Surprising nutritional advantage of frozen blueberries
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Many health-conscious consumers regularly include blueberries in their diets because of their rich antioxidant content. But when shopping, they often face a choice: fresh or frozen? Growing interest in frozen blueberries stems from claims that they may retain certain nutrients better than fresh fruit.
Experts caution that frozen blueberries should not automatically be considered healthier than fresh ones. However, depending on harvesting, transportation and storage conditions, some nutrients may remain more stable in frozen products.
Blueberries are rich in antioxidants such as anthocyanins, compounds associated with a variety of health benefits. One challenge with fresh blueberries is that some vitamins and antioxidant compounds can gradually decline during transportation and storage.
Frozen blueberries, by contrast, are often flash-frozen shortly after harvest, helping to minimize nutrient loss. Some studies have found that frozen fruits and vegetables can retain vitamin C and antioxidant levels better than fresh produce that has undergone extended transportation and storage.
This may be particularly relevant for blueberries, which have thin skins and can deteriorate relatively quickly. That said, freshly harvested blueberries remain an exceptionally nutritious food.
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Another reason frozen blueberries are attracting attention is the possibility of improved nutrient absorption. During the freezing and thawing process, some of the fruit's cell walls break down, potentially making compounds such as anthocyanins more accessible to the body.
This is one reason frozen blueberries are popular in smoothies, yogurt bowls and other blended foods. They are also valued for their convenience, as they can be stored for extended periods and enjoyed year-round with relatively consistent quality.
However, not all frozen blueberry products are equally healthy. Some contain added syrups or sweeteners, making it important for consumers to check ingredient labels and look for unsweetened varieties whenever possible.
This article from Kormedi.com, Korea’s top health care and medical portal, is translated by a generative AI system and edited by The Korea Times.