食品既是人们赖以生活的物质基础,又是营养学的物质基础,所以谈营养是不能离开食品的.食物对人体发育与健康的作用必须在进入人体后才能发生,所以食物配成膳食除要求有足够的营养素外,还要具备能引起人们食欲的色、味、香、形以及吃后能很好地被消化和利用等条件.目前各国膳食的营养供给量标准,是依据现有的 Food is not only the material basis of people’s lives, but also the material basis of nutrition, so nutrition can not leave the food.The role of food on human development and health must be entered into the human body to occur, so the food dubbed dietary requirements There are enough nutrients, but also have to cause people’s appetite, color, taste, smell and shape, and after eating can be well digested and utilized conditions such as the current dietary nutrient supply standards in various countries, is based on the existing