The advantages of food processing and preservation using traditional methods
Answers
Question:
How do you appreciate the process of different preservation methods used to preserve food?
Answer:
What is Preservation?
The process of reducing food spoilage by using preventive measures is called food preservation.
What does food spoilage mean ?
- Food spoilage means the change in color, flavor, taste, texture and nutritional value of a food and gets spoiled due to factors such as microbes ,temperature etc.
- Spoilage is the process in which food degrades so much that the food gets spoiled and cannot be eaten by the human beings.
Refrigeration: The microorganisms do not survive in low temperature areas. So some food such as vegetables ,eggs and fruits are preserved in low temperature areas such as refrigerators so that the germs or microorganisms cannot affect spoil them .
Drying: Microorganisms such as mold, yeasts and bacteria require enough moisture to survive on food materials .So the food items such as beans, peas, vegetables, pasta, and rice are dried or dehydrated to remove moisture from them and the mold ,yeasts or bacteria do not affect them.
Canning: It is a process in which the air is removed from the food and air tight cans are used such that there will be no space for the microbes to enter and since they the air is removed from the food there will be less chances for the microbes to grow on it.
Adding sugar and salt : The microbes cannot live in excessive salty environment so we can add salt to the food to preserve it for long periods of time.
When concentrated sugar solution is added to food materials water is removed out from the cells of the food so that the microbes do not survive due to the lack of water from the food materials
Advantages and Disadvantages of Food Preservation :
Advantages of food preservation:
1)Microbes are controlled from spoiling and affecting the food items, this helps us to get save food.
2)Through the use of chemical preservatives there will be no loss of nutrients.
3)Radiation extends the life of strawberries and mushrooms.
4)Refrigeration slows the multiplication of micro organisms.
5)These methods help us in reducing the wastage of food
Disadvantages of food preservation:
1) In the process of preservation we use salt and sugar, and excessive use of salts and sugars effects the health and causes health problems.
2)In the process of refrigeration there are loss of nutrients from time to time.
3)In the process of canning water-soluble nutrients can be lost into liquid in can.
4)We also use chemical preservatives for storing the food but there some people who are sensitive to some chemical preservatives.
5)In high heating processes such as pasteurization there is loss of heat-sensitive nutrients.
Answer:
Food preservation is the method that reduces food spoilage by using preventive measures to protect the food from microorganisms.
Explanation:
Through food preservation, we can reduce the wastage of food as the microbes are controlled from spoiling, affecting the food items which save our float from getting contaminated and saves from microbes. By freezing or refrigerating the food it slows very slow the multiplication of microorganisms. There is also an advantage of food preservation is that the use of chemical preservatives will not allow any loss of nutrients from the food.
Food spoilage includes the change of flavor, taste, or smell, and the nutritive value of food, which is destroyed due to temperature and microbes. There are, many methods of food preservation that is refrigeration, drawing, canning, and adding chemical preservatives like salt oil.
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