Unit 1

Introduction to food supply of a sufficient amount of food, its preservation and storage, resulted in the emergence of cities and urban civilization. Today in our diet, traditional foods are being replaced by fast foods. Traditional foods are nutrient rich, does not contain any artificial colouring, flavours or preservatives. Whereas fast foods contain all these things.

In addition, food insecurity and nutrition insecurity are challenging public health in the present trend. Definition The term ‘food’ refers to what we eat and which nourishes the body. It includes solids, semi-solids and liquids. so, two important features for any item to be called food are:  It should be worth eating, that is, it should be ‘edible’.

 It must nourish the body.