Flender/Flender Gear Units/Bevel-helical speed reduction gearboxes B4
st activity is automatically reduced. Temperature and moisture together largely determine the length of safe storage life. Respiration of grain

and the pests leads to the consumption of oxygen and release of carbon dioxide during storage speed reducersposition of the

intergranular atmosphere inuences the type of metabolism of themicroorganisms and the grain. It also affects nonenzymatic reactions and certain enzymaticreactions.

Oxygen and carbon dioxide levels also affect insect population and mold growth. 1 Rajendran Interactions of the physical factors along

with the biological process in the grain storage ecosystem lead to changes in the grain composition and its functional properties.Free fatty acids and glycerol are formed when grain lipids are broken down by lipases.The free fatty acid content of grain is sensitive indicator of deterioration during storage(9,. Changes in carbohydrates include decreases in the amounts of nonreducing sugars and total sugars. Considerable loss in vitamin activity in yellow corn and sorghum, decreases in water-soluble vitamins, and an increases in the level of phosphorus com-pounds in grains during storage have been reported (. Functional properties such as bread-making quality of wheat, milling and cooking quality of rice, malting quality of barley, and starch separation in corn are also likely to be affected during storage (9,. Storage of rice leads to aging and aged rice is preferred in some regions in Asia. Decreased levels of 2-acetyl-1-pyrroline, an aroma principle in aromatic rice following storage of rice, have been observed. Reductions in the content offree amino acids, nonreducing sugars, and albumin have been noted in ordinary rice (. 1.3.3 Biotic Factors and Treatment Effects Biotic factors such as insects, mites, rodents, birds, and microorganisms are responsible for quantitative and qualitative losses of the stored grains. They are also responsible for the contamination, heating, and associated storage problems, and