Method for drying rice

摘要

The invention relates to a method for drying rice, in which, during the drying process, the grains of rice pass through surface states which have various pairs of values of temperature (T) of the surface and moisture (U) of the surface, the surface of the grains of rice remaining in a viscoelastic state during the drying process, and in which, in a diagram comprising temperature (T) of the surface of the grains of rice and moisture (U) of the surface, a) the temperature (Tv) of the surface of the grains of rice lies no more than 40° C. above the temperature (Tg) on the glass transition curve of the rice at the point of the same moisture of the surface and/or b) the moisture (Uv) of the surface of the grains of rice lies no more than 20% above the moisture on the glass transition curve of the rice at the point of the same temperature of the surface.

主权项

1. A method for drying rice, in which, during the drying process, the grains of rice pass through surface states which have various pairs of the values of surface temperature and surface moisture, and wherein at least one subregion of the surface of the grains of rice remains during at least a part of the drying process in a viscoelastic state in which,
a) the surface temperature of the grains of rice does not lie more than 40° C. above the surface temperature on a glass transition curve of the rice at the point of equal surface moisture; and/or b) the surface moisture of the grains of rice does not lie more than 20% above the moisture on the glass transition curve at the point of equal surface temperature, wherein the passage through the temperature/moisture states takes place with an increase of the surface temperature and a decrease of the surface moisture, wherein the transition to the glass range is prevented by controlling the relative humidity of the drying climate at each temperature during the drying process.