Fresh seasonal produce is rich in valuable nutrients, but sometimes freezing can actually enhance their benefits for our bodies. Moreover, these products are often cheaper than fresh ones without compromising their nutritional value. Let's explore which vegetables and fruits are better consumed after freezing and why.
Broccoli
Broccoli is an excellent source of vitamins and fiber. A 100g serving of this vegetable provides 100% of the daily requirement for vitamin C, 80% for vitamin K1, and almost 20% for vitamin B9. Broccoli also contains nine essential amino acids. Vitamin C in broccoli quickly degrades when exposed to air, so storing fresh broccoli in the refrigerator for more than five days is not recommended. Frozen broccoli retains its vitamin C, and in terms of beta-carotene content (a precursor to vitamin A), frozen florets surpass fresh ones by nearly twice.
Spinach
Spinach, known for its low calorie content (23 kcal per 100g) and high fiber content, remains a favorite among healthy eaters. A 100g serving of spinach contains half the daily requirement for vitamins A and B9, over 30% for vitamin C, and three times the daily requirement for vitamin K. After a week of storage in the refrigerator, spinach loses over 70% of its vitamins, whereas freezing helps preserve them for a long time while also reducing the bitterness of the leaves.
Peas
Peas and green beans are rich in beneficial plant protein, contain little harmful fats and fast-digesting sugars, and provide fiber, B vitamins, and trace elements. For instance, 100g of green beans contains almost 10% of the daily requirement for manganese and a third of the recommended daily intake of vitamin K. Frozen peas and green beans retain more vitamins A and K than fresh ones, which begin to lose these nutrients after just five days of refrigeration.
Berries
Strawberries, raspberries, blackberries, bilberries, currants, blueberries, cherries, and sea buckthorn retain the maximum amount of beneficial nutrients, especially vitamin C, when frozen at their peak freshness. Freezing enhances the sweetness of the berries and reduces their tartness. It's important that the berries remain firm and uncrushed, with no ice crystals or snow on the packaging, as this can indicate repeated freezing and loss of nutrients.
Vitamins and Bioactive Substances in Fruits, Vegetables, and Greens
- Vitamin C: Supports immunity.
- Vitamin A: Important for vision.
- Vitamin K1: Ensures normal blood clotting; its deficiency increases the risk of bleeding.
- B Vitamins: Support energy and activity, positively affecting the cardiovascular and nervous systems.
- Manganese: Participates in enzyme production in the body.
- Bioactive Substances (anthocyanins, polyphenols, and others): Protect against free radicals, premature aging, and cell death.
Freezing vegetables and fruits is an effective way to preserve their nutritional value and extend their shelf life, making them accessible and beneficial year-round.