HUMAN NUTRITION

Detailed explanation-1: -Sanitation is a change in food caused by enzymes or by microorganisms. Microorganisms are tiny living things that may be poisonous or that may cause changes in food. Careful handling of food helps to prevent bacteria from multiplying. Bacteria must have food, moisture, and the right temperature in order to grow.

Detailed explanation-2: -Most people would not choose to eat spoiled food. However, if they did, they probably would not get sick. Bcrirwridlyinh"Danger Zone"-the temperatures between 40 and 140 °F. Pathogenic bacteria cause illness and do not generally affect the taste, smell, or appearance of food.

Detailed explanation-3: -Sanitation is the creation and maintenance of conditions that will prevent food contamination or food born illness and lower levels of disease-causing microorganisms to a safe level. Cleaning is removing surface food or dirt for example from a surface area.

Detailed explanation-4: -Refrigeration preserves food by slowing down the growth and reproduction of microorganisms as well as the action of enzymes which cause food to rot. Freezing food slows down decomposition by turning residual moisture into ice, inhibiting the growth of most bacterial species.