Development of Special Modified Atmosphere Packaging of Fresh-cut Spinach and Coriander

In order to meet the needs for packaging of fresh-cut spinach and coriander,this paper adopted the combination of the packaging bags with the modified atmosphere(MA)windows of different permeability and different areas to conduct the tests,and developed the optimum modified atmosphere packaging(MAP)bags of fresh-cut spinach and coriander. The results showed that the suitable modified atmosphere window for fresh-cut spinach and coriander were as follows:the transmittance rates of O₂ and CO₂ were 4×10⁵ and 1.6×10⁶ cm³/m²·d·atm respectively,and the area of fresh-cut spinach and coriander all needed was 5~7.5 cm²/kg. Compared the permeability of modified atmosphere window and film,the permeability amount of O₂ and CO₂ in packaging bags suitable for fresh-cut spinach and coriander should be 3.17×10³~3.74×10³ and 1.42×10⁴~1.65×10⁴ cm³/kg·d·atm,respectively,which could solve the problem of odor and maintain shelf quality for more than 6 days. When the gases in the bags were stabled,O₂ and CO₂ of fresh-cut spinach were 7.34%~8.30% and 5.31%~5.49% respectively,and of fresh-cut coriander were 3.96%~7.16% and 4.89%~6.52% respectively. The MAP bag not only could make fresh-cut spinach and coriander in appropriate gas state,but also could solve the odor problem which caused by anaerobic breathing,and retain the original smell of fresh-cut products,prolong their shelf life,so as to provide strong technical support for fresh-cut enterprises.