Segunda-feira, Julho 09, 2007

Novo serviço prestado pelas abelhas

A cada dia que passa, mais surpresas aparecem em nosso dia-a-dia. Agora, cientistas da Universidade Estadual Paulista (Unesp) e da Universidade de São Paulo (USP) nos apresentam a novidade de que a análise do mel de abelha pode nos levar a um melhor controle da qualidade para o consumo humano, ao mesmo tempo, e acredito, não menos importante, a um excelente bio indicador da contaminação do meio ambiente por pesticidas utilizados na agricultura.
Mas como assim? Pois é, os resultados conseguidos em uma pesquisa que se estendeu por seis anos, realizada em uma área de preservação ambiental cercada de campos agrícolas, em Bauru, possibilitou aos cientistas detetar e quantificar pesticidas presentes no mel, criando e validando a técnica que está apresentada na revista Química Nova. A região objeto dos estudos, conhecida como reserva Campo Novo Vargem Limpa, tem cerca de 3 milhões de metros quadrados e 35 colméias de abelhas domésticas (
Apis mellifera).
Durante o período de observação das colméias, os autores do estudo encontraram 48 tipos diferentes de pesticidas nas amostras de mel. Os pesticidas no mel são extraídos com o auxílio de solventes orgânicos após a diluição do mel em água.

 
 

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