Cut carrot was stored in: (1) bags containing modified air with different oxygen and carbon dioxide content; (2) in bags with different oxygen permeability. Oxygen and carbon dioxide was measured regularly during a storage period of 10 days. Results show that increasing initial oxygen from 5 to 60% delayed anoxia from 3 to 10 days. Only a combination of low initial oxygen (5%) and high permeability bags (1020-1250 cm(3)/(day.Bar.m(2))) could stabilise the oxygen concentration, and only at a low level (5-7% O-2) Respiration of cut carrot has a high dependency of oxygen concentration, as shown by applying a Michaelis-Menten model. In contrast, no dependency of CO2 was found.