Izvestiya of Saratov University.
ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)


доксициклин

Oxidative degradation of tetracyclines

Environmental pollution is one of the most pressing problems facing humanity. The constant search for its solution is an important aspect of modern chemistry. The work studied the oxidative degradation of two antibiotics of the same pharmaceutical group, with a similar structure but diff erent properties.

Excitation energy transfer in europium complexes with doxycycline in the presence of surfactant micelles and silver nanoparticles

Doxycycline is a broad-spectrum tetracycline antibiotic used to treat infections in humans and in veterinary medicine as a prophylactic drug and growth stimulant. For this reason, residual amounts of antibiotics in milk, meat and other food products can cause resistance and the development of allergies. In this regard, constant monitoring of residual contents of tetracyclines in food products, environmental objects, and biological fl uids is required.

ОКИСЛИТЕЛЬНАЯ ДЕСТРУКЦИЯ ТЕТРАЦИКЛИНОВ

Загрязнение окружающей среды - одна из наиболее остро стоящих проблем перед человечеством. Постоянный поиск ее решения - важный аспект современной химии.
В работе изучалась окислительная деструкция двух антибиотиков одной фармацевтической группы, со сходным строением, но различными свойствами.

Electroanalytic properties of unmodified and polyaniline-modifi ed planar sensors sensitive to doxycycline

Doxycycline has a wide range of antimicrobial and anti-infl ammatory properties and is used to treat various infectious diseases. Spectroscopic, chromatographic, electrochemical, immunoassay and other methods are used to determine tetracycline antibiotics in various objects. Planar sensors allow express detection of antibiotics in small sample volumes. Planar potentiometric sensors based on ion associations doxycycline – tetraphenylborate (Copt = 2–3%), modifi er – polyaniline, for the quantitative determination of doxycycline have been developed.

ЭКСПРЕССНОЕ СОРБЦИОННО-ФЛУОРЕСЦЕНТНОЕ ОПРЕДЕЛЕНИЕ ДОКСИЦИКЛИНА В ЛЕКАРСТВЕННЫХ ПРЕПАРАТАХ

Изучено влияние сорбции доксициклина, энрофлоксацина и ок-
солиниевой кислоты на силикагеле и фильтровальной бумаге из
воды и водно-мицеллярных растворов ПАВ на флуоресцентные
свойства указанных антибиотиков. Разработанная экспрессная
методика флуоресцентного определения доксициклина в диапа-
зоне концентраций 2 ? 10-5 – 1 ? 10-3 М на Сорбфиле, модифи-
цированном мицеллами неионного ПАВ Бридж-35, апробирована
на лекарственном препарате «Доксициклин», величина Sr не пре-

Luminescent Properties of Doxycycline in the Presence of Silver Nanoparticles Modified by Ions of Europe

Fluorescence spectroscopy is a routine tool for studying cellular and molecular visualization, flow cytometry, medical diagnosis, forensic medical examination, genetic analysis, and also an analytical method. However, most available organic dyes used to produce an optical signal have a number of important limitations, such as hydrophobicity, low quantum yield, and low photostability.