In addition, winter jujube also contains vitamin A, vitamin E, potassium, iron, copper and other trace elements, which have anti-cancer effect, and its nutritional value is the highest among all fruits.
Winter jujube contains a special enzyme, which can protect vitamin C from being destroyed. Even if it becomes a dried jujube, the vitamin C in it is still very high. Even if there are no fresh winter dates in the market, you can still eat dried dates.
Extended data:
Winter jujube is easy to be damaged by microorganisms or machinery because of its high respiratory intensity and high water content.
If it is stored in natural conditions after harvesting, it will only have a crisp period of about one week, which will bring difficulties to transportation and sales. Therefore, before you taste the winter jujube, it may undergo a series of preservation treatments, such as low temperature, modified atmosphere, decompression and other physical methods, as well as other biochemical techniques to delay the maturity of the winter jujube and maintain the fruit quality.
For example, by controlling the temperature, humidity, gas concentration and other conditions in the storage environment, modified atmosphere method can inhibit the respiration of winter jujube, delay its metabolic process and better maintain its freshness. Specifically, it needs low temperature, moisture retention, low oxygen and other conditions, and it also needs to remove ethylene, because ethylene has the function of ripening fruits.
Of course, the short-term preservation of winter jujube in the family only needs to be put into a fresh-keeping bag, excluding air tightness, and stored in the refrigerator at constant temperature.
In addition to dried dates and fresh dates, there is also a kind of candied dates, which are processed from dried dates. But compared with the first two, its nutritional value is much less. Candied fruit, for example, is to cook dried dates in high-concentration sugar water, which greatly increases the sugar content and reduces the proportion of other nutrients. It's only an occasional snack.
CCTV: Supplementing vitamin C in winter is better than eating kiwifruit in winter.
CCTV: It's nice to eat more fruits and vegetables with red dates and carrots.