Fecha de publicación: 12/06/2008 Fuente: WIPO "varroa" The present invention relates to starch foam microparticles having a porous structure that comprises a network of mostly open cells, and which typically have a diameter of less than or equal to about 50 microns. The present invention also relates to novel uses for the starch foam microparticles in beekeeping and in the pharmaceutical, plastics and fragrance industries.