Classification and mechanism of action of fungicides
Different agents have different sterilization mechanisms, which can achieve the effect of sterilization, avoid re-pollution of water quality, fully maintain water quality, and bring benefits to enterprises. Below is a general overview of the classification and role of fungicides.
Non-oxidizing bactericides act on a particular part of microorganisms by the method of toxins, and then damage the cells or living parts of microorganisms to achieve the purpose of sterilization.
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Bromine-containing species: dibromocyanopropionamide, etc., when added to water, bromine atoms are released immediately, and bromine atoms are used to attack sulfur-containing amino acids of electrophilic substances to inactivate amino acid proteins. This type of fungicide kills bacteria especially quickly and is effective against bacteria, mold, yeast and algae. Our K-Bio DB20 is a formula product developed based on this active substance. The product has good stability and is well received by customers in different industries.
Chlorophenols: such as dichlorophenol, pentachlorophenol; sterilization mechanism: chlorophenol compounds can be adsorbed on the cell wall of microorganisms, and then dispersed into the cell structure, generating a colloidal solution in the cell, depositing proteins, and then damaging the proteins kill bacteria.
Quaternary ammonium salts: Quaternary ammonium salts are cationic surfactants, because their hydrophobic groups contain water-soluble groups, which improve the dispersibility of quaternary ammonium salts in water, increase surface activity, and strengthen the bactericide in bacteria. Adsorption hinders bacterial respiration and glycolysis. Quaternary ammonium salts can also denature proteins, allowing chlorine and phosphorus compounds to leak out of cells and cause cell death.
Quaternary phosphonium salts: mainly rely on the active part on the heterocycle, such as N, H, O and the bases of DNA in the bacterial protein to form oxygen bonds, which are adsorbed on the cells, and then damage the structure of the DNA in the cells and cause the DNA to lose its ability to reproduce. , and then cause the cell to die.
Heterocyclic compounds: organic sulfur compounds, organic amine compounds: mainly rely on the active moiety on the heterocyclic ring, such as N, H, O and the bases of DNA in bacterial proteins to form oxygen bonds, adsorb on cells, and then damage cells The structure of the inner DNA causes the DNA to lose its ability to reproduce, which in turn causes the cell to die.
Organic aldehydes: such as glutaraldehyde, the concentration of the finished product is 50% or 25%: the aldehyde group plays the role of sterilization, the oxygen on the aldehyde group is negatively charged, and the carbon is positively charged. The positively charged carbon reacts with the amino groups NH: and sulfur groups SH: of the bacterial protein, and then damages the bacterial protein, resulting in the death of the bacteria.
