Food-poisoning bugs including salmonella might not be killed off when meat is no longer pink

Are you cooking chicken safely? Food-poisoning bugs including salmonella might not be entirely killed off when the meat is no longer pink, new research suggests

  • Norwegian research shows chicken can change colour before bacteria is killed
  • Young people were found to be most likely to test meat by looking at the surface 
  • Dr Solveig Langsrud encourages people to use a thermometer when cooking 

The way chicken is commonly cooked could be exposing families to nasty food-poisoning bugs, research has found.

Most of us cook it until the meat is no longer pink or until the juices run clear and are no longer bloody.

But scientists found that chicken can change colour at relatively low temperatures before dangerous bacteria such as salmonella and campylobacter are killed off.

The researchers urged families to check that all surfaces of the meat are cooked as that is where most bacteria are present.

Norwegian research shows chicken can change colour at low temperatures before bacteria, such as salmonella and campylobacter, are killed exposing families to food poisoning bugs 

Home cooks should also check the centre of the chicken to ensure that the core meat is fibrous and not glossy.

Norwegian researchers looked at how consumers cook chicken in the UK, France, Norway, Portugal and Romania.

They found that the colour of the meat changes at 60C (140F), which is not hot enough to kill food poisoning bacteria.

Even when chicken fillets were cooked so the centre of the meat reached a temperature of 70C (158F) – sufficient to kill most bacteria – bugs survived on the surface of the meat that was not touching the pan.

Young people, particularly men aged between 16 and 30, were most likely to judge chicken as cooked by looking at the surface, not checking its juices or temperature (stock image)

Young people, particularly men aged between 16 and 30, were most likely to judge chicken as cooked by looking at the surface, not checking its juices or temperature (stock image)

Study author Dr Solveig Langsrud, from the Norwegian Institute of Food, Fisheries and Aquaculture, said: ‘Consumers are advised to use a thermometer or check that the juices run clear to make sure that the chicken is cooked safely. 

‘We were surprised to find that these recommendations are not safe and not based on scientific evidence.’

Study author Dr Solveig Langsrud, from the Norwegian Institute of Food, Fisheries and Aquaculture, encourages people to use a thermometer when cooking chicken

Study author Dr Solveig Langsrud, from the Norwegian Institute of Food, Fisheries and Aquaculture, encourages people to use a thermometer when cooking chicken

Young people – particularly men aged between 16 and 30 – were most likely to judge chicken as cooked by looking at the surface rather than checking its juices or temperature.

The researchers surveyed 4,000 households. 

They found that many consumers prioritised the ‘juiciness of chicken’ rather than safety concerns.

The team, whose findings were published in the journal PLOS One, suggest that updated recommendations on cooking chicken should be issued.

They recommend focusing on the colour and texture of the thickest part of the meat, as well as ensuring that all surfaces reach sufficient temperatures, for example by searing the skin of the chicken before roasting.

The UK’s Food Standards Agency advises that chicken should be cooked until it has reached 70C (158F) for at least two minutes, that the juices run clear and the meat is not pink.