If we keep things in the refrigerator, the taste of some foods will change, the nutritional value will be reduced, and even the deterioration of food will be accelerated. Some foods are better in the greenhouse than in the cold storage. Let's see what food we have.

1. Tomatoes: The texture and taste of tomatoes will change after cold storage. If the temperature is too low, the tomato meat will be soft and rotten, or there will be scattered black spots, and the umami will disappear. After a long time, it will rot.

2. Red wine: The storage temperature of red wine should be kept constant at about 12 to avoid cold and hot changes; The working principle of refrigerator is intermittent, and repeated temperature changes have great damage to the quality of red wine.

3. Potatoes: Potatoes will become harder and taste worse if they are refrigerated. Frozen potatoes will taste like sand, and no matter how they are cooked, they are not delicious.

4. Onions: Onions are stored in the refrigerator for too long, which is easy to lose moisture, leading to mildew and stickiness. In addition, the smell of onions will invade other foods in the refrigerator.

5. Coffee: Coffee powder and coffee beans can't be put in the refrigerator. The reason is that refrigerated coffee easily absorbs the smell of other foods in the refrigerator. In addition, the sudden drop in temperature will lead to dehydration of coffee and its aroma will be greatly reduced.

6. Garlic: The lower the refrigerator temperature, the easier it is to cause garlic to germinate, deteriorate or mold, and the texture will become as soft as rubber.

7. Honey: If we put honey in the refrigerator, the sugar in honey will crystallize faster, and the honey will become thicker or even unable to go out.

8. Chili sauce: Most Chili sauces can be kept in the food cabinet for three years.

9. Bread: Bread is easy to dry, harden and slag after cold storage, and its nutrition and taste are not as good as normal temperature.

Second, how long can the food in the refrigerator be kept?

Many people regard the refrigerator as a "food sterilizer" at home and think that the food stored in the refrigerator is hygienic. In fact, the refrigerator will breed a lot of bacteria because it stores food for a long time and is not cleaned often. Although the food in the refrigerator looks fresh, it has actually gone bad. Cooked meat should not be stored in the refrigerator for more than 4 days. The common cold storage temperature of food in the refrigerator is 4℃ to 8℃. In this environment, the growth rate of most bacteria will slow down. But some bacteria are psychrophilic, such as Yersinia, Listeria, etc., which can grow and reproduce rapidly at this temperature. If you eat food infected with this kind of bacteria, it will cause intestinal diseases. The temperature in the freezer of the refrigerator is generally around-18℃. At this temperature, bacteria are generally inhibited or killed, so the food stored in it has better fresh-keeping effect. But freezing does not mean that it can be completely sterilized, and some bacteria with strong freezing resistance will survive. Therefore, from another perspective, if the refrigerator is not disinfected frequently, it will become a "hotbed" for some bacteria.

In addition, don't store too much food in the refrigerator, which will make the external temperature of food low and the internal temperature high, leading to deterioration.

The weather is getting hotter every day, and the utilization rate of refrigerators is also high.

But some housewives will use the refrigerator as a fresh-keeping box to store food for a long time. How to use the refrigerator correctly is also an indispensable family knowledge for housewives. For the health of your family, you must know how long the food in the refrigerator can be kept.

Fresh eggs: refrigerated for 30~60 days, cooked eggs: refrigerated for 6~7 days, milk: refrigerated for 5~6 days, yogurt: refrigerated for 7~ 10 days, fish: refrigerated for 1~2 days, refrigerated for 90~ 180 days, and beef: refrigerated/. Frozen for 360 days, canned: unopened for 360 days, peanut butter and sesame paste: canned for 90 days, coffee: canned 14 days, apple: 7- 12 days, citrus: 7 days, pear: 1-2 days, and cooked tomato: 65440 days.

No leftovers for 3 days, no fruits and vegetables for a week at most, and no sauce for two months.

Many people think that once food is put in the refrigerator, it is equivalent to putting on "protective clothing". In fact, the nutrition and umami taste of food will slowly fade during storage. There is a knack for keeping food fresh.

Third, do 8 common senses to spend the summer healthily.

Have some iced coffee.

Strong sunlight in summer will directly damage your skin, so drinking iced coffee properly will not only feel super cool, but also the caffeine in it can protect you from ultraviolet rays, thus greatly reducing the risk of DNA damage and skin cancer. Dr. David Groto, an American nutrition expert, suggested that it is best to add a small piece of dark chocolate to coffee, which can enhance the vascular function 129%.

Eat beef moderately.

People who like meat are happier. If they eat 2-3 ounces of beef every day, they can also provide omega-3 fatty acids beneficial to heart and brain health and zinc, a mineral that strengthens bones. But if you eat barbecue, it is best to roast the meat in the microwave oven until it is half cooked, and then roast it with charcoal fire, which can reduce carcinogens.

Happy to drink sparkling wine

Many fruity sparkling wines on the market not only taste good and are suitable for drinking in summer, but also are brewed with red wine and fruit juice. Red wine contains resveratrol, and fruit juice is rich in antioxidants, which can promote cardiovascular health.

Watch a lively movie

According to statistics, laughing often helps to reduce the level of some harmful stress hormone cortisol in the blood. Relevant research results show that some movies that can make people laugh constantly can relax and expand blood vessels in as short as 15 minutes, thus preventing the occurrence of heart disease.

Doze off at noon

Churchill, Kennedy and Einstein all like taking a nap. Frequent siesta can not only enhance memory and learning ability, but also reduce the death rate of heart disease by 34%.

Go shopping if you have nothing to do.

Shopping is a good aerobic exercise, which can not only exercise leg strength, but also help burn calories. American studies have found that walking for three hours a week can make brain cells more active.

Have a regular sex life

People who have frequent sexual life not only have better sleep, less pain and stronger immunity, but also have lower blood pressure than those who have less sexual life, and their risk of heart disease is reduced by half.

Old people learn to dance.

Learning to dance once in a while is very helpful for strengthening human physique, increasing communication and interaction between people, and it is also a self-challenge to people's psychology. The latest research in Canada found that learning to tango can help the elderly improve their cognitive ability.

Fourth, summer health porridge

Mung Bean Congee

The most obvious effect of mung bean porridge is that it can relieve summer heat and detoxify, and clear away heat and trouble. People who are unbearable in summer heat or easily get angry can often drink mung bean porridge. Mung beans are rich in nutrients, and have the functions of stimulating appetite, reducing blood fat, cholesterol, antiallergic, detoxicating and protecting liver. Mung beans are cold, people with physical deficiency and cold should not eat more or for a long time, and people with spleen and stomach deficiency and cold diarrhea should eat carefully.

Purple rice porridge

Purple rice has the effect of benefiting qi and enriching blood, and is suitable for female physical weakness, malnutrition, anemia and other diseases. Purple rice also has many dietotherapy functions, such as nourishing yin and tonifying kidney, improving eyesight and enriching blood. It is more suitable for pregnant women, the elderly and children, and can effectively supplement nutrition.

Millet gruel

In northern China, many women will use millet and brown sugar to recuperate their bodies after giving birth. Because of the high iron content of millet, it has a great effect of nourishing yin and enriching blood after delivery, which can regulate the deficiency and cold constitution of parturient and help them recover their physical strength. Millet is sweet and salty, and has the effects of cleaning, quenching thirst, invigorating stomach, removing dampness and calming stomach. It is more suitable for people with internal heat and weak spleen and stomach. Some people have a bad appetite. After eating millet, it can stimulate appetite, nourish stomach, strengthen stomach, promote digestion and prevent nausea and vomiting. Because millet is rich in B vitamins, it also has the function of preventing indigestion and oral ulcer.

rice gruel

Japonica rice can replenish spleen and qi, nourish stomach and produce fluid. People with weak constitution and poor spleen and stomach should always drink japonica rice porridge. Protein, fat and vitamins in japonica rice are relatively high. Eating more can lower cholesterol and reduce the chances of heart disease and stroke. Japonica rice can prevent diabetes, beriberi, senile plaque, constipation and other diseases. Japonica rice is suitable for all women with weak constitution, persistent high fever, early recovery from a long illness, postpartum women, the elderly and infants with weakened digestive function. But diabetics should not eat more.

Coix seed porridge

Coix seed porridge has the effects of detumescence, invigorating spleen and removing dampness, relaxing muscles and tendons and removing arthralgia, and cleaning and discharging pus. Coix seed porridge can nourish hair, prevent hair loss and make hair smooth and soft. Drinking barley porridge regularly can make the skin smooth, reduce wrinkles and eliminate pigmentation spots. It has obvious curative effect on facial acne and rough skin. Cooking glutinous rice into porridge is more conducive to the absorption of the stomach. People who often feel tired and have no strength can eat more.

Red bean porridge

Red beans have the functions of strengthening the spleen and regulating the stomach, clearing away heat and toxic materials, inducing diuresis to reduce swelling and promoting lactation. Suitable for edema, lower limb dampness, dysuria, thin stool, obesity, postpartum hypogalactia, etc.

rolled oats

Oats are rich in B vitamins and zinc, which can regulate the metabolism of sugar and fat. Oats are also rich in pectin, which can effectively reduce cholesterol in the human body. Therefore, drinking oatmeal regularly can achieve the effect of losing weight and prevent diseases such as hypertension and hyperlipidemia. Oats contain minerals such as calcium, phosphorus, iron and zinc, and have the functions of preventing osteoporosis, promoting wound healing and preventing anemia. They are good calcium supplements, especially suitable for middle-aged and elderly people.