Preliminary research on the method for reducing irradiation off-odor from refrigerated raw pork

In order to develop a method of reducing irradiation off-odor from chilled pork, the individual and associated effect of modified atmosphere packaging (MAP) treatment and film packaging with adsorbent treatment on reducing off-odor were investigated, further more adsorbent sort, content and adsorbing course of off-odor were assessed. The results showed that both 60% O2 30% CO2 10% N2 combination MAP and film packaging with adsorbent(0.01 g ZnCl2/ ZnO every 50 g meat) were the effective methods of reducing off-odor from pork meat which were irradiated by 2.8 kGy and stored at 0～4℃. The two treatments had synergistic effect. The pork had no perceivable off-odor which was pretreated by MAP combined with adsorbent and then irradiated under 4.2 kGy.