The reaction mixture contained 0.5 ml of beer and 0.05 ml of FeCl2 (2 mmol/l). After 5 min, the reaction was initiated by the addition of 5 mmol/l ferrozine (0.1 ml), and the total volume was adjusted to 3 ml with deionised water
The reaction mixture contained 0.5 ml of beer and 0.05 ml of FeCl2 (2 mmol/l). After 5 min, thereaction was initiated by the addition of 5 mmol/l ferrozine (0.1 ml), and the total volume was adjusted to 3 ml with deionised water