不同包装材料对羊肉贮藏期的影响

Experiment Reports of Prolonging Storage Time of Vacuumized Mutton

用低透氧率的塑料薄膜和铝箔复合膜真空包装羊肉，在０℃±１℃条件下贮藏，４０ｄ后，各包装袋内的羊肉均未发生异常变化。６０ｄ后，用塑料薄膜袋包装的羊肉有１０％发生变化。９０ｄ后，则有８０％包装袋内的羊肉变质腐败。而用铝箔复合膜包装的羊肉，冷藏９０ｄ后，均未发现异常变化。用铝箔复合膜袋包装羊肉，再配合微波杀菌等保鲜技术。

Mutton vaccum packed with ploymeric alfoil film and low oxygen penetrated plastic film were kept at 0℃±1℃. Abnormal changes happened in all packed mutton after 42 days. 10% mutton packed with plastic film changed after 60 days. 80% mutton packed with plastic film deterioted after 90 days. While mutton packed with ploymeric alfoil film didn't change a litter under refrigeration for 90 days. So it can improve storage time for mutton significantly by packing them with ploymeric alfoil film.