How to preserve food from mold 5

How to preserve food1Dehydration: Bacteria and other microorganisms need water to grow, so dehydrating food can stop the growth of microorganisms and preserve the food for a long time.

Dehydrate food by exposing it to sunlight or air-drying it under natural conditions, such as dried shrimp, dried fish, dried vegetables. 2.Freeze-drying method:

The food is rapidly cooled during this process and then removed from it at low pressure. As the food is no longer water-free, freeze-dried food is very light. The essence of the food in freeze-dried food has not changed, so it retains a high nutritional value.

4.Osmopreservation: Many foods can be preserved by salting or cannishing, which apply the principle of osmotic pressure to allow the moisture in the food to penetrate out.

1) Fish, meat, poultry, eggs and all kinds of fruits, vegetables, can be salted and preserved. (2) The candied method uses high-concentration syrup as a high-permeability solution to inhibit the reproduction of microorganisms. 5.

Pickling: This method involves first salting food, such as vegetables, and then placing it in a glass with vinegar. Vinegar is a weak acid that causes bacteria to stop growing.

In order to maintain the nutrients in the food and avoid food spoilage or insect and rodent damage, food should be stored properly.

1) Preserve grain Grain should be kept in a cool, ventilated and dry place, and the container should be moisture-proof, mildew-proof, rodent-proof, and insect-proof. If the grain is damp, it should be dried in time.

2) Preservation of edible oil Edible oil mainly includes animal oil such as lard and vegetable oil such as sesame oil, vegetable oil, soybean oil, and peanut oil. Edible oil will deteriorate if it is not stored properly, and it is commonly known as "Hara" in the north. The oil of hala cannot be eaten.

In order to prevent rancidity, cooking oil should be placed in a clean glass bottle in a ventilated, dry, clean and hygienic place; It cannot be stored in plastic bottles for a long time. Don't store too much cooking oil at once, you should squeeze it as you eat it or buy it as you eat. Cooking oil cannot be used repeatedly, and the oil should be used as much as you pour each time.

Repeated use of oil can produce a lot of harmful substances, some of which are very toxic and can even cause cancer.

3) Preserve other foods When preserving food, pay attention to separating raw and cooked food, put cooked food on top and raw food on the bottom to prevent cross-contamination. Cooked food should be placed in a cool, ventilated, dry place that can be protected from flies, insects and rodents. When using the refrigerator to preserve food, keep the refrigerator refrigeration temperature below 10 o C, preferably around 4 o C.

If this temperature is exceeded, you should check if there is something wrong with the refrigerator. Fish, meat and other perishable foods should be refrigerated or frozen in time, and the temperature of frozen storage should be -18 o C.

The best way is to seal and sterilize and put it in a dry and low temperature place, and the general food can be put in the refrigerator.

Some need to be salted, some need to be dried, some need to be sealed, and some need to be placed in a cold room.

It depends on what kind of food, if it's dry, you make a bag, seal it and put it in the refrigerator.

It's easy to put in the fridge!

1. Expired milk. The milk in the refrigerator is the easiest to forget, because there is a lot of milk in it, some can only be kept fresh for more than 20 days, and it may have expired for a period of time when it is found, if the expiration time is relatively long, even if the milk in it has no peculiar smell, it is not recommended that you drink it, you can put it on the balcony to dry, and wait until the smell is emitted, and pour it into the flower pot as fertilizer for flowers.

2. Moldy grain. Moldy corn and soybeans and other grains must not be eaten, because these grains are particularly easy to produce aflatoxins after mold, this toxin can cause cancer, is a first-class carcinogen, such food should not be eaten by yourself, and do not give it to pets, you can soak it in water until it rots and then put it in a flower pot, but it is best to throw it away directly.

Moldy Food Hazards:

The problem of poisoning from moldy food deserves attention. Nausea, vomiting, loss of appetite, fever, abdominal pain and other manifestations after eating moldy food or food contaminated with mycotoxins can be cured in more than 1 2 days. However, eating food contaminated with aflatoxin, after 2 to 3 weeks, liver enlargement, liver pain, jaundice, ascites, edema of the lower limbs and abnormal liver function, there may be heart enlargement, pulmonary edema, and even spasms, coma, etc., and most patients may have gastrointestinal hemorrhage before death.

There are two ways to do this.

First, after wiping off the mold on the surface of the meat, pasteurization is used to sterilize;

The second is to spray 75% alcohol on the meat.

Boiling cannot remove all the mold in moldy food, and aflatoxin in moldy food is an insoluble substance, and the high temperature that can be achieved in daily cooking cannot harm it. When we encounter moldy food, we should directly discard the whole food, because the food already contains a lot of bacteria in it. If there is no moldy food, it should be heated, sterilized and boiled.

Cooking can not kill the bacteria in the moldy food.

Boiling cannot completely remove the bacteria in the moldy food, and the aflatoxin in the moldy food is a non-water-soluble substance, and the high temperature that can be achieved by daily cooking cannot cause harm to it. Therefore, you should never eat moldy food in your life.

If you find that there is mold in some areas of the food, you should also choose to discard the food directly, instead of digging the moldy area, leaving some of it to eat, because the mold and bacteria will continue to spread in the food, even if there is no vector in these areas, it has been infected.

When we usually store food, we should try to keep them in a dry and cool place at home, because in a warm and humid environment, bacteria are very easy to breed, which makes the food we make more likely to mold and spoil.

For example, when preserving some food, we can choose to wrap it in plastic wrap, which can first prevent more bacteria in the air from entering the food and speed up its spoilage, and then put the food in the refrigerator to slow down the growth of bacteria in the food.

Mold in food can be killed by high temperature, you can put the food that breeds mold at 100 degrees Celsius, and last about 5 minutes to kill the mold, or you can also put the food under ultraviolet light for sterilization, but the sterilization time is longer.

Molds, like other fungi, have cell walls and live in parasitic or saprophytic ways. However, some molds can turn food into toxic substances, and some may also produce toxins in food, that is, mycotoxins, so even if high temperature can kill mold, it cannot remove toxins from food, so do not use food infected with mold.

Moreover, since the discovery of aflatoxins, the contamination of food by molds and mycotoxins has become increasingly important. It causes great harm to human health, mainly manifested as chronic poisoning, carcinogenic, teratogenic and mutagenic.

Method 1: High temperature kills. Leave the food that is growing mold in an environment of 100 degrees Celsius for about five minutes to kill the mold.

Method 2: Ultraviolet killing. It is possible to sterilize the food with mold in the orange mold under ultraviolet light, but this method has a long sterilization time.

Mold is a type of fungus that is characterized by a well-developed mycelium and no larger fruiting body. Like other fungi, they also have cell walls and live in parasitic or saprophytic mode.

Some molds can turn food into toxic substances, while others may produce toxins in food, known as mycotoxins. Since the discovery of aflatoxins, mould has attracted increasing attention.

Mold is a general term for fungi that form branched hyphae and belong to various subphylum of the phylum Fungi in terms of classification. The basic unit that makes up the mold body is called hyphae, which are long tubular and two to ten microns wide.

Mold is a common microorganism that can easily thrive in moist, warm environments. In order to prevent mold growth, we can take the following measures:

1.Keep it ventilated: Mold prefers a humid environment, so it's important to keep your room ventilated. Open windows to let fresh air into the room and try to avoid moisture entrapment.

2.Controlling Humidity Land Disturbance: Maintaining proper humidity can help prevent mold growth. The use of a dehumidifier or air conditioning system can effectively reduce the humidity in the air. In addition, it is necessary to clean and replace the air conditioner filter regularly.

3.Prevent water leaks: Fixing water leaks in a timely manner is key to preventing mold growth. Check whether there is any leakage in the water pipes, faucets, water tanks, etc., and repair them in time.

4.Warm room: Mold grows slower at lower temperatures, so keep the room temperature at the same time.