02291naa a2200385 a 450000100080000000500110000800800410001902400500006010000210011024501070013126000090023852012290024765000090147665000110148565000150149665000120151165000130152365000100153665000100154665000210155665000160157765000100159365300100160365300170161365300200163065300280165065300170167865300220169565300090171770000240172670000230175070000200177370000210179377300910181421111472019-11-05       2019    bl uuuu     u00u1 u    #d7 a10.1590/1807-1929/agriambi.v23n2p133-1372DOI1 aAFONSO, M. R. A.  aMicrostructure and flow properties of lyophilized mango pulp with maltodextrin.h[electronic resource]  c2019  aThe present study had as objective to determine the flow properties and behavior of lyophilized mango pulp powder as a function of different concentrations of maltodextrin. In the samples of the powders contain 5, 10 and 15% of maltodextrin the angle of effective internal friction, wall friction angle, flow index and bulk density were determined. The microstructure was evaluated by scanning electron microscopy. The freeze-dried samples are characterized as having an amorphous structure, and the drying aid used modified the surface of the particles. The flow index was 3.19, 4.28 and 4.53 for samples containing, respectively, 5, 10 and 15% maltodextrin. Increasing the concentration of maltodextrin in the mango pulp decreased the effective angles of internal friction and wall friction. The bulk density of the powders increased with increasing concentration of maltodextrin for the samples containing 5, 10 and 15% of the maltodextrin, being equal to 597.8, 689.8 and 691.3 kg m-3, respectively. Thus, it was concluded that the addition of maltodextrin modified the shape of the particles, decreased segregation, affected the flow properties of the mango powders, facilitating flow and increasing their bulk density.  aFlow  aFruits  aMicroscopy  aPowders  aRheology  aFruta  aManga  aMangifera Indica  aMicroscopia  aPolpa  aFluxo  aFruta em pó  aIndice de fluxo  aManga com maltodextrina  aPó da polpa  aPolpa liofilizada  aPós1 aRODRIGUES, B. K. M.1 aCOSTA, J. M. C. da1 aRYBKA, A. C. P.1 aWURLITZER, N. J.  tRevista Brasileira de Engenharia Agrícola e Ambientalgv. 23, n. 2, p. 133-137, 2019.