Nutrient groups and their functions:
We should know that our body is made up of different chemical substances which are related to the food we take. Scientists have determined the chemical substances present in different foods and their role in the body. They call these substances "nutrients" and have classified them in different groups. In order to get an idea about the nutrients of food, let us examine a familiar dish of peas and potato curry prepared in our homes. For preparing it, besides oil or ghee, onions, tomatoes and some spices are used. What these ingredients provide in terms of nutrients are listed below:
This dish is given as an example in order to illustrate how all the classes of nutrients required by our body can be included in our meal. These six classes of nutrients, namely, carbohydrates, proteins, fats, vitamins, minerals and water, must be included in our meals in correct proportion. This need can be fulfilled from a single dish or from a combination of dishes, prepared from a wide variety of food sources. If one of the ingredients of this recipe is deleted, we lose the corresponding nutrient. This is how we evaluate every food - preparation. You know that fd habits vary from place to place all over India. Chapatis are the staple food in many parts of north India and rice is the staple food in south and east India. People in other countries also have their preferences in food. These habits are mostly due to the availability of a particular tyfe of food stuff. Anyway, no particular food is absolutely necessary, because many alternatives to it can provide the same nutrients. Here, we must note that no single item of food contains exactly the same nutrients as any other singIe item.