新鲜果蔬气调包装保鲜原理 新鲜果蔬用透气性塑料薄膜包装密封后，果蔬的呼吸活动消耗包装内空气中的O2并产生差不多等量的CO2，逐渐构成包装内与大气环境之间的气体浓度差。空气中的O2通过塑料薄膜渗透入包装补充消耗的O2，包装内的CO2则渗透出塑料薄膜扩散到空气中，开始时，包装薄膜内外的气体浓度差小，渗入包装内的O2不足以抵消消耗的，渗出的CO2小于产生的CO2。随着贮藏过程中包装内外气体浓度差增加，气体渗透的速度加快。当包装内O2消耗速度等于O2渗入速度，而CO2产生的速度等于渗出的速度时，包装内可能达到一个低02和低C02气调平衡浓度。如果包装内的气体平衡浓度使果蔬仅产生微弱的需氧呼吸而没有厌

Modified atmosphere packaging machines are typically two to three times larger than other forms of packaging, resulting in higher logistics and storage costs. However, if a mixture of nitrogen, oxygen and carbon dioxide is used to replace the air and stored at the correct temperature, it can reduce

Meat, as food, enjoys a special status in the general concept of man. Compared with other staple foods such as cereals, vegetables, and fruits, meat is often considered to be a more delicious and rare food, especially in ancient and modern times and even in the first half of the 20th century; and in

Going to the supermarket, you can often see the beef steak packaged on the cold fresh counter, which is not only beautiful in appearance, but also delicious in meat quality. But what about beef in these modified atmosphere packages? The fresh food retail industry can be said to be the most popular n

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