Aim of the study: Genista tenera is a plant endemic to the island of Madeira and is used in folk medicine to control diabetes. In the present work we evaluate the anti hyperglycaemic activity of its n-butanol extract and determine its chromatographic prof. - The British Council and the Ministerio da Ciencia e do Ensino Superior ; Fundacao para a Ciencia e Tecnologia ; Thermo Finnigan's ; Analytical Chemistry Tr...