What are the commonly used food fungicides?

Commonly used food preservatives and fungicides.

Preservatives: refers to substances that cannot kill microorganisms, but can inhibit the growth activities of microorganisms and the growth of tissues;

Fungicide: A substance that kills microorganisms.

Commonly used preservatives are:

1) Benzoic acid and its sodium salt: benzoic acid has a strong antibacterial effect when it is not ionized, and the most suitable pH is suitable for acidic food. Sodium benzoate has good water solubility and can be converted into benzoic acid in acidic foods. Benzoic acid mainly inhibits yeast and bacteria and has little effect on mold.

2) Sorbic acid and its salts: the main term inhibits the growth of mold and yeast, and the antibacterial effect of sorbic acid is enhanced with the decrease of pH, generally <, and the antibacterial effect is good when it is not ionized.

3) Calcium propionate and sodium propionate: propionate has a narrow antibacterial spectrum, mainly acting on molds, with limited effect on bacteria and no effect on yeast, so propionic acid is often used as an antibacterial agent for bread fermentation and cheese manufacturing. Calcium propionate inhibits mold better than sodium propionate at the same dose, but it will affect the bulkiness of bread, and sodium salt is actually commonly used.

The smaller the propionate pH, the better the antibacterial effect, and the pH is generally <. Fungicides: Commonly used fungicides are:

Bleaching powder, sodium hypochlorite, H2O2, K2MnO4, epoxy compounds, commonly used in the disinfection of drinking water, packaging containers and processing utensils.

<> inorganic masking agents: such as sulfur powder, stone sulfur mixture, copper sulfate, etc. Organosulfur custs and antifungicides:

Such as dysen ammonium, sodium dirust, fumei coarse zinc, etc. Organophosphorus and arsenic fungicides: such as rice blast net, gram blast powder, ethyl phosphorus aluminum, etc.

Azole fungicides: such as powder, carbendazim, etc. Antimicrobial fungicides:

Such as well-gangmycin, polyantimycin, etc. Compound fungicides: such as dicarb and double effect.

Other fungicides: such as methametha, sclerotia.

1. Ammonium desen.

Ammonium dyssen is an organosulfur preparation. The pure product is colorless crystals and soluble in water. The industrial product is a light yellow liquid, neutral or weakly alkaline, with a rotten egg smell.

The chemical properties are relatively stable, but it is easy to decompose after a high temperature of more than 40. The prevention and control of diseases mainly plays a protective role, because the liquid medicine can penetrate into the epidermis of plants, and it also has the best effect. Low toxicity to humans and animals.

The main dosage form is % ammonium dyssen in water.

2. Pythium.

Pythium is a new type of fungicide, which is a low-toxicity fungicide. It mainly inhibits the synthesis of triglycerides in bacteria, which has the dual effects of protection and **.

3. Grammedan.

It can be used for foliar spray to prevent and control a variety of high and low fungal diseases, potato and peanut seed dressing, and can also be used for soil treatment (flushing, root irrigation, soil sprinkling, etc.) to prevent and control a variety of crop root diseases.

4. Sterilization pill.

A protective fungicide that prevents a wide range of crop diseases. In agriculture, it is used to control potato late blight, apple summer blight, melon bitter rot disease and early blight in livestock breeding. It is not harmful to plants, (but it has slight pesticide damage when applied to pear trees), and can promote growth and fruiting.

It can be mixed with acaricides and pesticides.

5. Tefulin.

Teflin is a sterol demethylation inhibitor, which is a systemic fungicide with protective and leading effects developed and created by Caoda Co., Ltd. in Japan. It has good quick-acting and durability, strong penetration, and low concentration. Under the normal use of technical conditions, it has little pollution to crops and the environment, and can play a good role in the early use of diseases or the spread of diseases.