Effects of Carrier Agents and Relative Humidity on the Physicochemical and Microstructural Characteristics of Hot Air-Dried Asian Pear (Pyrus pyrifolia Nakai cv. Niitaka) Powder

For improving the stability of Asian pear powder (APP), rice bran dietary fiber (RD) (used for the first time) and maltodextrin (MD) were employed as carrier agents; the physicochemical and microstructural characteristics of APP during room storage at various relative humidity (RH) levels for 25 days were then evaluated. The RD-containing APP had a higher glass transition temperature, increased flowability, smaller particle size, and lower water...