PAES 206

• Bran


  Outer layer of the brown rice consisting of the aleurone cells covering the endosperm of the rice grain
• Broken grains


  Pieces of grains smaller than three-fourths (3/4) of the average length of the unbroken kernels
• Brown rice


  Dehulled rice, cargo rice, dehisked rice - rice kernels from which only the hull has been removed and with the bran layer still intact
• Coefficient of hulling


  Ratio of the dehulled grains to the total amount of grain input, expressed in percent
• Coefficient of wholeness


  Ratio of the whole brown rice to the total amount of dehulled grains, expressed in percent
• Head rice


  Grain or a piece of a grain with its length equal to or greater than three-fourths (3/4) of the average length of the whole kernels
• Huller


  Component of a rice mill that removes the hulls (palea and lemma) from the grains
• Hulling efficiency


  Product of the coefficient of hulling and the coefficient of wholeness of grains, expressed in percent
• Input capacity


  Weight of paddy per unit loading time into the huller, expressed in metric tons per hour
• Milled rice


  White rice - grains obtained after the removal of hull, bran and germ
• Milling capacity


  Quantity of paddy that the rice mill can process to a specified quality per total milling time, expressed in metric tons per hour
• Milling degree


  Extent or degree by which the bran layer of the brown rice is removed as a result of whitening
• Milling recovery


  Ratio of the weight of milled rice to the total weight of paddy, expressed in percent
• Milling recovery index


  Ratio of the milling recovery obtained in actual testing, to the milling recovery obtained from the laboratory test mill
• Multi-pass rice mill


  Rice mill that employs a series of two or more whitening/polishing machines
• Paddy


  Rough rice, "palay" - unhulled grain of Oryza sativa, which means, grain with the glumes enclosing the kernel
• Percent head rice


  Ratio of the weight of grains with a size of three-fourths (3/4) or more of the whole grain to the total weight of milled rice, expressed in percent
• Percent head rice index

  Ratio of the percent head rice obtained in actual testing, to the percent head rice obtained from the laboratory test mill
• Polisher


  Device of a rice mill, which removes the remaining bran on the milled rice and produces a glossy appearance
• Rice hull


  Rice husk - outer most rough covering of the paddy grain (palea and lemma) consisting of the empty glumes, floral glumes, and awn
• Rice mill


  Machine used to remove the hull and bran of the paddy to produce milled rice and consists mainly of hulling and whitening assembly
• Cone "cono" type rice mill

  • Has an under-runner stone disc huller and vertical cone whitener
• Rubber roll type rice mill

  • Uses rubber roll huller and utilizes friction and/or combination of other types of whitener
• Centrifugal type rice mill

  • Has a huller with rotating blades that utilizes pressure such as Coriolis' force, frictional force from the blades, or impact force at collision with the blades and the peripheral surface
• Single-pass rice mill


  Rice mill that employs only one whitening machine
• Well-milled rice


  Rice grain from which the hull, the germ, the outer bran layers, and the greater part of the inner bran layer have been removed, but part of the lengthwise streaks of the bran layers may still be present on less than 20% of the sample grains
• Whitener


  Component of a rice mill that removes the bran in the brown rice
• Abrasive type whitening machine


  • Consists of a cylinder or cone coated with abrasive material such as emery stone or any similar materials enclosed in a perforated steel housing
• Friction type whitening machine

  • Consists of a ridged cylinder enclosed in a perforated steel housing