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Leaf lettuce (Lactuca sativa L., var. crispa) packed in 20 μm LDPE (perforated),´20 μm LDPE, 30μm HDPE, and 40 μm LDPE pouches was stored at 4 ℃ , 10 ℃ and 20 ℃ . The quality of leaf lettuce during the storage was investigated in terms of weight loss, color, soluble solids content, texture and sensory properties. Leaf lettuce exhibited the highest storage stability at 4℃ . Shelf-life of the packed leaf lettuce was prolonged approximately 10∼15 times in comparision with that of the unpacked under all temperature conditions. Among the packed leaf lettuce, self-life in 20 gm LDPE (perforated) and 20 μm LDPE pouches was relatively short mainly due to discoloration and deterioration. On the other hand, the quality of the leaf lettuce packed in 30 μm HDPE and 40 μm LDPE pouches was kept well during the storage. Particularly, 40 μm LDPE pouches conferred the shelf-life superior to other film pouches.
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