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+86-13906994440

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12-04

2024

Does frozen food lose its nutrients?

What are frozen foods? Frozen foods, also known as quick-frozen foods, are foods produced by rapidly freezing at low temperatures. Frozen foods refer to raw materials that are appropriately processed and then quickly frozen within 15 minutes, allowing their temperature to rapidly pass through the range of -1°C to -5°C (also known as the maximum ice crystal formation zone) within 30 minutes. After freezing, the food crystallizes, and the storage and transportation temperature must also be below -18°C. In a super low-temperature environment, the food is quickly frozen, and the structure of tissues and cells does not change, while the activity of microorganisms, enzymes, etc., is temporarily suppressed. The food is then sealed and vacuum-packed (to prevent drying, oil loss, oxidation, etc.) and finally stored in an environment below -18°C for long-term preservation, lasting 300 to 600 days. Many people often confuse quick-freezing with freezing, but in fact, the two concepts are completely different. Do frozen foods lose their nutritional components? Meat stored at lower temperatures can better retain its nutritional components. In particular, the content of protein and minerals generally does not change. It can be said that compared to fresh meat, frozen meat does not have significant nutritional losses, aside from a decline in taste. Compared to fresh fruits and vegetables, frozen fruits and vegetables may have a slightly worse taste, but their nutritional value is not necessarily lower. This is because fruits and vegetables lose nutrients during the processes of harvesting, transportation, and storage, while frozen fruits and vegetables are quickly frozen at -18°C right after harvesting, which almost halts respiration and suppresses microbial activity, thus better preserving nutrients. Many vegetables are frozen for transportation and storage, and there are many types of vegetables suitable for quick freezing, including leafy vegetables, stem vegetables, root vegetables, and edible fungi. Before quick freezing, vegetables must undergo pre-treatment, which can include boiling, steaming, or microwaving. An experiment comparing the nutritional components of eggplants, green beans, garlic sprouts, and cabbage under quick-frozen and room temperature storage conditions found that in the early stages of storage, the vitamin C content of quick-frozen vegetables was lower than that of room temperature stored vegetables. However, as the storage days increased, the vitamin C content of room temperature stored vegetables rapidly decreased, quickly falling below that of quick-frozen vegetables. How to choose frozen foods First, choose frozen foods that have been stored at temperatures below -18°C. If the store does not have a freezer or if the freezer's temperature does not reach -18°C, the product quality cannot be guaranteed and should not be purchased. Select frozen foods that are closest to the production date. Pay attention to the production date; the closer the food is to the production date, the higher its freshness and the less nutrient loss it has. If frozen foods have not undergone thawing during production and transportation, there will be no water generated, and thus no frost or ice will appear. Only during repeated thawing will frost and ice form, which can also cause varying degrees of damage to the food's nutrients. Therefore, we should prioritize frost-free and ice-free frozen foods. Choose packaging that is undamaged, with intact frozen products that are not soft or stuck together, minimal frost inside the packaging, and products that have a natural color without discoloration or dullness.

12-04

2024

How to store frozen food

The amount of frozen food stored in the refrigerator can basically determine the happiness index of staying at home. However, frozen food has high temperature requirements, so it needs to be properly stored after buying it.~ After purchasing, quickly place it in the freezer to avoid melting due to heat during transport. If you don't plan to eat it immediately, hurry up and put it in the freezer as soon as you get home. Be sure to pay attention to the shelf life of the food; if it's too long, the quality will deteriorate.

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A professional company that mainly imports and exports all kinds of aquatic products and deals in freezing and processing of all kinds of aquatic products (Indonesian hairtail, squid, mackerel, red fish, basa fish, cuttlefish, shrimp and other kinds of seafood, as well as all kinds of grilled fish series and prefabricated dishes series).

Hotline:

+86-13906994440

Company E-mail:

longfarseafood@hotmail.com

Company Address:

Room 701, Building A6, Baoyuan Garden, 333 Bayi Road, shishi city

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