Researchers have discovered that canned or frozen fruits and vegetables can be a healthy and economical alternative to fresh produce.
This comes at a time when the cost of living crisis is pushing many to seek cheaper and more sustainable food options.
Despite the common belief that fresh produce is always the best choice, research indicates that frozen and canned fruits and vegetables retain most of their nutritional value and may, in some cases, match or even surpass their fresh counterparts.
Dietary guidelines for adults recommend consuming at least two servings of fruit and five servings of vegetables daily, whether fresh, frozen, or canned. For example, half a cup of frozen broccoli or canned beans counts as one serving of vegetables, while a cup of canned peaches or frozen mango counts as one serving of fruit.
Frozen and canned products are characterized by their lower cost compared to fresh products, as well as their readiness for use and ease of storage for long periods, which reduces food waste and ensures its availability throughout the year.
Nutritionally, most frozen and canned fruits and vegetables retain their essential nutrients. Studies indicate that their nutritional value can be comparable to that of fresh produce that has been refrigerated for a week. In some cases, preservation may even increase the levels of certain nutrients, as is the case with frozen apricots, which contain a higher percentage of vitamin C than fresh apricots.
Freezing relies on low temperatures that slow food spoilage and preserve its color, texture, and nutritional value. However, repeatedly thawing and refreezing frozen products can affect their quality and nutritional value.
It should also be noted that frozen fruits and vegetables may be susceptible to contamination with Listeria monocytogenes bacteria, but cooking them thoroughly before eating reduces this risk.
In contrast, the canning process relies on sterilizing food at high temperatures, allowing it to be stored for extended periods at room temperature. While heat may lead to some loss of certain vitamins, particularly water-soluble ones like vitamin C, modern canning techniques have helped minimize this loss and improve product quality.
When buying canned products, experts recommend choosing low-sodium varieties or those labeled "no added salt," and rinsing canned vegetables before eating them to help reduce the amount of salt consumed.
It is also preferable to choose canned fruits preserved in their natural juice or those that carry the phrase "without added sugar", rather than products preserved in sweetened syrup.
These products offer convenient everyday options; canned fruits can be enjoyed with yogurt or cereal, while frozen vegetables can be added to quick meals, soups, and stews. Canned legumes, such as chickpeas, lentils, and beans, are also a practical way to increase fiber and protein intake without requiring extensive preparation time.
Dried legumes, such as lentils, chickpeas and beans, remain an excellent food choice and are often longer-lasting and of higher nutritional value, but they require more time to prepare and cook.
Regarding dried fruits, it is not recommended to rely on them as a daily substitute for fresh, frozen, or canned fruits, because the drying process increases the concentration of sugar in them, although they are suitable as a snack when consumed in moderation.
