Effects of temperature and modified atmosphere packaging (MAP) on storage life of fresh cut lotus root
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Abstract
This research aimed to study the effects of temperature and modified atmosphere packaging (MAP) on storage life of fresh cut lotus root. The Fresh cut of lotus roots was sliced into 1 cm in thickness, placed on trays (150 g/tray) and packed in polypropylene bags after that filled with different carbon dioxide composition and different storage temperature, i.e. 28% CO2, 4±1°C storage and 28% CO2, 27±1°C storage. Other slices of sample were packed at non-modified atmospheres packaging as a control (0.6% CO2) and stored at same temperature (0.6% CO2, 4±1°C and 0.6% CO2, 27±1°C). At 15 days of storage, the physicochemical properties of fresh cut lotus root were analyzed. Storage fresh cut of lotus roots at 27±1°C (Control) was found that carbon dioxide concentration significantly increased (P≤0.05) whereas storage at low temperatures (4±1°C) the slowdown in the rise of CO2 was observed. Modified atmosphere packaging (MAP) with storage in low temperature was showed a slight change in CO2 (28-31%) over a 9 days period, whereas CO2 increased to 40% at the end of storage with 15 days. The lightness, hardness, moisture content and pH value of treatments were decreased when the level of redness and yellowness were increased in all test conditions. Low temperatures storage (4±1°C) combined with modified atmosphere packaging (MAP) of fresh cut lotus root retarded with a change in physical and chemical properties.
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