Flour Milling: Sieving is integral to the milling process in flour production. It helps remove bran germ and other coarse particles from the milled flour to produce a finer more uniform product. Ingredient Screening: Food ingredients such as spices grains and powders often undergo sieving to remove any foreign particles or contaminants before they are used in food processing. Powdered Food Processing: Powdered food products like sugar cocoa powder and powdered milk undergo sieving to ensure uniform particle size and to remove any lumps or aggregates that may have formed during storage or processing.