Since ancient times humans have used many ways to keep food as long as possible, such as drying, pickling, and cooling. These methods help the food to be found throughout the year, benefiting from its availability and cheap prices in its season. The carrots are important vegetables in cooking which can be kept in a freezing way. The islands retain their nutritional properties, but they can lose some vitamins, and whenever the temperature is appropriate and not subject to changes, the food preserves its quality and its nutrients. The scientific basis for freezing food is to prevent the growth and reproduction of bacteria in food, reduce the reactions that occur to food, reduce the loss of water from the food, and kill refrigerate some parasites that lead to food corruption.
Milling method of carrots
- Clean the carrots and cut as desired.
- Boil water, the carrots are placed section in the water for three minutes.
- Cool the carrots with cold water to keep it color.
- Clear the islands of water.
- Put the carrots in bags, empty them out of the air, and close them tightly.
- Place the carrot bags in the freezer at 10 ° C.
Advantages of cryopreservation method
- One of the oldest ways to save food, the ancients were putting snow around the food, or burying them in the snow.
- Maintains the nutrients and their properties, but can lose some vitamins especially that melt in water.
- Prevent growth and reproduction of germs in food.
- The food can be kept in a freezing manner for several months, depending on the efficiency of the frozen in maintaining a constant temperature.
- Provide time to prepare meals, and provide off-season vegetables.
- Keep the quality of the food, if the efficiency of the freezer is good.
- The food should be kept in a rapid freezing manner that preserves the food, and does not damage its tissues.
- When using frozen food, it is best to place it in the bottom of the refrigerator to melt the ice slowly, and can be dissolved using the microwave to maintain the nutritional value of the food.
- Small flat containers should be used to ensure the efficiency of freezing.
The disadvantages of using cryopreservation
- Changes occur on the essential components of the food, such as fats and proteins.
- Binary sugars can be decomposed into mono and lead to food staining, especially if temperatures are high.
- The food can lose its juice during the process of dissolving, and thus lose some vitamins and minerals.
- Temperature changes lead to food corruption and change their nutritional properties.
- Canned meat must be cooked in a way quickly to prevent its corruption.