Brown burgers can leave bugs in the pink

时间:2019-03-06 09:11:01166网络整理admin

DON’T believe people who tell you beefburgers are safe to eat once they’ve gone brown. To cook beef safely, you should heat it to 70 °C—hot enough to kill potentially lethal Escherichia coli O157. But Morse Solomon and his colleagues at the US Department of Agriculture near Washington DC, have shown that beef can brown at temperatures as low as 57 °C if it has been frozen, exposed to air for a while or kept in an acidic environment. These conditions alter myoglobin, the protein which gives raw meat its colour,