation, since they have coagulant activity responsible for the aggregation of particles and microorganisms, which can be more easily removed during the water treatment (FERREIRA et al, 2011). Other authors also emphasize the use of Moringa oleifera as a low cost alternative when compared with the use of chemical coagulants (MATOS et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Water treatment by multistage filtration system with natural coagulant from Moringa oleifera seeds

2012

View full text Add to dashboard Cite

ABSTRACT:This study presents an evaluation of a pilot multistage filtration system (MSF) with different dosages, 131 mg L -1 and 106 mg L -1 , of the natural coagulant extracted from Moringa oleifera seeds in pre-filtration and slow filtration stages, respectively. The system was comprised by a dynamic pre-filter unit, two upflow filters in parallel and four slow filters in parallel, and in one of the four filters had the filter media altered. The performance of the system was evaluated by monitoring some water quality parameters such as: turbidity, apparent color and slow filter load loss. The stages that have received the coagulant solution had better treatment efficiency compared with the steps without it. However, the direct application of the coagulant solution in the slow filter caused rapid clogging of the non-woven blanket and shorter career length.KEYWORDS: multistage filtration system, slow filtration, water coagulation. TRATAMENTO DE ÁGUA PARA ABASTECIMENTO PELO SISTEMA FILME COM EXTRATO DE SEMENTES DE Moringa oleifera RESUMO:O trabalho apresenta uma avaliação do sistema-piloto de filtração em múltiplas etapas, com aplicação de diferentes dosagens (131 mg L -1 e 106 mg L -1 ) do coagulante natural extraído de sementes de Moringa oleifera, nas etapas de pré-filtração e filtração lenta, respectivamente. O sistema foi constituído por uma unidade de pré-filtro dinâmico, duas unidades de pré-filtros de fluxo ascendente em paralelo e quatro unidades de filtros lentos em paralelo, sendo que, em um dos filtros lentos, houve variação do meio filtrante. O desempenho do sistema foi avaliado por meio de parâmetros como turbidez, cor aparente e perda de carga dos filtros lentos. As etapas que receberam a solução coagulante tiveram maior eficiência de tratamento se comparadas com as etapas sem o recebimento da mesma. Entretanto, a aplicação direta da suspensão coagulante no filtro lento causou rápida colmatação da manta e menor tempo de duração da carreira. PALAVRAS-CHAVE:filtração em múltiplas etapas, filtração lenta, coagulação da água.

show abstract

Section: Introductionmentioning

confidence: 99%

Water treatment by multistage filtration system with natural coagulant from Moringa oleifera seeds

2012

View full text Add to dashboard Cite

show abstract

“…The use of coagulation-flocculation in water treatment in developing countries has been tested and proven to be effective; however, the availability of these chemicals and relatively high cost place this treatment method beyond the means of many people (World Health Organization 2002). The use of Moringa Oleifera has shown to be effective at reducing turbidity as well as improving microbial quality in water (Nkurunziza et al 2009;Pritchard et al 2009;Ferreira et al 2011); however, it is not available in all regions of concern and the process requires extraction of the lectin from the seed.…”

Section: Suspended Colloidal Particlesmentioning

confidence: 99%

Optimizing the solar water disinfection (SODIS) method by decreasing turbidity with NaCl

Dawney

Pearce

2012

Journal of Water, Sanitation and Hygiene for Development

View full text Add to dashboard Cite

Abstract.Solar water disinfection (SODIS) has proven to be effective at reducing diarrheal incidence in epidemiological intervention studies. However, the SODIS method is limited to waters of low turbidity (<30NTU). This study investigates the use of common table salt (NaCl) to reduce the turbidity of water containing suspended colloidal clay particles for use in the SODIS method. Three representative clays found in tropical soils (kaolinite, illite, and bentonite) were tested at three levels of turbidity (50, 100, and 200 NTU) for their flocculating behaviour with multiple NaCl concentrations to find the optimum. Supernatants were tested for sodium concentration for comparison against health and taste thresholds. Results show that unlike kaolinite and illite, pure bentonite solutions were shown to be very responsive to NaCl and produced supernatants with as low as 4 NTU (98% particle removal efficiency). This study has shown that NaCl, in combination with high-activity clay particles in solution, may effectively reduce turbidity to levels suitable for SODIS treatment, thereby expanding the number of people who can utilize the technology effectively.Keywords: clay, drinking water, flocculation, sanitation, SODIS, sodium, turbidity To be published: Brittney Dawney and Joshua M. Pearce, "Optimizing the solar water disinfection (SODIS) method by decreasing turbidity with NaCl",

show abstract

“…Lectin from Moringa oleifera was originally isolated from the seed aqueous extract by chitin column chromatography as a larvicidal agent again Aedes ageypti [18]. The water-soluble Moringa oleifera lectin shows effective antibacterial activity by reducing the growth of Staphylococcus aureus in polluted waters [19]. Moura et al [20] revealed that the water-soluble Moringa oleifera lectin show bactericidal effects against Bacillus cereus, Bacillus pumillus, Bacillus megaterium, Micrococcus sp., Pseudomonas sp., Pseudomonas fluorescens, Pseudomonas stutzeriand Serratia marcescens by affecting the growth, survival and cell permeability of these bacteria.…”

Section: Antibacterial Activities Of Moringa Oleiferamentioning

confidence: 99%

Mini Review on Antimicrobial Activity and Bioactive Compounds of Moringa oleifera

Wang¹,

Chen²,

Wu³

2016

Med chem (Los Angeles)

View full text Add to dashboard Cite

Moringa oleifera is a kind of woody tree traditionally used as a nutritional source and as a medicinal plant. It grows wild in the tropical and subtropical areas of Asia, Africa and the Middle East. In China, Moringa oleifera trees are planted at a large scale in Yunnan, Guangdong and Guangxi Provinces. As a nutritional and medicinal plant, Moringa oleifera is a rich source of bioactive compounds with diverse pharmacological activities. It has been widely used in the treatment of certain diseases as a traditional medicinal herb. Antimicrobial activity is the most studied property of Moringa oleifera. Many studies have shown that the leaf, flower, bark, root, seed, and nearly all types of Moringa oleifera tissues exhibit antimicrobial activity including antibacterial, antifungal, antiviral and antiparasitic activity. This review describes progress on research conducted to understand the antimicrobial activity and related bioactive properties of Moringa oleifera compounds, and discusses the potential use of Moringa oleifera in the control of pathogenic microbes.

show abstract

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

Cited by 112 publications

References 23 publications

Water treatment by multistage filtration system with natural coagulant from Moringa oleifera seeds

Water treatment by multistage filtration system with natural coagulant from Moringa oleifera seeds

Optimizing the solar water disinfection (SODIS) method by decreasing turbidity with NaCl

Mini Review on Antimicrobial Activity and Bioactive Compounds of Moringa oleifera

Contact Info

Product

Resources

About