Résumé dans la langue de publication, traduction non disponible An amphoteric porous particulate comprising a basic polysaccharide and a polymer of an organic acid containing a reactive vinyl group or a salt thereof and having an average particle size of 50 um or less, which is capable of adsorbing a large amount of an acid or a base that is stronger than the acid or basic groups thereof and which is useful as a deodorant, a cosmetic or the like. The amphoteric porous particulate is obtained by emulsifying or suspending an aqueous solution containing a basic polysaccharide and an organic acid having a reactive vinyl group in a hydrophobic solvent and thereafter effecting polymerization thereof. A deodorant comprising a chitosan particulate having an average particle size of 0.01 to 50 um as a deodorant. A chitosan particulate having an available amino group content of 1.0 X 10**-7 to 1.0 X 10**-2 mol/g and a specific surface area of 10 to 300 m**2 /g is particularly useful. A polysiloxane having long-chain alkyl groups and a melting point of 20 DEG.C or above is useful as an oil component of a deodorant.