With the rapid development of society, scientific research has also been vigorously promoted. Through research, it has been shown that certain microorganisms contain substances with antibacterial effects, commonly known as antibiotics, which have provided a lot of help in medicine. Below, Shanghai Qixin, a manufacturer of cephalosporin, will introduce the characteristics of antibiotics to you. The specific content is as follows:
1. Direct action on cell
Antibiotics can selectively act on specific links of bacterial cell DNA, RNA and protein synthesis system, interfere with cell metabolism, hinder life activities or stop growth, or even die, which is different from non selective ordinary disinfectants or bactericides. Its antibacterial activity mainly manifests in three phenomena: antibacterial, bactericidal, and bacteriolytic.
2. Selective antibiotic spectrum
The action of antibiotics is selective, and different antibiotics have different effects on different pathogens. The type of pathogen that is sensitive to a certain antibiotic is called the antibiotic spectrum (antimicrobial spectrum) of that antibiotic. This kind of antibiotics is called narrow spectrum antibiotic, for example, penicillin only inhibits gram-positive bacteria. It not only has effects on bacteria, but also has inhibitory effects on chlamydia, mycoplasma, rickettsiae, spirochetes and protozoa. Such antibiotics are called broad-spectrum antibiotic. For example, tetracyclines (aureomycin, oxytetracycline, etc.) have inhibitory effects on gram-positive and negative, rickettsiae, and some disease viruses and protozoa.
3. Effective concentration of action
Antibiotics are a physiologically active substance. Various antibiotics can generally act on pathogenic bacteria at very low concentrations, which is another major characteristic that distinguishes antibiotics from other chemical fungicides. The effective concentrations of various antibiotics vary for different microorganisms, and the antibacterial strength of antibiotics is usually determined by the extremely low concentration (MIC) that inhibits microbial growth, abbreviated as the effective concentration. The lower the effective concentration, the stronger the antibacterial effect. Antibiotics with an effective concentration above 100mg/L have lower action intensity, while antibiotics with an effective concentration below 1mg/L have higher action intensity.
4. Has selective toxicity
Antibiotics are less toxic to humans, animals, and plants than microorganisms, known as selective toxicity. It has a specific antagonism effect on sensitive microorganisms and has a strong effect. More than 10000 times diluent still has significant bacteriostatic and bactericidal effects.
The above is an introduction to the characteristics of antibiotics. This article is compiled and published by Shanghai Qixin, a manufacturer of cephalosporin and thiophene. If you want to learn more relevant information, please follow Shanghai Qixin New Material Technology Co., Ltd. We will be happy to serve you! Looking forward to working with you!
