Answer:
The freezing process prevents bacteria in food from developing. According to the American Ministry of Agriculture, any frozen food is safe to use as bacteria and other pathogens cannot develop if the surrounding temperature is minus 17.78 degrees Celsius and lower.
The freezing process prevents bacteria in food from developing. Photo illustration by Freepik |
However, frozen food can still lose its quality and original texture, as well as be prone to ice burn when being frozen for too long, if water leaks from the food. Hence, freezing food is best consumed within eight to 12 months.
Prior to freezing, fresh vegetables and fruits should be cleaned with cold water and then wiped off using a tissue. Some types of vegetables and fruits should be peeled as well.
The food should then be put in zip lock bags or boxes, with as much air being taken out as possible before being put in the freezer.
Poaching the vegetables before freezing also helps better preserve the flavor, colors, and nutrition.
Nutrition Pham Hong Ngoc
Vietnam Institute of Applied Medicine