Frozen foods generally fall into two broad categories. 1. Chilled food: no need to freeze, it is the food that the temperature of the food is lowered to close to the freezing point and preserved at this temperature; 2. Frozen food: the food that is frozen and preserved at a temperature lower than the freezing point. Among them, it can be divided into five categories according to raw materials and consumption forms, aquatic products, meat, poultry and eggs, rice and flour products, and prepared convenience foods, which are also the categories that people are most exposed to.
According to the British "Daily Mail" report, the latest research shows that frozen vegetables have higher nutritional value than fresh vegetables. Why do you say that? Scientists at the Centre for Food Reform Research at Sheffield Hallam University in the UK say we need to abandon the stereotype that frozen vegetables are of poor quality. Many fruits and vegetables can be refrigerated immediately after harvest without much loss of vitamins and minerals, and many so-called vegetables on the market have been stored in warehouses for many days. For example, green beans stored for 7 days reduced vitamin C by 77%. Studies have also shown that frozen green beans contain higher beta-carotene levels after they have been cooked in both frozen and fresh green beans. Researcher Charlotte Harty said: "We looked at 37 products and found that there was no significant nutritional difference between fresh and frozen food, while fresh vegetables took too long to travel from the farm to the average family's table. time."
FRESH FOOD
At present, fresh food is more representative of the "three fresh products", namely: fruits and vegetables, meat, aquatic products, basically only necessary fresh-keeping and simple finishing can be put on the shelves for such products, without cooking In addition to the more common ones: bread and cooked food derived from Western-style fresh products, on-site processing categories such as bread and cooked food are classified as the [three fresh products" of primary products. "It is combined with the bread and cooked food of processed products as the "Five Fresh Products".
Fresh products are an area that has not been completely conquered by e-commerce. The reason is that the investment in cold chain logistics is huge, it is difficult to standardize fresh products, and the upstream supply chain is not easy to stabilize. At present, the service level of the domestic cold chain logistics industry is not high, and the corrosion rate of transported goods is relatively high, and the development of the entire industry is still in its infancy. In 2015, the refrigerated transportation rates of fruits and vegetables, meat, and aquatic products in my country were only about 30%, 50%, and 65%, respectively, and the spoilage rates were 15%, 8%, and 10%, respectively. The high spoilage rate leads to a lot of substandard fresh products flowing into the market. After research, people generally know that fresh food is nutritious, but this understanding is not comprehensive. In a short period of time, fresh food is rich in nutrients, but with the passage of time, nutrients will also be lost. This is different from frozen food. Although frozen food cannot completely seal the nutritional content of food, in terms of "days", the nutritional content is far greater than that of fresh food.
