Rice, as a grain, presents some very difficult problems […]
Rice, as a grain, presents some very difficult problems, unlike most other grains, as the rice is processed from the time it is in the field and reaching maturity, to the time it is ready for wholesale or retail distribution and consumption.
A principal reason for processing problems, unique to rice, is the particular nature of the rice kernels and particularly the starchy endosperm of the kernel. The endosperm has a flinty nature which is another way of saying that the kernel may be considered to be brittle and rather easily fractured.
Rice drying apparatus, a dryer directing heated air through the rice being dried, a control maintaining predetermined differential between the wet bulb and dry bulb temperature of the air used in drying, a modulating apparatus controlling the heat of the burner, the method of establishing a predetermined differential between wet bulb and dry bulb temperature of the air used in drying rice and the like, and subsequently increasing the differential as drying proceeds.
The rice kernels are quite hygroscopic so as to readily absorb moisture, and the rice kernels also give up their moisture relatively easily. The rice kernels have a propensity to shatter or fissure quite easily, and when this occurs, the individual kernels break down and result in the formation of a powder or flour. In any event, fissured or shattered kernels have a very low value in the marketplace as does the resulting powder or flour, as compared to the whole kernels.