Summer is here, people often buy it in order to keep food fresh, and put it in the refrigerator right away. Do you know that the refrigerator is not “universal fresh box”, some food is put into the refrigerator, but will be in advance “aging”.
In general, the lowest temperature of the two-door refrigerator is the freezer compartment, which is minus 18 ° C. The temperature in the drawer below the refrigerator compartment is the highest, 7 ° C, and the temperature of the refrigerator compartment is 1 ° C – 7 ° C. between. Regarding the preservation of summer food, Professor Sun Ying, vice chairman of the China Food Science and Technology Society and expert on food safety, made the following recommendations.
Put it in the refrigerator for a day: cabbage, spinach, celery, carrots, peaches, grapes, apples, etc. are suitable for storage at 0 °C. However, when these fruits and vegetables have just been bought, it is best not to put them in the refrigerator immediately, because the low temperature will inhibit the enzyme activity of fruits and vegetables, so that the residual poison can not be decomposed. Therefore, the above fruits and vegetables are best stored at room temperature for one day before being placed in the refrigerator.
in the refrigerator should not go far: more water content of fruits and vegetables or tropical fruits, such as tomatoes, cucumber, bell pepper, litchi, best kept in a drawer in the refrigerator, but should not go far . Due to the high water content, these fruits and vegetables will appear black, soft and taste after being refrigerated for a long time.
Stored at room temperature: The suitable storage temperature for bananas, lemons, pumpkins, etc. is 13 °C – 15 °C. It is easy to make it black and rot at low temperature. Ham should not be refrigerated because it will cause the fat to precipitate, causing the ham to cake or loose. After the chocolate is refrigerated, the surface is prone to hoarfrost and loses its original flavor. Pasta such as bread should not be stored in the refrigerator, otherwise the linear part of the amylopectin will be slowly associated, and gradually become harder, and the phenomenon will change.
For the most common summer fruit watermelon, Professor Sun Ying said that many people are used to eating watermelon cut after cold storage. In fact, after the watermelon is refrigerated for a long time, a film is formed on the surface of the melon, which loses its taste. The water is also likely to form ice crystals, which may cause irritation to the throat or cause toothache. In addition, iced watermelon can also damage the spleen and stomach, leading to indigestion, loss of appetite and other diseases. Therefore, it is best to buy watermelon now. If it is warmer when you buy it, you may want to raise the temperature of the refrigerator and refrigerate it. The refrigerating time is best within two hours.