2.1. Vegrtahle salad
Mixed vegetable salad was composed of lettuce (75%), carrot (15”/0) and red cabbage (lo”/;,). Veg- etables were sorted, cleaned and rinsed in potable water with 100 mg/l active chlorine at 2°C then centrifuged (1000 rpm for 2 min) and mixed in the above ratio. After weighing, they were wrapped in 290 x 155 mm polypropylene film (CO, and O2 transmission rates of 142 cm’/m2/24 h/atm and 44 cm3/m2/24 h/atm, respectively) without gas injec- tion, and stored at 4°C.