Canning and packaging
Filling packaging with CO2 or other gases preserves all manner of foods, including fruit and bread, by preventing certain bacteria from growing
Stunning animals for slaughter
Stunning is a key use of CO2. The gas has an anaesthetic effect but at high concentrations it can also stop the brain from functioning, causing death
Carbonation
Added to fizzy drinks and some beers, CO2 gives sparkle, affects flavour and helps preserve the drink, preventing the growth of bacteria and fungi. It is also used to dispense drinks from kegs
Decaffeinating coffee
‘Supercritical carbon dioxide’ – a form of CO2 with the properties of a liquid and a gas – is passed through the coffee to dissolve the caffeine, leaving other substances intact
Canning and packaging
Filling packaging with CO2 or other gases preserves all manner of foods, including fruit and bread, by preventing certain bacteria from growing
Carbonation
Added to fizzy drinks and some beers, CO2 gives sparkle, affects flavour and helps preserve the drink, preventing the growth of bacteria and fungi. It is also used to dispense drinks from kegs
Stunning animals for slaughter
Stunning is a key use of CO2. The gas has an anaesthetic effect but at high concentrations it can also stop the brain from functioning, causing death
Decaffeinating coffee
‘Supercritical carbon dioxide’ – a form of CO2 with the properties of a liquid and a gas – is passed through the coffee to dissolve the caffeine, leaving other substances intact