Introduction  
  What is food?  
  What happens to the food we eat?  
Our nutrient needs  
  Energy balance  
  Nutritional status  
  Laws & labels  
  Additives & colours  
  Toxicity in food  
  Processing food
  Stability of food nutrients  
  Storage life of foods  
  Food- associated health problems  

- FIGURE 31 -
HOW TO MINIMIZE NUTRIENT WATER INPUT AND OUTPUT

  1. Choose fresh foods that are not over-ripe, bruised, cut or scraped.

  2. Store foods in a cool, dark place.

  3. Unless the peel or outer layer is unpalatable, damaged or contaminated, cook the food whole.

  4. If it is necessary to slice the raw food. then try to keep the pieces as large as possible.

  5. When boiling, add the raw food to the boiling water rather than to cold water.

  6. Use the smallest amount of water possible; it is not necessary to cover the food. Steaming is a way of cooking with a minimum amount of water.

  7. If possible use the cooking water for gravies, sauces or soups as it is a source of water-soluble vitamins and elements (minerals).

  8. Cook for the minimum time necessary to make the food palatable and safe. Once cooked, eat as soon as possible. Do not keep the food warm for long periods.

  9. Do not use baking soda to help keep the green colour of vegetables, as this increases loss of vitamin C.

  10. Do not use copper utensils. (Copper helps to destroy vitamin C.)

Food Facts
- Processing can affect food nutrient content
- Use of fertilizers
- Milling
- Controlled atm. storage
- Cutting, triming, etc
- Blanching
- Cooking
- Freezing
- Dehydration
- Canning
- Pasteurization
- Toasting
- Sprouting
Figures:
31:How to minimize nutrient losses during cooking
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