Add to favorite
Subscribe to our Newsletters Subscribe to our Newsletters Get Daily Updates RSS

Is Your Milk Safe to Drink?
October 14, 2010 22:21

Russian biologists have developed testing systems for quick measuring antibiotic concentration in various milk products. New testing systems, based upon immuno-assay technologies, are highly sensitive and specific.

Antibiotics have become an integral part of modern livestock farming. These chemical substances are used for preventing and treatment of various infectious and parasitic diseases, for growth stimulation and etc, and that is why antibiotics can be found in almost all products of animal origin, including meat ant milk.

When antibiotics enter human organism, they may be the cause of many health disorders, like so-called dysbacteriosis (imbalance of proper microbial fauna of an organism) or allergies. Presence of antibiotics in milk can be a serious problem for production of various cultured dairy products. Antibiotics, when used without a serious reason, can promote formation of drug-resistance in microorganisms. Many countries of the world, including Russia, have special regulations for antibiotic concentration in food products, thus content of these substances in food should be under stiff control.

Institute of Vaccines and Serums suggest measuring antibiotic concentration in milk by means of immuno-assay technology. The technique is based upon an immunological response of a tested substance and an antibody, specific to this substance Moreover, the technique can not only say whether tested substance is present in milk or not, it can also measure its concentration. Scientists synthesized specific antibodies to various antibiotics and developed testing systems for following eight antimicrobial agents: laevomycetin, cortin, bacitracin, enrofloxacin, ciprofloxacin, gentamicin, neomycin, and kanamycin.



Testing systems, described above, were used for testing 106 samples of milk and cream of both domestic and foreign origin and fat content between 0.1% up to 35%. Tests revealed that fat content had no effect on analysis results, and that is why no specific sample preparation is required for this analysis. Moreover, antibiotic concentration can be measured both in raw (unpasteurized) milk and in boiled milk.

New testing systems appeared to be very useful, because a large number of milk samples has shown positive reaction on antibiotics, and concentration of these chemical substances was often above permissible level.

An antibiotic, most often detected in milk and cream, is called tetracycline, and every fourth sample of milk and cream contained impermissible concentration of this antibiotic. Some samples contained a combination of various antibiotic agents, and researchers worry that in this case their cumulative effect would be negative, even if concentrations of separate antibiotics do stay within permissible limits.

Russian scientists believe that they have created a convenient technique for testing quality of milk products. Immuno-assay technologies proved to be effective, sensitive and able to detect individual antibiotic agents in the presence or absence of other antimicrobial products.

      Science News

Kizilova Anna

Tags: Russian Scientists     

Next Previous

You might also find interesting:

Transgenic Plants Grow in Moscow Region Protozoa Help Fight Mosquitoes Miniature Wireless Computer By Intelligent Electronics Fruit Pits and Nut Shells Help Purify Air New Neutron Detector has been Created

Comment on our site

RSS   twitter      submit

Russian Realism  LDPR  Russian science  Sochi Olympics tickets  train tickets Russia FIFA  Exhibitions in Moscow  firefighting  Nizhny Novgorod Region  Nevelsk  Unusual Constructions  Alexander Vasilyev  Mercedes-Benz Fashion Week Russia  Khabarovsk  Russian oil  Russian scientists  Baikal  Russian painters  Novosibirsk  Painting  Statesmen  Mikhail Kornienko  Yuri Stepanov  Russian exhibitions  Naryan-Mar   Musical  Russian economy  Black Sea  Online Exhibitions  Mercedes-Benz Fashion Week   Gazprom  fitness in Moscow  Russian tourism  St. Petersburg  Incidents  Karelia   Raiffeisenbank  Russian Cinema  skating rinks  Moscow  Roman Abramovich  active holidays in Russia  Moscow Parking  Russian business  Andrey Zvyagintsev  North Caucasus  contemporary art  Visa to Germany  history  odd news  Taisia Korotkova 

Travel Blogs
Top Traveling Sites