Identification of milk and dairy products

1. Identification of Fresh Milk Fresh milk is a milky white or slightly yellow uniform colloidal fluid, with no precipitation, no clot, no impurities, no starch sensation, no odor, and the inherent fragrance of fresh milk. Pour the milk into the cup and shake it. The milk is easy to hang on the wall. Drop a drop of milk on the glass. After cooking, there is no condensation and floe. 2. Identification of Adulterated Milk Powder Identification: Hand-packing the packaging of powdered milk powder rubs back and forth. The texture of the real milk powder is delicate and it gives out a “squeak and squeak” sound. The fake milk powder, due to the addition of glucose, sugar and other coarser particles, emits "sand and sand" sound. Color identification: True milk powder is naturally milky yellow, fake milk color is whiter, crystals look fine, and shiny, or bleaching white. Odor identification: True milk powder has milk-specific aromas; and fake milk powder has little or no milk flavor. Taste identification: delicate stickiness, slow dissolution, no sugar sweetness. Fake milk powder dissolves quickly after entering the mouth, sticks to teeth, and has a sweet taste. Dissolving speed identification: When using cold boiling water, it needs to be stirred to dissolve into a milky white suspension; when hot water is used, there is a floating phenomenon of floating matter, and the stirring sticks up and stirs. When fake milk powder is flushed with cold boiling water, it will dissolve or precipitate without stirring; when it is rinsed with hot water, it dissolves rapidly and there is no aroma and color of natural milk. 3, the identification of yogurt color: milky white or slightly yellow, uniform color; poor quality yogurt milk inconsistent, slightly yellow or slightly yellow. Odor and taste: It has the unique fragrance of yoghurt, pure taste and smell, no alcoholic fermented taste, musty taste and other bad smells. Tissue status: The clot is uniform and delicate, without bubbles, allowing a small amount of whey to precipitate.