Contribution to the water disinfection study by photosensitization with plants extracts.

Sunda, M.; Rosillon, Françis; Taba, K. M.

doi:10.1051/wqual/2008006

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Article (Scientific journals)

Contribution to the water disinfection study by photosensitization with plants extracts.

Sunda, M.; Rosillon, Françis; Taba, K. M.

2008 • In European Journal of Water Quality, 39 (2), p. 199-209

Peer reviewed

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https://hdl.handle.net/2268/24622

DOI
10.1051/wqual/2008006

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Keywords :

Singlet oxygen; plants extracts; photodynamic activity

Abstract :

[en] Solar water disinfection study using plants extracts, in tryptophan media (1%), has revealed a photodynamic activity of Cassia alata, Cassia occidentalis, Carica papaya, Phyllantus niruri and Coleus kilimandschari aqueous extracts. Aqueous extracts of Lantana camara, Cymbopogon citratus and Hibiscus rosa-sinensis produce a bactericidal effect. Water disinfection by alkaloid extracts of Cassia alata, Cassia occidentalis, Carica papaya, Phyllantus niruri and Coleus kilimandschari shows a bactericidal effect. On the other hand, unalkaloid extracts of the same compounds especially present a photodynamic activity. The photodynamic activity of unalkaloid extract is due to the presence of quinones and anthraquinones which generate singlet oxygen.The singlet oxygen generated attacks and damages the microorganisms contained in polluted water. The necessary sunlight time for coliform inactivation and other germs is one hour for 2 ml of extracts/liter of polluted water.

Disciplines :

Aquatic sciences & oceanology

Author, co-author :

Sunda, M.; Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Département des sciences et gestion de l'environnement

Rosillon, Françis

Taba, K. M.

Language :

English

Title :

Contribution to the water disinfection study by photosensitization with plants extracts.

Publication date :

2008

Journal title :

European Journal of Water Quality

ISSN :

1818-8710

eISSN :

2100-0646

Publisher :

ASEES

Volume :

Issue :

Pages :

199-209

Peer reviewed :

Peer reviewed

Available on ORBi :

since 30 September 2009

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