September 2, 2008


Chr Hansen launches dairy antibiotic test


Denmark-based Chr Hansen is offering a new test for tetracycline residues in milk that can help dairies ensure they are under EU limits.


Tetracycline is an antibiotic used to treat mastitis. EU rules require residue levels to be under 100 parts per billion in milk as high levels may lead to antibiotic resistance allergy and hypersensitivity in humans


Cows are likely to be infected more frequently due to higher demands placed on them, thus requiring more antibiotics.


The company said under normal circumstances, a cow receiving antibiotic treatment would be quarantined for four or five days. The antibiotics are highly likely to pass into the milk if the cows are not kept in quarantine for long enough.


Chr Hansen said there is a growing need for quick and simple dip-stick tests to ensure that milk meets the required standards.


Its new offering. TetraStar, would deliver results in six minutes - and determine not only whether the milk meets residue limits but also check that any tetracycline that is there will not interfere with production cultures, making them useful for yoghurt production.


The level at which residues affect cultures varies depending on the cultures. But even if a culture has a high minimum inhibitory level, production could still be slowed down if lower levels of residues are present.


Chr Hansen has previously marketed another test for antibiotics in milk, called BetaStar. That test detects residues from the beta-lactam group of dairy antibiotics.


Chr Hansen is one of the world's top 15 supplier of food ingredients.