Tap water is sealed and stored for a long time, what preservatives can be put to prevent mold?

Answer: Bamboo is easy to grow mold because there are nutrients such as sugar in bamboo, and it is not easy to grow mold without nutrients. You can extend the number and time of cooking, and changing the water a few times should solve the problem.

What preservatives are put in, or what is the sterilization process in the process of doing, please understand teachers and friends, the shelf life of directly vacuum-packed food without any treatment is only 7 days. After packing, it is then passed through 75°C steam 15

The weather is so hot now, like this situation, you'd better refrigerate it in time, otherwise too much preservatives will grow mold, not that if you put preservatives, you will definitely not grow mold.

Third, face up to preservatives and this kind of problem itself is not friendly to preservatives, when will there be no one who thinks that preservatives are poisons, this is different from the previous people who thought that ham sausages are made of rotten meat, jelly is full of glue, can be added to the food preservatives themselves meet food safety standards, and preservatives are an indispensable part of the food industry, so please do not look at preservatives with colored glasses.

It's not because of the addition of preservatives, but because after the moon cake is finished, the moisture on the surface of the moon cake is less than 3%, as if it is plasticized, and all kinds of bacteria cannot grow in this environment, so it will be maintained for 10 years.

It is because of preservatives, because this moon cake has been preservatively taken when it is stored, so the moon cake can be stored for ten years without hair growth and mold.

Not because of the preservative, but because of the vacuum packaging and the desiccant in the packaging, the vacuum and drying inhibit the growth of mold, so it has been left for 10 years without mold.

Moon cakes do not grow hair for ten years, do not mold, not because of the function of preservatives, the moisture content is the key factor that moon cakes are not bad, according to the survey, is that if the moisture on the surface of the moon cakes reaches less than 3%, the moon cakes will be like being wrapped with a layer of film and molded.

No. Because the water content of moon cakes is very small, and the packaging and storage environment of moon cakes has low humidity, the appearance of moon cakes has hardly changed.

It's the role of preservatives, preservatives really have some such effects, and they are a particularly powerful drug.

There are three main additives used in glutinous rice balls:

1. Natural edible colloids:

The emulsifier can play a certain emulsifying and stabilizing effect, reduce free water, ensure that the ice crystals are fine in the freezing process of the glutinous rice balls, and make the internal structure delicate, no holes, and the shape is intact.

2. Emulsifier:

As the amount of emulsifier is used, the emulsification effect is also better.

3. Thickener stabilizer:

The addition of thickeners and stabilizers can enhance the water absorption and water holding capacity of glutinous rice flour. The use of a variety of edible thickeners also has a synergistic thickening effect, which has the property of forming a gel, which can make the starch gel form a continuous three-dimensional gel network structure with certain viscoelasticity, and then reduce the dehydration and shortening effect of the glutinous rice balls to ensure that the glutinous rice balls do not collapse during the cooking process. The thickener makes the skin tighter and more delicate, reducing the appearance of cracking on the surface of the sample.

The viscosity of the quick-frozen glutinous rice ball improver is large, which can make the glutinous rice flour tightly structured, and the muddy soup can be significantly reduced when cooking and gelatinizing.

A small amount of salad oil can be added to the production of quick-frozen glutinous rice balls, and under the action of emulsifier, the product has a water-retaining effect, which can prevent long-term storage of quick-frozen glutinous rice balls and prevent water loss and cracking on the surface.

At present, many dried sweet potatoes are smoked with sulfur to prevent mold, but sulfur is harmful to the body after sulfur smoke. It is recommended that dried sweet potatoes be exposed to the sun before storage, and stored in a moisture-proof warehouse.

Apples are a nutritious food, rich in vitamin A, fiber, vitamin B and fructose. After eating, it can effectively replenish the body's nutrients, but after mold, the whole flesh around the apple heart will contain a large amount of aflatoxin. This aflatoxin itself is a strong carcinogen, and after eating, it will cause metabolic disorders in the body, which is not conducive to physical health.

It's not fresh if it smells musty. Nowadays, fruits are basically pesticides, and they will spoil from the inside out after a long time. As long as it's a little bad, don't eat it again.

That's formaldehyde, from the bags and cartons that come from the packaging. Harmful to the human body. There is no problem with the apple itself, it belongs to the packaging twice polluted, there is no way, there is a problem with what you eat now. You can only wash it a few more times and let it go for a while before eating.

There is also because after the apple is stored for a long time, it will release some ethanol (that is, alcohol) due to its own respiration, because the storage room is sealed and the temperature is relatively low, so the ethanol released by the apple cannot be dispersed, and it will ferment on the apple skin, producing an alcohol taste, and at the same time, in order to prevent the apple from damaging the quality of the apple due to fermentation, the merchant will sprinkle some absorbent things on the surface to keep the surface of the apple dry. In fact, these things can be washed or peeled before eating apples.

It is caused by prolonged contact with mold on the skin of the apple. If the wrapper of the apple is intact, the outer skin of the apple is left with black mildew, and the skin of the apple is intact after washing, and the skin color is fresh after peeling, but the musty smell of the black skin has invaded the apple. Recommendations:

If you see that the skin of the apple has some black mold, you should cut it off regardless of the color of the skin.

There used to be worms in it; Later, it was killed, but it left a hole. So it gets moldy.

It may be that the apples are sprinkling too many pesticides and applying too many chemical fertilizers in the process of growing.

There is mold to have a musty smell Don't buy it anymore There are too many fakes The Chinese are too good to fake.

Not mainly Chinese like to look good.

If it smells musty, it's moldy, throw it away.

The main function of preservatives is to inhibit the growth and reproduction of microorganisms, so as to prolong the storage time of food and inhibit the spoilage of substances.

The preservative principle of preservatives can be roughly divided into the following three types:

First, it interferes with the enzyme system of microorganisms, destroys their normal metabolism, and inhibits the activity of enzymes.

Second, it is to coagulate and denature the proteins of microorganisms, interfering with their survival and reproduction.

Third, it changes the permeability of the cell plasma membrane, inhibits the elimination of enzymes and metabolites in the body, and leads to its inactivation.

There are a lot of preservatives, and different preservatives can be used on different food products.

The two most common preservatives are potassium sorbate and sodium benzoate, which are the most commonly used.

Others like nitrite, sulfur dioxide, etc., have antiseptic effects.

It still depends on which products are available and which preservatives can be applied.

The selection of food additives needs to look at the standards for the use of food additives.