Efeito biocida de mandelatos organoestânicos sobre Fusarium oxysporum f. sp. cubense

• Autor(a) principal: Araujo, Edelcio Tavares de
• Data de Publicação: 2004
• Outros Autores: Melo, Walclée de Carvalho, Guerreiro, Mário César, Barbiéri, Roberto Santos, Abreu, Celeste Maria Patto de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UFLA
• Texto Completo: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542004000100004; http://repositorio.ufla.br/jspui/handle/1/5824
• topic: Complexos organoestânicos; Efeito biocida; Fungo; Organotin complexes; Biocide effect; Fungus

Organotin compounds are substances which have been utilized as biocides. The advantage of using this class of compounds is their degradation into tin dioxide (SnO2), which is non-toxic to environment . The organotin complexes were obtained from the reaction of equimolar amounts of the isomers of the acids R and S mandelic and diphenyltin dichloride with the purpose of testing the biocide effect of the new complexes on cultures of the fungus Fusarium oxysporum f.sp. cubense by evaluating in in vitro direct test in BDA culture medium at 25oC. Concentrations of 0, 25, 100, 250 and 500 mg/kg were tested in quadruplicates, with readings after 2, 4 and 7 days. The R and S complexes are insoluble in the BDA medium, the chaotically dispersed grains effectively inhibited the fungal growth.