That being said, some research also suggests that frozen produce may retain its antioxidant activity despite the loss of water-soluble vitamins ( 6 , 7 ). Bottom Line: Blanching results in a loss of antioxidants, B-vitamins and vitamin C. However, nutrient levels remain fairly stable after freezing. 15 июн. 2017 г.
Does freezing vegetables destroy vitamin C?
Blanching caused a decrease in vitamin C and folic acid, whereas freezing affected vitamin C and carotene. Frozen produce may also lose nutrients the longer they are frozen. They should be used within 8 months to 1 year of purchase.
Is vitamin C destroyed when frozen?
Vitamin content The vitamin which is most sensitive to temperature change is vitamin C. It is a well-known fact that during flash freezing (-30°С or -22°F) vitamin C loses its properties by 15-20%.
Do vegetables lose vitamins when frozen?
Eat them soon after purchase: over many months, nutrients in frozen vegetables do inevitably degrade. Finally, steam or microwave rather than boil your produce to minimize the loss of water-soluble vitamins.
Does food lose vitamins when frozen?
Generally, frozen foods retain their vitamins and minerals and there is no change to the carbohydrate, protein or fat content. In some cases, frozen foods have more vitamins and minerals compared to fresh because fresh foods lose vitamins and minerals over time while freezing preserves nutrients.
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