3 results about "Chlortetracycline" patented technology

This invention discloses a dual-emission molecularly imprinted ratiometric fluorescence sensor, its preparation method, and its application in the detection of chlortetracycline, belonging to the field of chemical sensor technology. The preparation method of this sensor includes the following steps: preparing silica-quantum dot composite nanoparticles; preparing a molecularly imprinted polymer using salicylamide as a template molecule; and using a post-mixing strategy to mix the molecularly imprinted polymer and silica-quantum dot composite nanoparticles in HEPES buffer to construct the dual-emission molecularly imprinted ratiometric fluorescence sensor. The advantages of this invention are: the dual-emission molecularly imprinted ratiometric fluorescence sensor provided by this invention exhibits rich fluorescence color changes, enabling rapid, highly sensitive, and visual detection of chlortetracycline; and the entire detection process is simple, convenient, and fast, making it suitable for widespread application in practical applications.

The invention belongs to the technical field of feed additives, and particularly relates to a preparation method of sheep Zhuang powder, which comprises the following specific steps: preparing an astragalus extract, preparing berberine hydrochloride, and mixing for preparation. In the preparation process of the sheep strengthening powder, the feed additive is added, the feed additive effectively replaces the previous aureomycin, the antibacterial effect (MIC) of the feed additive on escherichia coli AZ1, escherichia coli 8-1 and salmonella sk77 is obviously better than that of the aureomycin, the dosage every time is smaller, animals are healthier, both pathogenic bacteria are killed, the immunity is improved, and the sheep strengthening powder is suitable for being used for preparing sheep strengthening powder. The feed is safe and compliant, has no residue and no withdrawal period, and has the effects of fattening and weight gaining and fierce eating and fierce growth.

This invention discloses a hindered Lewis acid-base pair type copper pyrovanadate catalyst, its preparation method, and its application. The preparation method of the catalyst includes the following steps: adding a metavanadate solution to a copper salt solution under stirring conditions, continuing stirring after complete addition to ensure sufficient reaction, then transferring the resulting mixture to a reaction vessel for hydrothermal reaction, and after the reaction is completed, centrifuging to separate the solid, washing, and drying to obtain the hindered Lewis acid-base pair type copper pyrovanadate catalyst. This catalyst can promote singlet oxygen (… 1 The generation of O2 can be used to activate oxidants such as persulfate (PMS) to degrade organic pollutants in water. These organic pollutants include antibiotics, specifically at least one of tetracycline (TC), oxytetracycline (OTC), chlortetracycline (CTC), doxycycline (DOX), and their derivatives. The preparation method of this invention is simple, can be mass-produced, and is inexpensive, thus possessing broad application prospects.