PROBLEM TO BE SOLVED: To provide a rice polishing method capable of producing polished white rice with excellent preservability, excellent flavor and high added value by processing brown rice with superheated steam even if the brown rice is polished in such a way that a boundary in an aleurone layer in contact with the albumen in the brown rice is left.SOLUTION: Unprocessed brown rice is heated for 2-10 seconds with superheated steam under normal pressure and at a temperature of 180-250°C to generate dew-concentration water on the surface of the brown rice in the initial stage of heating. The dew-condensation water is removed by heating the brown rice with superheated steam, and the superheated steam is removed and the heated brown rice is cooled. The brown rice thus obtained is polished in such a way that the boundary in the aleurone layer in contact with the albumen is left.COPYRIGHT: (C)2012,JPO&INPIT【課題】玄米を過熱水蒸気処理することによって、玄米における糊粉層のうち胚乳に接する境界部を残すように玄米を搗精しても保存性に優れ、良食味で付加価値の高い精白米を作ることができる精米方法を提供する。【解決手段】常圧であり、且つ180℃~250℃の過熱水蒸気を用いて、2秒~10秒の間で未処理の玄米を加熱し、加熱初期に玄米の表面に結露水を発生させると共に、過熱水蒸気による玄米の加熱によって、結露水を除去させ、過熱水蒸気を分離させ、冷却して得られた玄米を、糊粉層のうち、胚乳に接する境界部を残すように搗精する。【選択図】図1
