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奶粉係粉末狀嘅固體奶製品,由動物奶脫水、整乾而成,食之前用水開返成溶液就可以。奶為液體,多水,無咁易保存,奶粉就容易得多。脫水奶製品體積同重量都細好多,方便運輸,唔使雪藏,放嚮陰涼處就可以。
奶粉有好多隻營養成份,分別設計畀後生仔女、老人家、細路同蘇蝦仔。
現今製法,首先啲奶,以巴斯德消毒法,殺死細菌。之後揮發一半水份,變成濃縮一倍嘅奶固體。奶固體撒入熱爐,水份即時揮發晒,淨低奶粉。
經過熱力,奶嘅性質會有所改變,就算溶喺水,同原本嘅奶都唔同。
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