Abstract: Dry powders of amino acids which exhibit great oral meltability and solubility, may be produced by spray drying a hydrous liquid of amino acids to produce a powder of amino acids, where the hydrous liquid of amino acids is prepared into the form of microfine liquid droplets in the presence of trehalose for spray drying, to obtain a powder having a mean particle size of 0.1 ?m to 15 ?m, as well as granulating and drying during the spray drying or after the spray drying, to obtain a granulated powder having a mean particle size of 20 ?m to 1,000 ?m.

Abstract: Dry powders of amino acids which exhibit great oral meltability and solubility, may be produced by spray drying a hydrous liquid of amino acids to produce a powder of amino acids, where the hydrous liquid of amino acids is prepared into the form of microfine liquid droplets in the presence of trehalose for spray drying, to obtain a powder having a mean particle size of 0.1 ?m to 15 ?m, as well as granulating and drying during the spray drying or after the spray drying, to obtain a granulated powder having a mean particle size of 20 ?m to 1,000 ?m.

Abstract: Dry powders of amino acids which exhibit great oral meltability and solubility, may be produced by spray drying a hydrous liquid of amino acids to produce a powder of amino acids, where the hydrous liquid of amino acids is prepared into the form of microfine liquid droplets in the presence of trehalose for spray drying, to obtain a powder having a mean particle size of 0.1 ?m to 15 ?m, as well as granulating and drying during the spray drying or after the spray drying, to obtain a granulated powder having a mean particle size of 20 ?m to 1,000 ?m.

Abstract: In order to provide a spray dry method capable of producing a dry powder retaining the savor and flavor of a raw material and having solubility without any thermal deterioration, at a mass scale, a method for producing a dry powder keeping savor and flavor from a hydrous liquid material containing a savory and flavorful component and, preferably, a hygroscopic component by spray drying is disclosed, the method including spray drying the hydrous liquid material at the microfine liquid droplet state in gas atmosphere at the outlet temperature of a spray dryer at 20 to 90° C. and the outlet relative humidity of 1% RH to 40% RH, to prepare a dry powder of a mean particle size of 0.1 ?m to 15 ?m.