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Modified atmosphere packaging has broad prospects for development. This experiment in order to study the effect of modified atmosphere packaging on the preservation effect of fresh-cut lettuce, lettuce after cleaning, disinfection, dehydration, cutting a series of machining process, with different packaging materials and the proportion of different gases to modified atmosphere packaging, refrigerated at 4 °C, the respiration, intensity microorganism, weightlessness rate, vitamin C, chlorophyll, and conductivity of the lettuce were determined in the bag every two day, screened the best material and the best ratio of gas for lettuce; the results showed that the suitable packaging materials and gas ratio of O2 and CO2 were beneficial to extend the shelf life of fresh-cut lettuce, maintained the appropriate respiration intensity, effectively inhibited the growth of microorganisms and reduced VC, chlorophyll, and other nutrient loss. Lettuce in the storage process is to maintain the quality of test results. Test obtained the best packaging materials and the best gas proportion of fresh-cut lettuce, namely best packaging materials for PE composite nylon, inflatable proportion for 3 % O2 + 10 % CO2, this combination can keep the quality good of fresh-cut lettuce in the process of storage, the preservation period of lettuce extended from 4–5 days to 14 days.
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- The Research on Modified Atmosphere Packaging Preservation of Fresh-Cut Iceberg Lettuce
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