placed in low oxygen permeable (b1 cm3/m2/24 h at
STP) polystyrene/ethyl vinyl alcohol/polyethylene trays and using
modified atmosphere packaging (MAP) technology, was flushed
with 80% O2:20% CO2 using a vacuum-sealing unit (VS 100, Gustav
Müller and Co. KG, Bad Homburg, Germany) equipped with a gas
mixer (Witt-Gasetechnik GmbH and Co. KG, Witten, Germany).
Trays were covered and heat-sealed using a low oxygen permeable
(3 cm3/m2/24 h at STP) laminated barrier film with a polyolefin
heat-sealable layer.